Tcl Source Code

'\"
'\" Copyright (c) 1993 The Regents of the University of California.
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
.TH Tcl_LinkVar 3 7.5 Tcl "Tcl Library Procedures"
.so man.macros
.BS
.SH NAME
Tcl_LinkArray, Tcl_LinkVar, Tcl_UnlinkVar, Tcl_UpdateLinkedVar \- link Tcl variable to C variable
.SH SYNOPSIS
.nf
\fB#include <tcl.h>\fR
.sp
int
\fBTcl_LinkVar\fR(\fIinterp, varName, addr, type\fR)
.sp
.VS "TIP 312"
int
\fBTcl_LinkArray\fR(\fIinterp, varName, addr, type, size\fR)
.VE "TIP 312"
.sp
\fBTcl_UnlinkVar\fR(\fIinterp, varName\fR)
.sp
\fBTcl_UpdateLinkedVar\fR(\fIinterp, varName\fR)
.SH ARGUMENTS
.AS Tcl_Interp varName in
.AP Tcl_Interp *interp in
Interpreter that contains \fIvarName\fR.
Also used by \fBTcl_LinkVar\fR to return error messages.
.AP "const char" *varName in
Name of global variable.
.AP void *addr in
Address of C variable that is to be linked to \fIvarName\fR.
.sp
.VS "TIP 312"
In \fBTcl_LinkArray\fR, may be NULL to tell Tcl to create the storage
for the array in the variable.
.VE "TIP 312"
.AP int type in
Type of C variable for \fBTcl_LinkVar\fR or type of array element for
\fBTcl_LinkArray\fR.  Must be one of \fBTCL_LINK_INT\fR,
\fBTCL_LINK_UINT\fR, \fBTCL_LINK_CHAR\fR, \fBTCL_LINK_UCHAR\fR,
\fBTCL_LINK_SHORT\fR, \fBTCL_LINK_USHORT\fR, \fBTCL_LINK_LONG\fR,
\fBTCL_LINK_ULONG\fR, \fBTCL_LINK_WIDE_INT\fR,
\fBTCL_LINK_WIDE_UINT\fR, \fBTCL_LINK_FLOAT\fR, \fBTCL_LINK_DOUBLE\fR,
\fBTCL_LINK_BOOLEAN\fR, or one of the extra ones listed below.
.sp
In \fBTcl_LinkVar\fR, the additional linked type \fBTCL_LINK_STRING\fR may be
used.
.sp
.VS "TIP 312"
In \fBTcl_LinkArray\fR, the additional linked types \fBTCL_LINK_CHARS\fR and
\fBTCL_LINK_BYTES\fR may be used.
.VE "TIP 312"
.sp
All the above for both functions may be
optionally OR'ed with \fBTCL_LINK_READ_ONLY\fR to make the Tcl
variable read-only.
.AP int size in
.VS "TIP 312"
The number of elements in the C array. Must be greater than zero.
.VE "TIP 312"
.BE
.SH DESCRIPTION
.PP
\fBTcl_LinkVar\fR uses variable traces to keep the Tcl variable
named by \fIvarName\fR in sync with the C variable at the address
given by \fIaddr\fR.
Whenever the Tcl variable is read the value of the C variable will
be returned, and whenever the Tcl variable is written the C
variable will be updated to have the same value.
\fBTcl_LinkVar\fR normally returns \fBTCL_OK\fR;  if an error occurs
while setting up the link (e.g. because \fIvarName\fR is the
name of array) then \fBTCL_ERROR\fR is returned and the interpreter's result
contains an error message.
.PP
.VS "TIP 312"
\fBTcl_LinkArray\fR is similar, but for arrays of fixed size (given by
the \fIsize\fR argument). When asked to allocate the backing C array
storage (via the \fIaddr\fR argument being NULL), it writes the
address that it allocated to the Tcl interpreter result.
.VE "TIP 312"
.PP
The \fItype\fR argument specifies the type of the C variable,
or the type of the elements of the C array,
and must have one of the following values, optionally OR'ed with
\fBTCL_LINK_READ_ONLY\fR:
.TP
\fBTCL_LINK_INT\fR
.
The C variable, or each element of the C array, is of type \fBint\fR.
Any value written into the Tcl variable must have a proper integer
form acceptable to \fBTcl_GetIntFromObj\fR;  attempts to write
non-integer values into \fIvarName\fR will be rejected with
Tcl errors. Incomplete integer representations (like the empty
string, '+', '-' or the hex/octal/binary prefix) are accepted
as if they are valid too.
.TP
\fBTCL_LINK_UINT\fR
.
The C variable, or each element of the C array, is of type \fBunsigned int\fR.
Any value written into the Tcl variable must have a proper unsigned
integer form acceptable to \fBTcl_GetWideIntFromObj\fR and in the
platform's defined range for the \fBunsigned int\fR type; attempts to
write non-integer values (or values outside the range) into
\fIvarName\fR will be rejected with Tcl errors. Incomplete integer
representations (like the empty string, '+', '-' or the hex/octal/binary
prefix) are accepted as if they are valid too.
.TP
\fBTCL_LINK_CHAR\fR
.
The C variable, or each element of the C array, is of type \fBchar\fR.
Any value written into the Tcl variable must have a proper integer
form acceptable to \fBTcl_GetIntFromObj\fR and be in the range of the
\fBchar\fR datatype; attempts to write non-integer or out-of-range
values into \fIvarName\fR will be rejected with Tcl errors. Incomplete
integer representations (like the empty string, '+', '-' or the
hex/octal/binary prefix) are accepted as if they are valid too.
.RS
.PP
.VS "TIP 312"
If using an array of these, consider using \fBTCL_LINK_CHARS\fR instead.
.VE "TIP 312"
.RE
.TP
\fBTCL_LINK_CHARS\fR
.VS "TIP 312"
The C array is of type \fBchar *\fR and is mapped into Tcl as a string.
Any value written into the Tcl variable must have the same length as
the underlying storage. Only supported with \fBTcl_LinkArray\fR.
.VE "TIP 312"
.TP
\fBTCL_LINK_UCHAR\fR
.
The C variable, or each element of the C array, is of type \fBunsigned char\fR.
Any value written into the Tcl variable must have a proper unsigned
integer form acceptable to \fBTcl_GetIntFromObj\fR and in the
platform's defined range for the \fBunsigned char\fR type; attempts to
write non-integer values (or values outside the range) into
\fIvarName\fR will be rejected with Tcl errors. Incomplete integer
representations (like the empty string, '+', '-' or the hex/octal/binary
prefix) are accepted as if they are valid too.
.RS
.PP
.VS "TIP 312"
If using an array of these, consider using \fBTCL_LINK_BYTES\fR instead.
.VE "TIP 312"
.RE
.TP
\fBTCL_LINK_BYTES\fR
.VS "TIP 312"
The C array is of type \fBunsigned char *\fR and is mapped into Tcl
as a bytearray.
Any value written into the Tcl variable must have the same length as
the underlying storage. Only supported with \fBTcl_LinkArray\fR.
.VE "TIP 312"
.TP
\fBTCL_LINK_SHORT\fR
.
The C variable, or each element of the C array, is of type \fBshort\fR.
Any value written into the Tcl variable must have a proper integer
form acceptable to \fBTcl_GetIntFromObj\fR and be in the range of the
\fBshort\fR datatype; attempts to write non-integer or out-of-range
values into \fIvarName\fR will be rejected with Tcl errors. Incomplete
integer representations (like the empty string, '+', '-' or the
hex/octal/binary prefix) are accepted as if they are valid too.
.TP
\fBTCL_LINK_USHORT\fR
.
The C variable, or each element of the C array, is of type \fBunsigned short\fR.
Any value written into the Tcl variable must have a proper unsigned
integer form acceptable to \fBTcl_GetIntFromObj\fR and in the
platform's defined range for the \fBunsigned short\fR type; attempts to
write non-integer values (or values outside the range) into
\fIvarName\fR will be rejected with Tcl errors. Incomplete integer
representations (like the empty string, '+', '-' or the hex/octal/binary
prefix) are accepted as if they are valid too.
.TP
\fBTCL_LINK_LONG\fR
.
The C variable, or each element of the C array, is of type \fBlong\fR.
Any value written into the Tcl variable must have a proper integer
form acceptable to \fBTcl_GetLongFromObj\fR; attempts to write
non-integer or out-of-range
values into \fIvarName\fR will be rejected with Tcl errors. Incomplete
integer representations (like the empty string, '+', '-' or the
hex/octal/binary prefix) are accepted as if they are valid too.
.TP
\fBTCL_LINK_ULONG\fR
.
The C variable, or each element of the C array, is of type \fBunsigned long\fR.
Any value written into the Tcl variable must have a proper unsigned
integer form acceptable to \fBTcl_GetWideIntFromObj\fR and in the
platform's defined range for the \fBunsigned long\fR type; attempts to
write non-integer values (or values outside the range) into
\fIvarName\fR will be rejected with Tcl errors. Incomplete integer
representations (like the empty string, '+', '-' or the hex/octal/binary
prefix) are accepted as if they are valid too.
.TP
\fBTCL_LINK_DOUBLE\fR
.
The C variable, or each element of the C array, is of type \fBdouble\fR.
Any value written into the Tcl variable must have a proper real
form acceptable to \fBTcl_GetDoubleFromObj\fR;  attempts to write
non-real values into \fIvarName\fR will be rejected with
Tcl errors. Incomplete integer or real representations (like the
empty string, '.', '+', '-' or the hex/octal/binary prefix) are
accepted as if they are valid too.
.TP
\fBTCL_LINK_FLOAT\fR
.
The C variable, or each element of the C array, is of type \fBfloat\fR.
Any value written into the Tcl variable must have a proper real
form acceptable to \fBTcl_GetDoubleFromObj\fR and must be within the
range acceptable for a \fBfloat\fR; attempts to
write non-real values (or values outside the range) into
\fIvarName\fR will be rejected with Tcl errors. Incomplete integer
or real representations (like the empty string, '.', '+', '-' or
the hex/octal/binary prefix) are accepted as if they are valid too.
.TP
\fBTCL_LINK_WIDE_INT\fR
.
The C variable, or each element of the C array, is of type \fBTcl_WideInt\fR
(which is an integer type
at least 64-bits wide on all platforms that can support it.)
Any value written into the Tcl variable must have a proper integer
form acceptable to \fBTcl_GetWideIntFromObj\fR;  attempts to write
non-integer values into \fIvarName\fR will be rejected with
Tcl errors. Incomplete integer representations (like the empty
string, '+', '-' or the hex/octal/binary prefix) are accepted
as if they are valid too.
.TP
\fBTCL_LINK_WIDE_UINT\fR
.
The C variable, or each element of the C array, is of type \fBTcl_WideUInt\fR
(which is an unsigned integer type at least 64-bits wide on all platforms that
can support it.)
Any value written into the Tcl variable must have a proper unsigned
integer form acceptable to \fBTcl_GetWideIntFromObj\fR (it will be
cast to unsigned);
.\" FIXME! Use bignums instead.
attempts to write non-integer values into \fIvarName\fR will be
rejected with Tcl errors. Incomplete integer representations (like
the empty string, '+', '-' or the hex/octal/binary prefix) are accepted
as if they are valid too.
.TP
\fBTCL_LINK_BOOLEAN\fR
.
The C variable, or each element of the C array, is of type \fBint\fR.
If its value is zero then it will read from Tcl as
.QW 0 ;
otherwise it will read from Tcl as
.QW 1 .
Whenever \fIvarName\fR is
modified, the C variable will be set to a 0 or 1 value.
Any value written into the Tcl variable must have a proper boolean
form acceptable to \fBTcl_GetBooleanFromObj\fR;  attempts to write
non-boolean values into \fIvarName\fR will be rejected with
Tcl errors.
.TP
\fBTCL_LINK_STRING\fR
.
The C variable is of type \fBchar *\fR.
If its value is not NULL then it must be a pointer to a string
allocated with \fBTcl_Alloc\fR.
Whenever the Tcl variable is modified the current C string will be
freed and new memory will be allocated to hold a copy of the variable's
new value.
If the C variable contains a NULL pointer then the Tcl variable
will read as
.QW NULL .
This is only supported by \fBTcl_LinkVar\fR.
.PP
If the \fBTCL_LINK_READ_ONLY\fR flag is present in \fItype\fR then the
variable will be read-only from Tcl, so that its value can only be
changed by modifying the C variable.
Attempts to write the variable from Tcl will be rejected with errors.
.PP
\fBTcl_UnlinkVar\fR removes the link previously set up for the

elements in a manner similar to \fBarray get\fR. That is, the first
element of each pair would be the key and the second element would be
the value for that key.
.PP
It is an error to attempt to retrieve a value for a key that is not
present in the dictionary.
.RE
.TP
\fBdict getdef \fIdictionaryValue \fR?\fIkey ...\fR? \fIkey default\fR
.TP
\fBdict getwithdefault \fIdictionaryValue \fR?\fIkey ...\fR? \fIkey default\fR
.VS "8.7, TIP342"
This behaves the same as \fBdict get\fR (with at least one \fIkey\fR
argument), returning the value that the key path maps to in the
dictionary \fIdictionaryValue\fR, except that instead of producing an
error because the \fIkey\fR (or one of the \fIkey\fRs on the key path)
is absent, it returns the \fIdefault\fR argument instead.
.RS
.PP
Note that there must always be at least one \fIkey\fR provided, and that
\fBdict getdef\fR and \fBdict getwithdefault\fR are aliases for each other.
.RE
.VE "8.7, TIP342"
.TP
\fBdict incr \fIdictionaryVariable key \fR?\fIincrement\fR?
.
This adds the given increment value (an integer that defaults to 1 if
not specified) to the value that the given key maps to in the
dictionary value contained in the given variable, writing the
resulting dictionary value back to that variable. Non-existent keys

% lindex $var 1
elements to
% \fBlrange\fR $var 1 1
{elements to}
.CE
.SH "SEE ALSO"
list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n),
lset(n), lremove(n), lreplace(n), lsort(n),
string(n)
.SH KEYWORDS
element, list, range, sublist
'\" Local Variables:
'\" mode: nroff
'\" fill-column: 78
'\" End:

'\"
'\" Copyright (c) 2019 Donal K. Fellows.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
.TH lremove n 8.7 Tcl "Tcl Built-In Commands"
.so man.macros
.BS
'\" Note:  do not modify the .SH NAME line immediately below!
.SH NAME
lremove \- Remove elements from a list by index
.SH SYNOPSIS
\fBlremove \fIlist\fR ?\fIindex ...\fR?
.BE
.SH DESCRIPTION
.PP
\fBlremove\fR returns a new list formed by simultaneously removing zero or
more elements of \fIlist\fR at each of the indices given by an arbirary number
of \fIindex\fR arguments. The indices may be in any order and may be repeated;
the element at index will only be removed once.  The index values are
interpreted the same as index values for the command \fBstring index\fR,
supporting simple index arithmetic and indices relative to the end of the
list.  0 refers to the first element of the list, and \fBend\fR refers to the
last element of the list.
.SH EXAMPLES
.PP
Removing the third element of a list:
.PP
.CS
% \fBlremove\fR {a b c d e} 2
a b d e
.CE
.PP
Removing two elements from a list:
.PP
.CS
% \fBlremove\fR {a b c d e} end-1 1
a c e
.CE
.PP
Removing the same element indicated in two different ways:
.PP
.CS
% \fBlremove\fR {a b c d e} 2 end-2
a b d e
.CE
.SH "SEE ALSO"
list(n), lrange(n), lsearch(n), lsearch(n)
.SH KEYWORDS
element, list, remove
.\" Local variables:
.\" mode: nroff
.\" fill-column: 78
.\" End:

a b c d e
% set var [\fBlreplace\fR $var 12345 end+2 f g h i]
a b c d e f g h i
.CE
.VE TIP505
.SH "SEE ALSO"
list(n), lappend(n), lindex(n), linsert(n), llength(n), lsearch(n),
lset(n), lrange(n), lremove(n), lsort(n),
string(n)
.SH KEYWORDS
element, list, replace
.\" Local variables:
.\" mode: nroff
.\" fill-column: 78
.\" End:

.SH "SERIAL COMMUNICATIONS"
.PP
If \fIfileName\fR refers to a serial port, then the specified serial port
is opened and initialized in a platform-dependent manner.  Acceptable
values for the \fIfileName\fR to use to open a serial port are described in
the PORTABILITY ISSUES section.
.PP
The \fBchan configure\fR and \fBfconfigure\fR commands can be used to query
and set additional configuration options specific to serial ports (where
supported):
.TP
\fB\-mode\fR \fIbaud\fB,\fIparity\fB,\fIdata\fB,\fIstop\fR
.
This option is a set of 4 comma-separated values: the baud rate, parity,
number of data bits, and number of stop bits for this serial port.  The
\fIbaud\fR rate is a simple integer that specifies the connection speed.
\fIParity\fR is one of the following letters: \fBn\fR, \fBo\fR, \fBe\fR,

.TP
\fB\-xchar\fR \fI{xonChar xoffChar}\fR
.
(Windows and Unix). This option is used to query or change the software
handshake characters. Normally the operating system default should be
DC1 (0x11) and DC3 (0x13) representing the ASCII standard
XON and XOFF characters.
.TP
\fB\-closemode\fR \fIcloseMode\fR
.VS "8.7, TIP 160"
(Windows and Unix). This option is used to query or change the close mode of
the serial channel, which defines how pending output in operating system
buffers is handled when the channel is closed. The following values for
\fIcloseMode\fR are supported:
.RS
.TP
\fBdefault\fR
.
indicates that a system default operation should be used; all serial channels
default to this.
.TP
\fBdiscard\fR
.
indicates that the contents of the OS buffers should be discarded.  Note that
this is \fInot recommended\fR when writing to a POSIX terminal, as it can
interact unexpectedly with handling of \fBstderr\fR.
.TP
\fBdrain\fR
.
indicates that Tcl should wait when closing the channel until all output has
been consumed. This may slow down \fBclose\fR noticeably.
.RE
.VE "8.7, TIP 160"
.TP
\fB\-inputmode\fR \fIinputMode\fR
.VS "8.7, TIP 160"
(Unix only; Windows has the equivalent option on console channels). This
option is used to query or change the input mode of the serial channel under
the assumption that it is talking to a terminal, which controls how interactive
input from users is handled. The following values for \fIinputMode\fR are
supported:
.RS
.TP
\fBnormal\fR
.
indicates that normal line-oriented input should be used, with standard
terminal editing capabilities enabled.
.TP
\fBpassword\fR
.
indicates that non-echoing input should be used, with standard terminal
editing capabilities enabled but no writing of typed characters to the
terminal (except for newlines). Some terminals may indicate this specially.
.TP
\fBraw\fR
.
indicates that all keyboard input should be given directly to Tcl with the
terminal doing no processing at all. It does not echo the keys, leaving it up
to the Tcl script to interpret what to do.
.TP
\fBreset\fR (set only)
.
indicates that the terminal should be reset to what state it was in when the
terminal was opened.
.PP
Note that setting this option (technically, anything that changes the terminal
state from its initial value \fIvia this option\fR) will cause the channel to
turn on an automatic reset of the terminal when the channel is closed.
.RE
.TP
\fB\-winsize\fR
.
(Unix only; Windows has the equivalent option on console channels). This
option is query only. It retrieves a two-element list with the the current
width and height of the terminal.
.VE "8.7, TIP 160"
.TP
\fB\-pollinterval\fR \fImsec\fR
.
(Windows only). This option is used to set the maximum time between
polling for fileevents.
This affects the time interval between checking for events throughout the Tcl
interpreter (the smallest value always wins).  Use this option only if

\fB\-lasterror\fR
.
(Windows only). This option is query only.
In case of a serial communication error, \fBread\fR or \fBputs\fR
returns a general Tcl file I/O error.
\fBfconfigure\fR \fB\-lasterror\fR can be called to get a list of error details.
See below for an explanation of the various error codes.
.SS "SERIAL PORT SIGNALS"
.PP
RS-232 is the most commonly used standard electrical interface for serial
communications. A negative voltage (-3V..-12V) define a mark (on=1) bit and
a positive voltage (+3..+12V) define a space (off=0) bit (RS-232C).  The
following signals are specified for incoming and outgoing data, status
lines and handshaking. Here we are using the terms \fIworkstation\fR for
your computer and \fImodem\fR for the external device, because some signal

.IP \fBBREAK\fR
A BREAK condition is not a hardware signal line, but a logical zero on the
TXD or RXD lines for a long period of time, usually 250 to 500
milliseconds.  Normally a receive or transmit data signal stays at the mark
(on=1) voltage until the next character is transferred. A BREAK is sometimes
used to reset the communications line or change the operating mode of
communications hardware.
.SS "ERROR CODES (Windows only)"
.PP
A lot of different errors may occur during serial read operations or during
event polling in background. The external device may have been switched
off, the data lines may be noisy, system buffers may overrun or your mode
settings may be wrong.  That is why a reliable software should always
\fBcatch\fR serial read operations.  In cases of an error Tcl returns a
general file I/O error.  Then \fBfconfigure\fR \fB\-lasterror\fR may help to

A stop-bit error has been detected by your UART.
Wrong mode settings with \fBfconfigure\fR \fB\-mode\fR or a noisy data line (RXD)
may cause this error.
.TP 10
\fBBREAK\fR
.
A BREAK condition has been detected by your UART (see above).
.SS "PORTABILITY ISSUES"
.TP
\fBWindows \fR
.
Valid values for \fIfileName\fR to open a serial port are of the form
\fBcom\fIX\fB\fR, where \fIX\fR is a number, generally from 1 to 9.
A legacy form accepted as well is \fBcom\fIX\fB:\fR. This notation only
works for serial ports from 1 to 9.  An attempt to open a serial port that

not accessing the console, or if the command pipeline does not use standard
input, but is redirected from a file, then the above problem does not occur.
.RE
.PP
See the \fBPORTABILITY ISSUES\fR section of the \fBexec\fR command for
additional information not specific to command pipelines about executing
applications on the various platforms
.SH "CONSOLE CHANNELS"
.VS "8.7, TIP 160"
On Windows only, console channels (usually \fBstdin\fR or \fBstdout\fR)
support the following options:
.TP
\fB\-inputmode\fR \fIinputMode\fR
.
This option is used to query or change the input mode of the console channel,
which controls how interactive input from users is handled. The following
values for \fIinputMode\fR are supported:
.RS
.TP
\fBnormal\fR
.
indicates that normal line-oriented input should be used, with standard
console editing capabilities enabled.
.TP
\fBpassword\fR
.
indicates that non-echoing input should be used, with standard console
editing capabilitied enabled but no writing of typed characters to the
terminal (except for newlines).
.TP
\fBraw\fR
.
indicates that all keyboard input should be given directly to Tcl with the
console doing no processing at all. It does not echo the keys, leaving it up
to the Tcl script to interpret what to do.
.TP
\fBreset\fR (set only)
.
indicates that the console should be reset to what state it was in when the
console channel was opened.
.PP
Note that setting this option (technically, anything that changes the console
state from its default \fIvia this option\fR) will cause the channel to turn
on an automatic reset of the console when the channel is closed.
.RE
.TP
\fB\-winsize\fR
.
This option is query only.
It retrieves a two-element list with the the current width and height of the
console that this channel is talking to.
.PP
Note that the equivalent options exist on Unix, but are on the serial channel
type.
.VE "8.7, TIP 160"
.SH "EXAMPLES"
.PP
Open a command pipeline and catch any errors:
.PP
.CS
set fl [\fBopen\fR "| ls this_file_does_not_exist"]
set data [read $fl]
if {[catch {close $fl} err]} {
    puts "ls command failed: $err"
}
.CE
.PP
.VS "8.7, TIP 160"
Read a password securely from the user (assuming that the script is being run
interactively):
.PP
.CS
chan configure stdin \fB-inputmode password\fR
try {
    chan puts -nonewline "Password: "
    chan flush stdout
    set thePassword [chan gets stdin]
} finally {
    chan configure stdin \fB-inputmode reset\fR
}
.CE
.VE "8.7, TIP 160"
.SH "SEE ALSO"
file(n), close(n), filename(n), fconfigure(n), gets(n), read(n),
puts(n), exec(n), pid(n), fopen(3)
.SH KEYWORDS
access mode, append, create, file, non-blocking, open, permissions,
pipeline, process, serial
'\"Local Variables:
'\"mode: nroff
'\"End:

string.  \fIcharIndex\fR may be specified as described in the
\fBSTRING INDICES\fR section.
.RS
.PP
If \fIcharIndex\fR is less than 0 or greater than or equal to the
length of the string then this command returns an empty string.
.RE
.TP
\fBstring insert \fIstring index insertString\fR
.VS "TIP 504"
Returns a copy of \fIstring\fR with \fIinsertString\fR inserted at the
\fIindex\fR'th character.  The \fIindex\fR may be specified as described in the
\fBSTRING INDICES\fR section.
.RS
.PP
If \fIindex\fR is start-relative, the first character inserted in the returned
string will be at the specified index.  If \fIindex\fR is end-relative, the last
character inserted in the returned string will be at the specified index.
.PP
If \fIindex\fR is at or before the start of \fIstring\fR (e.g., \fIindex\fR is
\fB0\fR), \fIinsertString\fR is prepended to \fIstring\fR.  If \fIindex\fR is at
or after the end of \fIstring\fR (e.g., \fIindex\fR is \fBend\fR),
\fIinsertString\fR is appended to \fIstring\fR.
.RE
.VE "TIP 504"
.TP
\fBstring is \fIclass\fR ?\fB\-strict\fR? ?\fB\-failindex \fIvarname\fR? \fIstring\fR
.
Returns 1 if \fIstring\fR is a valid member of the specified character
class, otherwise returns 0.  If \fB\-strict\fR is specified, then an
empty string returns 0, otherwise an empty string will return 1 on
any class.  If \fB\-failindex\fR is specified, then if the function

\fIpattern\fR.
.RE
.TP
\fBstring range \fIstring first last\fR
.
Returns a range of consecutive characters from \fIstring\fR, starting
with the character whose index is \fIfirst\fR and ending with the
character whose index is \fIlast\fR (using the forms described in
\fBSTRING INDICES\fR). An index of \fB0\fR refers to the first
character of the string; an index of \fBend\fR refers to last
character of the string.  \fIfirst\fR and \fIlast\fR may be specified
as for the \fBindex\fR method.  If \fIfirst\fR is less than zero then
it is treated as if it were zero, and if \fIlast\fR is greater than or
equal to the length of the string then it is treated as if it were
\fBend\fR.  If \fIfirst\fR is greater than \fIlast\fR then an empty
string is returned.
.TP
\fBstring repeat \fIstring count\fR
.
Returns a string consisting of \fIstring\fR concatenated with itself
\fIcount\fR times. If \fIcount\fR is 0, the empty string will be
returned.
.TP
\fBstring replace \fIstring first last\fR ?\fInewstring\fR?
.
Removes a range of consecutive characters from \fIstring\fR, starting
with the character whose index is \fIfirst\fR and ending with the
character whose index is \fIlast\fR (using the forms described in
\fBSTRING INDICES\fR).  An index of 0 refers to the
first character of the string.  \fIFirst\fR and \fIlast\fR may be
specified as for the \fBindex\fR method.  If \fInewstring\fR is
specified, then it is placed in the removed character range.  If
\fIfirst\fR is less than zero then it is treated as if it were zero,
and if \fIlast\fR is greater than or equal to the length of the string
then it is treated as if it were \fBend\fR.  If \fIfirst\fR is greater
than \fIlast\fR or the length of the initial string, or \fIlast\fR is

}
# Obsolete, use Tcl_FSJoinPath
declare 186 {
    char *Tcl_JoinPath(int argc, const char *const *argv,
	    Tcl_DString *resultPtr)
}
declare 187 {
    int Tcl_LinkVar(Tcl_Interp *interp, const char *varName, void *addr,
	    int type)
}

# This slot is reserved for use by the plus patch:
#  declare 188 {
#	Tcl_MainLoop
#  }

declare 642 {
    void Tcl_DecrRefCount(Tcl_Obj *objPtr)
}

declare 643 {
    int Tcl_IsShared(Tcl_Obj *objPtr)
}

# TIP#312 New Tcl_LinkArray() function
declare 644 {
    int Tcl_LinkArray(Tcl_Interp *interp, const char *varName, void *addr,
	    int type, int size)
}

# ----- BASELINE -- FOR -- 8.7.0 ----- #

##############################################################################

# Define the platform specific public Tcl interface. These functions are only
# available on the designated platform.

#define TCL_LINK_ULONG		((sizeof(long) != sizeof(int)) ? TCL_LINK_WIDE_UINT : TCL_LINK_UINT)
#else
#define TCL_LINK_LONG		11
#define TCL_LINK_ULONG		12
#endif
#define TCL_LINK_FLOAT		13
#define TCL_LINK_WIDE_UINT	14
#define TCL_LINK_CHARS		15
#define TCL_LINK_BINARY		16
#define TCL_LINK_READ_ONLY	0x80

/*
 *----------------------------------------------------------------------------
 * Forward declarations of Tcl_HashTable and related types.
 */

    ASSEM_BOOL_LVT4,		/* One Boolean, one 4-byte LVT ref. */
    ASSEM_CLOCK_READ,		/* 1-byte unsigned-integer case number, in the
				 * range 0-3 */
    ASSEM_CONCAT1,		/* 1-byte unsigned-integer operand count, must
				 * be strictly positive, consumes N, produces
				 * 1 */
    ASSEM_DICT_GET,		/* 'dict get' and related - consumes N+1
				 * operands, produces 1, N > 0 */
    ASSEM_DICT_GET_DEF,		/* 'dict getwithdefault' - consumes N+2
				 * operands, produces 1, N > 0 */
    ASSEM_DICT_SET,		/* specifies key count and LVT index, consumes
				 * N+1 operands, produces 1, N > 0 */
    ASSEM_DICT_UNSET,		/* specifies key count and LVT index, consumes
				 * N operands, produces 1, N > 0 */
    ASSEM_END_CATCH,		/* End catch. No args. Exception range popped
				 * from stack and stack pointer restored. */

    {"concatStk",	ASSEM_LIST,	INST_CONCAT_STK,	INT_MIN,1},
    {"coroName",	ASSEM_1BYTE,	INST_COROUTINE_NAME,	0,	1},
    {"currentNamespace",ASSEM_1BYTE,	INST_NS_CURRENT,	0,	1},
    {"dictAppend",	ASSEM_LVT4,	INST_DICT_APPEND,	2,	1},
    {"dictExists",	ASSEM_DICT_GET, INST_DICT_EXISTS,	INT_MIN,1},
    {"dictExpand",	ASSEM_1BYTE,	INST_DICT_EXPAND,	3,	1},
    {"dictGet",		ASSEM_DICT_GET, INST_DICT_GET,		INT_MIN,1},
    {"dictGetDef",	ASSEM_DICT_GET_DEF, INST_DICT_GET_DEF,	INT_MIN,1},
    {"dictIncrImm",	ASSEM_SINT4_LVT4,
					INST_DICT_INCR_IMM,	1,	1},
    {"dictLappend",	ASSEM_LVT4,	INST_DICT_LAPPEND,	2,	1},
    {"dictRecombineStk",ASSEM_1BYTE,	INST_DICT_RECOMBINE_STK,3,	0},
    {"dictRecombineImm",ASSEM_LVT4,	INST_DICT_RECOMBINE_IMM,2,	0},
    {"dictSet",		ASSEM_DICT_SET, INST_DICT_SET,		INT_MIN,1},
    {"dictUnset",	ASSEM_DICT_UNSET,

    int count)			/* Count of operands for variadic insts */
{
    int consumed = TalInstructionTable[tblIdx].operandsConsumed;
    int produced = TalInstructionTable[tblIdx].operandsProduced;

    if (consumed == INT_MIN) {
	/*
	 * The instruction is variadic; it consumes 'count' operands, or
	 * 'count+1' for ASSEM_DICT_GET_DEF.
	 */

	consumed = count;
	if (TalInstructionTable[tblIdx].instType == ASSEM_DICT_GET_DEF) {
	    consumed++;
	}
    }
    if (produced < 0) {
	/*
	 * The instruction leaves some of its variadic operands on the stack,
	 * with net stack effect of '-1-produced'
	 */

		|| CheckStrictlyPositive(interp, opnd) != TCL_OK) {
	    goto cleanup;
	}
	BBEmitInstInt1(assemEnvPtr, tblIdx, opnd, opnd);
	break;

    case ASSEM_DICT_GET:
    case ASSEM_DICT_GET_DEF:
	if (parsePtr->numWords != 2) {
	    Tcl_WrongNumArgs(interp, 1, &instNameObj, "count");
	    goto cleanup;
	}
	if (GetIntegerOperand(assemEnvPtr, &tokenPtr, &opnd) != TCL_OK
		|| CheckStrictlyPositive(interp, opnd) != TCL_OK) {
	    goto cleanup;

    {"lindex",		Tcl_LindexObjCmd,	TclCompileLindexCmd,	NULL,	CMD_IS_SAFE},
    {"linsert",		Tcl_LinsertObjCmd,	TclCompileLinsertCmd,	NULL,	CMD_IS_SAFE},
    {"list",		Tcl_ListObjCmd,		TclCompileListCmd,	NULL,	CMD_IS_SAFE|CMD_COMPILES_EXPANDED},
    {"llength",		Tcl_LlengthObjCmd,	TclCompileLlengthCmd,	NULL,	CMD_IS_SAFE},
    {"lmap",		Tcl_LmapObjCmd,		TclCompileLmapCmd,	TclNRLmapCmd,	CMD_IS_SAFE},
    {"lpop",		Tcl_LpopObjCmd,		NULL,			NULL,	CMD_IS_SAFE},
    {"lrange",		Tcl_LrangeObjCmd,	TclCompileLrangeCmd,	NULL,	CMD_IS_SAFE},
    {"lremove", 	Tcl_LremoveObjCmd,	NULL,           	NULL,	CMD_IS_SAFE},
    {"lrepeat",		Tcl_LrepeatObjCmd,	NULL,			NULL,	CMD_IS_SAFE},
    {"lreplace",	Tcl_LreplaceObjCmd,	TclCompileLreplaceCmd,	NULL,	CMD_IS_SAFE},
    {"lreverse",	Tcl_LreverseObjCmd,	NULL,			NULL,	CMD_IS_SAFE},
    {"lsearch",		Tcl_LsearchObjCmd,	NULL,			NULL,	CMD_IS_SAFE},
    {"lset",		Tcl_LsetObjCmd,		TclCompileLsetCmd,	NULL,	CMD_IS_SAFE},
    {"lsort",		Tcl_LsortObjCmd,	NULL,			NULL,	CMD_IS_SAFE},
    {"package",		Tcl_PackageObjCmd,	NULL,			TclNRPackageObjCmd,	CMD_IS_SAFE},

    Interp *iPtr = (Interp *) interp;
    Tcl_Obj *listPtr;
    const char *cmdString;
    size_t cmdLen;
    int objc = PTR2INT(data[0]);
    Tcl_Obj **objv = data[1];

    if ((result == TCL_ERROR) && !(iPtr->flags & ERR_ALREADY_LOGGED)) {
	/*
	 * If there was an error, a command string will be needed for the
	 * error log: get it out of the itemPtr. The details depend on the
	 * type.
	 */

	listPtr = Tcl_NewListObj(objc, objv);

    Tcl_Obj *commandPtr = data[1];
    Command *cmdPtr = data[2];
    Tcl_Obj **objv = data[3];
    size_t length;
    const char *command = TclGetStringFromObj(commandPtr, &length);

    if (!(cmdPtr->flags & CMD_IS_DELETED)) {
	if (cmdPtr->flags & CMD_HAS_EXEC_TRACES) {
	    traceCode = TclCheckExecutionTraces(interp, command, length,
		    cmdPtr, result, TCL_TRACE_LEAVE_EXEC, objc, objv);
	}
	if (iPtr->tracePtr != NULL && traceCode == TCL_OK) {
	    traceCode = TclCheckInterpTraces(interp, command, length,
		    cmdPtr, result, TCL_TRACE_LEAVE_EXEC, objc, objv);
	}

    Tcl_SetObjResult(interp, TclListObjRange(objv[1], first, last));
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_LremoveObjCmd --
 *
 *	This procedure is invoked to process the "lremove" Tcl command. See the
 *	user documentation for details on what it does.
 *
 * Results:
 *	A standard Tcl object result.
 *
 * Side effects:
 *	See the user documentation.
 *
 *----------------------------------------------------------------------
 */

typedef int list_index_t;

static int
LremoveIndexCompare(
    const void *el1Ptr,
    const void *el2Ptr)
{
    list_index_t idx1 = *((const list_index_t *) el1Ptr);
    list_index_t idx2 = *((const list_index_t *) el2Ptr);

    /*
     * This will put the larger element first.
     */

    return (idx1 < idx2) ? 1 : (idx1 > idx2) ? -1 : 0;
}

int
Tcl_LremoveObjCmd(
    ClientData notUsed,		/* Not used. */
    Tcl_Interp *interp,		/* Current interpreter. */
    int objc,			/* Number of arguments. */
    Tcl_Obj *const objv[])	/* Argument objects. */
{
    int i, idxc;
    list_index_t listLen, *idxv, prevIdx, first, num;
    Tcl_Obj *listObj;

    /*
     * Parse the arguments.
     */

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "list ?index ...?");
	return TCL_ERROR;
    }

    listObj = objv[1];
    if (TclListObjLength(interp, listObj, &listLen) != TCL_OK) {
	return TCL_ERROR;
    }

    idxc = objc - 2;
    if (idxc == 0) {
	Tcl_SetObjResult(interp, listObj);
	return TCL_OK;
    }
    idxv = Tcl_Alloc((objc - 2) * sizeof(list_index_t));
    for (i = 2; i < objc; i++) {
	if (TclGetIntForIndexM(interp, objv[i], /*endValue*/ listLen - 1,
		&idxv[i - 2]) != TCL_OK) {
	    Tcl_Free(idxv);
	    return TCL_ERROR;
	}
    }

    /*
     * Sort the indices, large to small so that when we remove an index we
     * don't change the indices still to be processed.
     */

    if (idxc > 1) {
	qsort(idxv, idxc, sizeof(list_index_t), LremoveIndexCompare);
    }

    /*
     * Make our working copy, then do the actual removes piecemeal.
     */

    if (Tcl_IsShared(listObj)) {
	listObj = TclListObjCopy(NULL, listObj);
    }
    num = 0;
    first = listLen;
    for (i = 0, prevIdx = -1 ; i < idxc ; i++) {
	list_index_t idx = idxv[i];

	/*
	 * Repeated index and sanity check.
	 */

	if (idx == prevIdx) {
	    continue;
	}
	prevIdx = idx;
	if (idx < 0 || idx >= listLen) {
	    continue;
	}

	/*
	 * Coalesce adjacent removes to reduce the number of copies.
	 */

	if (num == 0) {
	    num = 1;
	    first = idx;
	} else if (idx + 1 == first) {
	    num++;
	    first = idx;
	} else {
	    /*
	     * Note that this operation can't fail now; we know we have a list
	     * and we're only ever contracting that list.
	     */

	    (void) Tcl_ListObjReplace(interp, listObj, first, num, 0, NULL);
	    listLen -= num;
	    num = 1;
	    first = idx;
	}
    }
    if (num != 0) {
	(void) Tcl_ListObjReplace(interp, listObj, first, num, 0, NULL);
    }
    Tcl_Free(idxv);
    Tcl_SetObjResult(interp, listObj);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_LrepeatObjCmd --
 *
 *	This procedure is invoked to process the "lrepeat" Tcl command. See
 *	the user documentation for details on what it does.
 *
 * Results:
 *	A standard Tcl object result.

    /*
     * The following loop creates a SortElement for each list element and
     * begins sorting it into the sublists as it appears.
     */

    elementArray = Tcl_Alloc(length * sizeof(SortElement));

    for (i=0; i < length; i++) {
	idx = groupSize * i + groupOffset;
	if (indexc) {
	    /*
	     * If this is an indexed sort, retrieve the corresponding element
	     */
	    indexPtr = SelectObjFromSublist(listObjPtrs[idx], &sortInfo);
	    if (sortInfo.resultCode != TCL_OK) {

    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * StringInsertCmd --
 *
 *	This procedure is invoked to process the "string insert" Tcl command.
 *	See the user documentation for details on what it does. Note that this
 *	command only functions correctly on properly formed Tcl UTF strings.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
StringInsertCmd(
    ClientData dummy,		/* Not used */
    Tcl_Interp *interp,		/* Current interpreter */
    int objc,			/* Number of arguments */
    Tcl_Obj *const objv[])	/* Argument objects */
{
    int length;			/* String length */
    int index;			/* Insert index */
    Tcl_Obj *outObj;		/* Output object */

    if (objc != 4) {
	Tcl_WrongNumArgs(interp, 1, objv, "string index insertString");
	return TCL_ERROR;
    }

    length = Tcl_GetCharLength(objv[1]);
    if (TclGetIntForIndexM(interp, objv[2], length, &index) != TCL_OK) {
	return TCL_ERROR;
    }

    if (index < 0) {
	index = 0;
    }
    if (index > length) {
	index = length;
    }

    outObj = TclStringReplace(interp, objv[1], index, 0, objv[3],
	    TCL_STRING_IN_PLACE);

    if (outObj != NULL) {
	Tcl_SetObjResult(interp, outObj);
	return TCL_OK;
    }

    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * StringIsCmd --
 *
 *	This procedure is invoked to process the "string is" Tcl command. See
 *	the user documentation for details on what it does. Note that this
 *	command only functions correctly on properly formed Tcl UTF strings.
 *
 * Results:

    /*
     * This test is tricky, but has to be that way or you get other strange
     * inconsistencies (see test string-10.20.1 for illustration why!)
     */

    if (!TclHasStringRep(objv[objc-2])
	    && TclHasIntRep(objv[objc-2], &tclDictType)) {
	int i, done;
	Tcl_DictSearch search;

	/*
	 * We know the type exactly, so all dict operations will succeed for
	 * sure. This shortens this code quite a bit.
	 */

	Tcl_WrongNumArgs(interp, 1, objv, "string first last ?string?");
	return TCL_ERROR;
    }

    end = Tcl_GetCharLength(objv[1]) - 1;

    if (TclGetIntForIndexM(interp, objv[2], end, &first) != TCL_OK ||
	    TclGetIntForIndexM(interp, objv[3], end, &last) != TCL_OK) {
	return TCL_ERROR;
    }

    /*
     * The following test screens out most empty substrings as candidates for
     * replacement. When they are detected, no replacement is done, and the
     * result is the original string.
     */

    if ((last == TCL_INDEX_NONE) ||	/* Range ends before start of string */
	    (first + 1 > end + 1) ||	/* Range begins after end of string */
	    (last + 1 < first + 1)) {	/* Range begins after it starts */

	/*
	 * BUT!!! when (end < 0) -- an empty original string -- we can
	 * have (first <= end < 0 <= last) and an empty string is permitted
	 * to be replaced.
	 */

	Tcl_SetObjResult(interp, objv[1]);
    } else {
	Tcl_Obj *resultPtr;

	if (first == TCL_INDEX_NONE) {
	    first = TCL_INDEX_START;
	}

    static const EnsembleImplMap stringImplMap[] = {
	{"bytelength",	StringBytesCmd,	TclCompileBasic1ArgCmd, NULL, NULL, 0},
	{"cat",		StringCatCmd,	TclCompileStringCatCmd, NULL, NULL, 0},
	{"compare",	StringCmpCmd,	TclCompileStringCmpCmd, NULL, NULL, 0},
	{"equal",	StringEqualCmd,	TclCompileStringEqualCmd, NULL, NULL, 0},
	{"first",	StringFirstCmd,	TclCompileStringFirstCmd, NULL, NULL, 0},
	{"index",	StringIndexCmd,	TclCompileStringIndexCmd, NULL, NULL, 0},
	{"insert",	StringInsertCmd, TclCompileStringInsertCmd, NULL, NULL, 0},
	{"is",		StringIsCmd,	TclCompileStringIsCmd, NULL, NULL, 0},
	{"last",	StringLastCmd,	TclCompileStringLastCmd, NULL, NULL, 0},
	{"length",	StringLenCmd,	TclCompileStringLenCmd, NULL, NULL, 0},
	{"map",		StringMapCmd,	TclCompileStringMapCmd, NULL, NULL, 0},
	{"match",	StringMatchCmd,	TclCompileStringMatchCmd, NULL, NULL, 0},
	{"range",	StringRangeCmd,	TclCompileStringRangeCmd, NULL, NULL, 0},
	{"repeat",	StringReptCmd,	TclCompileBasic2ArgCmd, NULL, NULL, 0},

     */

    splitObjs = 0;
    if (objc == 1) {
	Tcl_Obj **listv;

	blist = objv[0];
	if (TclListObjGetElements(interp, objv[0], &objc, &listv) != TCL_OK) {
	    return TCL_ERROR;
	}

	/*
	 * Ensure that the list is non-empty.
	 */

	CompileWord(envPtr, tokenPtr, interp, i);
	tokenPtr = TokenAfter(tokenPtr);
    }
    TclEmitInstInt4(INST_DICT_GET, parsePtr->numWords-2, envPtr);
    TclAdjustStackDepth(-1, envPtr);
    return TCL_OK;
}

int
TclCompileDictGetWithDefaultCmd(
    Tcl_Interp *interp,		/* Used for looking up stuff. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *tokenPtr;
    int i;
    DefineLineInformation;	/* TIP #280 */

    /*
     * There must be at least three arguments after the command.
     */

    /* TODO: Consider support for compiling expanded args. */
    if (parsePtr->numWords < 4) {
	return TCL_ERROR;
    }
    tokenPtr = TokenAfter(parsePtr->tokenPtr);

    for (i=1 ; i<parsePtr->numWords ; i++) {
	CompileWord(envPtr, tokenPtr, interp, i);
	tokenPtr = TokenAfter(tokenPtr);
    }
    TclEmitInstInt4(INST_DICT_GET_DEF, parsePtr->numWords-3, envPtr);
    TclAdjustStackDepth(-2, envPtr);
    return TCL_OK;
}

int
TclCompileDictExistsCmd(
    Tcl_Interp *interp,		/* Used for looking up stuff. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being

     */

    tokenPtr = TokenAfter(parsePtr->tokenPtr);
    CompileWord(envPtr, tokenPtr, interp, 1);
    tokenPtr = TokenAfter(tokenPtr);
    CompileWord(envPtr, tokenPtr, interp, 2);
    TclEmitOpcode(INST_STR_INDEX, envPtr);
    return TCL_OK;
}

int
TclCompileStringInsertCmd(
    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command
				 * created by Tcl_ParseCommand. */
    Command *cmdPtr,		/* Points to defintion of command being
				 * compiled. */
    CompileEnv *envPtr)		/* Holds resulting instructions. */
{
    Tcl_Token *tokenPtr;
    DefineLineInformation;	/* TIP #280 */
    int idx;

    if (parsePtr->numWords != 4) {
	return TCL_ERROR;
    }

    /* Compute and push the string in which to insert */
    tokenPtr = TokenAfter(parsePtr->tokenPtr);
    CompileWord(envPtr, tokenPtr, interp, 1);

    /* See what can be discovered about index at compile time */
    tokenPtr = TokenAfter(tokenPtr);
    if (TCL_OK != TclGetIndexFromToken(tokenPtr, TCL_INDEX_START,
	    TCL_INDEX_END, &idx)) {

	/* Nothing useful knowable - cease compile; let it direct eval */
	return TCL_OK;
    }

    /* Compute and push the string to be inserted */
    tokenPtr = TokenAfter(tokenPtr);
    CompileWord(envPtr, tokenPtr, interp, 3);

    if (idx == TCL_INDEX_START) {
	/* Prepend the insertion string */
	OP4(	REVERSE, 2);
	OP1(	STR_CONCAT1, 2);
    } else  if (idx == TCL_INDEX_END) {
	/* Append the insertion string */
	OP1(	STR_CONCAT1, 2);
    } else {
	/* Prefix + insertion + suffix */
	if (idx < TCL_INDEX_END) {
	    /* See comments in compiler for [linsert]. */
	    idx++;
	}
	OP4(	OVER, 1);
	OP44(	STR_RANGE_IMM, 0, idx-1);
	OP4(	REVERSE, 3);
	OP44(	STR_RANGE_IMM, idx, TCL_INDEX_END);
	OP1(	STR_CONCAT1, 3);
    }

    return TCL_OK;
}

int
TclCompileStringIsCmd(
    Tcl_Interp *interp,		/* Used for error reporting. */
    Tcl_Parse *parsePtr,	/* Points to a parse structure for the command

	 * Stack:  ... varName list => ... listVarContents */

    {"clockRead",	 2,	+1,	1,	{OPERAND_UINT1}},
        /* Read clock out to the stack. Operand is which clock to read
	 * 0=clicks, 1=microseconds, 2=milliseconds, 3=seconds.
	 * Stack: ... => ... time */

    {"dictGetDef",	  5,	INT_MIN,   1,	{OPERAND_UINT4}},
	/* The top word is the default, the next op4 words (min 1) are a key
	 * path into the dictionary just below the keys on the stack, and all
	 * those values are replaced by the value read out of that key-path
	 * (like [dict get]) except if there is no such key, when instead the
	 * default is pushed instead.
	 * Stack:  ... dict key1 ... keyN default => ... value */

    {NULL, 0, 0, 0, {OPERAND_NONE}}
};

/*
 * Prototypes for procedures defined later in this file:
 */

 * entries in the table of instruction descriptions, tclInstructionTable, in
 * tclCompile.c. Also, the order and number of the expression opcodes (e.g.,
 * INST_BITOR) must match the entries in the array operatorStrings in
 * tclExecute.c.
 */

enum TclInstruction {

    /* Opcodes 0 to 9 */
    INST_DONE = 0,
    INST_PUSH1,
    INST_PUSH4,
    INST_POP,
    INST_DUP,
    INST_STR_CONCAT1,

    INST_LAPPEND_LIST,
    INST_LAPPEND_LIST_ARRAY,
    INST_LAPPEND_LIST_ARRAY_STK,
    INST_LAPPEND_LIST_STK,

    INST_CLOCK_READ,

    INST_DICT_GET_DEF,

    /* The last opcode */
    LAST_INST_OPCODE
};


/*
 * Table describing the Tcl bytecode instructions: their name (for displaying
 * code), total number of code bytes required (including operand bytes), and a
 * description of the type of each operand. These operand types include signed
 * and unsigned integers of length one and four bytes. The unsigned integers
 * are used for indexes or for, e.g., the count of objects to push in a "push"

/* 185 */
EXTERN int		Tcl_IsSafe(Tcl_Interp *interp);
/* 186 */
EXTERN char *		Tcl_JoinPath(int argc, const char *const *argv,
				Tcl_DString *resultPtr);
/* 187 */
EXTERN int		Tcl_LinkVar(Tcl_Interp *interp, const char *varName,
				void *addr, int type);
/* Slot 188 is reserved */
/* 189 */
EXTERN Tcl_Channel	Tcl_MakeFileChannel(void *handle, int mode);
/* 190 */
EXTERN int		Tcl_MakeSafe(Tcl_Interp *interp);
/* 191 */
EXTERN Tcl_Channel	Tcl_MakeTcpClientChannel(void *tcpSocket);

EXTERN int		Tcl_HasStringRep(Tcl_Obj *objPtr);
/* 641 */
EXTERN void		Tcl_IncrRefCount(Tcl_Obj *objPtr);
/* 642 */
EXTERN void		Tcl_DecrRefCount(Tcl_Obj *objPtr);
/* 643 */
EXTERN int		Tcl_IsShared(Tcl_Obj *objPtr);
/* 644 */
EXTERN int		Tcl_LinkArray(Tcl_Interp *interp,
				const char *varName, void *addr, int type,
				int size);

typedef struct {
    const struct TclPlatStubs *tclPlatStubs;
    const struct TclIntStubs *tclIntStubs;
    const struct TclIntPlatStubs *tclIntPlatStubs;
} TclStubHooks;

    int (*tcl_Init) (Tcl_Interp *interp); /* 180 */
    void (*tcl_InitHashTable) (Tcl_HashTable *tablePtr, int keyType); /* 181 */
    int (*tcl_InputBlocked) (Tcl_Channel chan); /* 182 */
    int (*tcl_InputBuffered) (Tcl_Channel chan); /* 183 */
    int (*tcl_InterpDeleted) (Tcl_Interp *interp); /* 184 */
    int (*tcl_IsSafe) (Tcl_Interp *interp); /* 185 */
    char * (*tcl_JoinPath) (int argc, const char *const *argv, Tcl_DString *resultPtr); /* 186 */
    int (*tcl_LinkVar) (Tcl_Interp *interp, const char *varName, void *addr, int type); /* 187 */
    void (*reserved188)(void);
    Tcl_Channel (*tcl_MakeFileChannel) (void *handle, int mode); /* 189 */
    int (*tcl_MakeSafe) (Tcl_Interp *interp); /* 190 */
    Tcl_Channel (*tcl_MakeTcpClientChannel) (void *tcpSocket); /* 191 */
    char * (*tcl_Merge) (int argc, const char *const *argv); /* 192 */
    Tcl_HashEntry * (*tcl_NextHashEntry) (Tcl_HashSearch *searchPtr); /* 193 */
    void (*tcl_NotifyChannel) (Tcl_Channel channel, int mask); /* 194 */

    char * (*tcl_InitStringRep) (Tcl_Obj *objPtr, const char *bytes, size_t numBytes); /* 637 */
    Tcl_ObjIntRep * (*tcl_FetchIntRep) (Tcl_Obj *objPtr, const Tcl_ObjType *typePtr); /* 638 */
    void (*tcl_StoreIntRep) (Tcl_Obj *objPtr, const Tcl_ObjType *typePtr, const Tcl_ObjIntRep *irPtr); /* 639 */
    int (*tcl_HasStringRep) (Tcl_Obj *objPtr); /* 640 */
    void (*tcl_IncrRefCount) (Tcl_Obj *objPtr); /* 641 */
    void (*tcl_DecrRefCount) (Tcl_Obj *objPtr); /* 642 */
    int (*tcl_IsShared) (Tcl_Obj *objPtr); /* 643 */
    int (*tcl_LinkArray) (Tcl_Interp *interp, const char *varName, void *addr, int type, int size); /* 644 */
} TclStubs;

extern const TclStubs *tclStubsPtr;

#ifdef __cplusplus
}
#endif

	(tclStubsPtr->tcl_HasStringRep) /* 640 */
#define Tcl_IncrRefCount \
	(tclStubsPtr->tcl_IncrRefCount) /* 641 */
#define Tcl_DecrRefCount \
	(tclStubsPtr->tcl_DecrRefCount) /* 642 */
#define Tcl_IsShared \
	(tclStubsPtr->tcl_IsShared) /* 643 */
#define Tcl_LinkArray \
	(tclStubsPtr->tcl_LinkArray) /* 644 */

#endif /* defined(USE_TCL_STUBS) */

/* !END!: Do not edit above this line. */

#if defined(USE_TCL_STUBS)
#   undef Tcl_CreateInterp

			    int objc, Tcl_Obj *const *objv);
static int		DictExistsCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		DictFilterCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		DictGetCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		DictGetDefCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		DictIncrCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		DictInfoCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		DictKeysCmd(ClientData dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		DictLappendCmd(ClientData dummy, Tcl_Interp *interp,

static const EnsembleImplMap implementationMap[] = {
    {"append",	DictAppendCmd,	TclCompileDictAppendCmd, NULL, NULL, 0 },
    {"create",	DictCreateCmd,	TclCompileDictCreateCmd, NULL, NULL, 0 },
    {"exists",	DictExistsCmd,	TclCompileDictExistsCmd, NULL, NULL, 0 },
    {"filter",	DictFilterCmd,	NULL, NULL, NULL, 0 },
    {"for",	NULL,		TclCompileDictForCmd, DictForNRCmd, NULL, 0 },
    {"get",	DictGetCmd,	TclCompileDictGetCmd, NULL, NULL, 0 },
    {"getdef",	DictGetDefCmd,	TclCompileDictGetWithDefaultCmd, NULL,NULL,0},
    {"getwithdefault",	DictGetDefCmd,	TclCompileDictGetWithDefaultCmd,
	NULL, NULL, 0 },
    {"incr",	DictIncrCmd,	TclCompileDictIncrCmd, NULL, NULL, 0 },
    {"info",	DictInfoCmd,	TclCompileBasic1ArgCmd, NULL, NULL, 0 },
    {"keys",	DictKeysCmd,	TclCompileBasic1Or2ArgCmd, NULL, NULL, 0 },
    {"lappend",	DictLappendCmd,	TclCompileDictLappendCmd, NULL, NULL, 0 },
    {"map", 	NULL,       	TclCompileDictMapCmd, DictMapNRCmd, NULL, 0 },
    {"merge",	DictMergeCmd,	TclCompileDictMergeCmd, NULL, NULL, 0 },
    {"remove",	DictRemoveCmd,	TclCompileBasicMin1ArgCmd, NULL, NULL, 0 },

    Tcl_SetObjResult(interp, valuePtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * DictGetDefCmd --
 *
 *	This function implements the "dict getdef" and "dict getwithdefault"
 *	Tcl commands. See the user documentation for details on what it does,
 *	and TIP#342 for the formal specification.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
DictGetDefCmd(
    ClientData dummy,
    Tcl_Interp *interp,
    int objc,
    Tcl_Obj *const *objv)
{
    Tcl_Obj *dictPtr, *keyPtr, *valuePtr, *defaultPtr;
    Tcl_Obj *const *keyPath;
    int numKeys;

    if (objc < 4) {
	Tcl_WrongNumArgs(interp, 1, objv, "dictionary ?key ...? key default");
	return TCL_ERROR;
    }

    /*
     * Give the bits of arguments names for clarity.
     */

    dictPtr = objv[1];
    keyPath = &objv[2];
    numKeys = objc - 4;		/* Number of keys in keyPath; there's always
				 * one extra key afterwards too. */
    keyPtr = objv[objc - 2];
    defaultPtr = objv[objc - 1];

    /*
     * Implement the getting-with-default operation.
     */

    dictPtr = TclTraceDictPath(interp, dictPtr, numKeys, keyPath,
	    DICT_PATH_EXISTS);
    if (dictPtr == NULL) {
	return TCL_ERROR;
    } else if (dictPtr == DICT_PATH_NON_EXISTENT) {
	Tcl_SetObjResult(interp, defaultPtr);
    } else if (Tcl_DictObjGet(interp, dictPtr, keyPtr, &valuePtr) != TCL_OK) {
	return TCL_ERROR;
    } else if (valuePtr == NULL) {
	Tcl_SetObjResult(interp, defaultPtr);
    } else {
	Tcl_SetObjResult(interp, valuePtr);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * DictReplaceCmd --
 *
 *	This function implements the "dict replace" Tcl command. See the user
 *	documentation for details on what it does, and TIP#111 for the formal
 *	specification.
 *
 * Results:

    Tcl_Obj *dictPtr, *valuePtr;

    if (objc < 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "dictionary key ?key ...?");
	return TCL_ERROR;
    }

    dictPtr = TclTraceDictPath(NULL, objv[1], objc-3, objv+2,DICT_PATH_EXISTS);

    if (dictPtr == NULL || dictPtr == DICT_PATH_NON_EXISTENT ||

	    Tcl_DictObjGet(NULL, dictPtr, objv[objc-1], &valuePtr) != TCL_OK) {
	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
    } else {
	Tcl_SetObjResult(interp, Tcl_NewBooleanObj(valuePtr != NULL));
    }
    return TCL_OK;
}


	    TRACE_APPEND(("ERROR verifying dictionary nature of \"%.30s\": %s\n",
		    O2S(dictPtr), O2S(Tcl_GetObjResult(interp))));
	    goto gotError;
	}
	TRACE_APPEND(("OK\n"));
	NEXT_INST_F(1, 1, 0);


    case INST_DICT_EXISTS: {

	int found;

	opnd = TclGetUInt4AtPtr(pc+1);
	TRACE(("%u => ", opnd));
	dictPtr = OBJ_AT_DEPTH(opnd);



	if (opnd > 1) {
	    dictPtr = TclTraceDictPath(NULL, dictPtr, opnd-1,
		    &OBJ_AT_DEPTH(opnd-1), DICT_PATH_EXISTS);
	    if (dictPtr == NULL || dictPtr == DICT_PATH_NON_EXISTENT) {

		found = 0;
		goto afterDictExists;
	    }





	}

	if (Tcl_DictObjGet(NULL, dictPtr, OBJ_AT_TOS,
		&objResultPtr) == TCL_OK) {

	    found = (objResultPtr ? 1 : 0);



















	} else {
	    found = 0;
	}
    afterDictExists:
	TRACE_APPEND(("%d\n", found));

	/*
	 * The INST_DICT_EXISTS instruction is usually followed by a
	 * conditional jump, so we can take advantage of this to do some
	 * peephole optimization (note that we're careful to not close out
	 * someone doing something else).
	 */

	JUMP_PEEPHOLE_V(found, 5, opnd+1);
    }
    case INST_DICT_GET:
	opnd = TclGetUInt4AtPtr(pc+1);
	TRACE(("%u => ", opnd));
	dictPtr = OBJ_AT_DEPTH(opnd);
	if (opnd > 1) {
	    dictPtr = TclTraceDictPath(interp, dictPtr, opnd-1,
		    &OBJ_AT_DEPTH(opnd-1), DICT_PATH_READ);
	    if (dictPtr == NULL) {
		TRACE_WITH_OBJ((
			"ERROR tracing dictionary path into \"%.30s\": ",
			O2S(OBJ_AT_DEPTH(opnd))),
			Tcl_GetObjResult(interp));
		goto gotError;
	    }
	}
	if (Tcl_DictObjGet(interp, dictPtr, OBJ_AT_TOS,
		&objResultPtr) != TCL_OK) {
	    TRACE_APPEND(("ERROR reading leaf dictionary key \"%.30s\": %s",
		    O2S(dictPtr), O2S(Tcl_GetObjResult(interp))));
	    goto gotError;
	}
	if (!objResultPtr) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "key \"%s\" not known in dictionary",
		    TclGetString(OBJ_AT_TOS)));
	    DECACHE_STACK_INFO();
	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "DICT",
		    TclGetString(OBJ_AT_TOS), NULL);
	    CACHE_STACK_INFO();
	    TRACE_ERROR(interp);
	    goto gotError;
	}
	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
	NEXT_INST_V(5, opnd+1, 1);
    case INST_DICT_GET_DEF:
	opnd = TclGetUInt4AtPtr(pc+1);
	TRACE(("%u => ", opnd));
	dictPtr = OBJ_AT_DEPTH(opnd+1);
	if (opnd > 1) {
	    dictPtr = TclTraceDictPath(interp, dictPtr, opnd-1,
		    &OBJ_AT_DEPTH(opnd), DICT_PATH_EXISTS);
	    if (dictPtr == NULL) {
		TRACE_WITH_OBJ((
			"ERROR tracing dictionary path into \"%.30s\": ",
			O2S(OBJ_AT_DEPTH(opnd+1))),
			Tcl_GetObjResult(interp));
		goto gotError;
	    } else if (dictPtr == DICT_PATH_NON_EXISTENT) {
		goto dictGetDefUseDefault;
	    }
	}
	if (Tcl_DictObjGet(interp, dictPtr, OBJ_UNDER_TOS,
		&objResultPtr) != TCL_OK) {
	    TRACE_APPEND(("ERROR reading leaf dictionary key \"%.30s\": %s",
		    O2S(dictPtr), O2S(Tcl_GetObjResult(interp))));
	    goto gotError;
	} else if (!objResultPtr) {
	dictGetDefUseDefault:
	    objResultPtr = OBJ_AT_TOS;
	}
	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
	NEXT_INST_V(5, opnd+2, 1);

    case INST_DICT_SET:
    case INST_DICT_UNSET:
    case INST_DICT_INCR_IMM:
	opnd = TclGetUInt4AtPtr(pc+1);
	opnd2 = TclGetUInt4AtPtr(pc+5);

	if (w1 == -2) {
	    int signum = oddExponent ? -1 : 1;

	    /*
	     * Reduce small powers of 2 to shifts.
	     */

	    if ((Tcl_WideUInt) w2 < CHAR_BIT * sizeof(Tcl_WideInt) - 1) {
		WIDE_RESULT(signum * (((Tcl_WideInt) 1) << (int) w2));
	    }
	    goto overflowExpon;
	}
	if (w2 - 2 < (long)MaxBase64Size
		&& w1 <=  MaxBase64[w2 - 2]
		&& w1 >= -MaxBase64[w2 - 2]) {

			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
MODULE_SCOPE int	Tcl_LpopObjCmd(void *clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
MODULE_SCOPE int	Tcl_LrangeObjCmd(void *clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
MODULE_SCOPE int	Tcl_LremoveObjCmd(void *clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
MODULE_SCOPE int	Tcl_LrepeatObjCmd(void *clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
MODULE_SCOPE int	Tcl_LreplaceObjCmd(void *clientData,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);

			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileDictForCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileDictGetCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileDictGetWithDefaultCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileDictIncrCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileDictLappendCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);

			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileStringFirstCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileStringIndexCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileStringInsertCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileStringIsCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);
MODULE_SCOPE int	TclCompileStringLastCmd(Tcl_Interp *interp,
			    Tcl_Parse *parsePtr, Command *cmdPtr,
			    struct CompileEnv *envPtr);

 *
 * MODULE_SCOPE int	TclHasStringRep(Tcl_Obj *objPtr);
 *----------------------------------------------------------------
 */

#define TclHasStringRep(objPtr) ((objPtr)->bytes != NULL)

/*
 *----------------------------------------------------------------
 * Macro used by the Tcl core to get the bignum out of the bignum
 * representation of a Tcl_Obj.
 * The ANSI C "prototype" for this macro is:
 *
 * MODULE_SCOPE void	TclUnpackBignum(Tcl_Obj *objPtr, mp_int bignum);
 *----------------------------------------------------------------
 */

#define TclUnpackBignum(objPtr, bignum) \
    do {								\
	register Tcl_Obj *bignumObj = (objPtr);				\
	register int bignumPayload =					\
		PTR2INT(bignumObj->internalRep.twoPtrValue.ptr2);	\
	if (bignumPayload == -1) {					\
	    (bignum) = *((mp_int *) bignumObj->internalRep.twoPtrValue.ptr1); \
	} else {							\
	    (bignum).dp = bignumObj->internalRep.twoPtrValue.ptr1;	\
	    (bignum).sign = bignumPayload >> 30;			\
	    (bignum).alloc = (bignumPayload >> 15) & 0x7fff;		\
	    (bignum).used = bignumPayload & 0x7fff;			\
	}								\
    } while (0) 

/*
 *----------------------------------------------------------------
 * Macros used by the Tcl core to grow Tcl_Token arrays. They use the same
 * growth algorithm as used in tclStringObj.c for growing strings. The ANSI C
 * "prototype" for this macro is:
 *
 * MODULE_SCOPE void	TclGrowTokenArray(Tcl_Token *tokenPtr, int used,

/*
 * tclLink.c --
 *
 *	This file implements linked variables (a C variable that is tied to a
 *	Tcl variable). The idea of linked variables was first suggested by
 *	Andreas Stolcke and this implementation is based heavily on a
 *	prototype implementation provided by him.
 *
 * Copyright (c) 1993 The Regents of the University of California.
 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
 * Copyright (c) 2008 Rene Zaumseil
 * Copyright (c) 2019 Donal K. Fellows
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tclInt.h"
#include "tommath.h"
#include <math.h>

/*
 * For each linked variable there is a data structure of the following type,
 * which describes the link and is the clientData for the trace set on the Tcl
 * variable.
 */

typedef struct {
    Tcl_Interp *interp;		/* Interpreter containing Tcl variable. */
    Tcl_Obj *varName;		/* Name of variable (must be global). This is
				 * needed during trace callbacks, since the
				 * actual variable may be aliased at that time
				 * via upvar. */
    void *addr;			/* Location of C variable. */
    int bytes;			/* Size of C variable array. This is 0 when
				 * single variables, and >0 used for array
				 * variables. */
    int numElems;		/* Number of elements in C variable array.
				 * Zero for single variables. */
    int type;			/* Type of link (TCL_LINK_INT, etc.). */
    union {
	char c;
	unsigned char uc;
	int i;
	unsigned int ui;
	short s;
	unsigned short us;
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
	long l;
	unsigned long ul;
#endif
	Tcl_WideInt w;
	Tcl_WideUInt uw;
	float f;
	double d;
	void *aryPtr;		/* Generic array. */
	char *cPtr;		/* char array */
	unsigned char *ucPtr;	/* unsigned char array */
	short *sPtr;		/* short array */
	unsigned short *usPtr;	/* unsigned short array */
	int *iPtr;		/* int array */
	unsigned int *uiPtr;	/* unsigned int array */
	long *lPtr;		/* long array */
	unsigned long *ulPtr;	/* unsigned long array */
	Tcl_WideInt *wPtr;	/* wide (long long) array */
	Tcl_WideUInt *uwPtr;	/* unsigned wide (long long) array */
	float *fPtr;		/* float array */
	double *dPtr;		/* double array */
    } lastValue;		/* Last known value of C variable; used to
				 * avoid string conversions. */
    int flags;			/* Miscellaneous one-bit values; see below for
				 * definitions. */
} Link;

/*
 * Definitions for flag bits:
 * LINK_READ_ONLY -		1 means errors should be generated if Tcl
 *				script attempts to write variable.
 * LINK_BEING_UPDATED -		1 means that a call to Tcl_UpdateLinkedVar is
 *				in progress for this variable, so trace
 *				callbacks on the variable should be ignored.
 * LINK_ALLOC_ADDR -		1 means linkPtr->addr was allocated on the
 *				heap.
 * LINK_ALLOC_LAST -		1 means linkPtr->valueLast.p was allocated on
 *				the heap.
 */

#define LINK_READ_ONLY		1
#define LINK_BEING_UPDATED	2
#define LINK_ALLOC_ADDR		4
#define LINK_ALLOC_LAST		8

/*
 * Forward references to functions defined later in this file:
 */

static char *		LinkTraceProc(ClientData clientData,Tcl_Interp *interp,
			    const char *name1, const char *name2, int flags);
static Tcl_Obj *	ObjValue(Link *linkPtr);
static void		LinkFree(Link *linkPtr);
static int		GetInvalidIntFromObj(Tcl_Obj *objPtr, int *intPtr);

static int		GetInvalidDoubleFromObj(Tcl_Obj *objPtr,
			    double *doublePtr);
static int		SetInvalidRealFromAny(Tcl_Interp *interp,
			    Tcl_Obj *objPtr);

/*
 * A marker type used to flag weirdnesses so we can pass them around right.
 */

static Tcl_ObjType invalidRealType = {
    "invalidReal",			/* name */
    NULL,				/* freeIntRepProc */
    NULL,				/* dupIntRepProc */
    NULL,				/* updateStringProc */
    NULL				/* setFromAnyProc */
};

/*
 * Convenience macro for accessing the value of the C variable pointed to by a
 * link. Note that this macro produces something that may be regarded as an
 * lvalue or rvalue; it may be assigned to as well as read. Also note that
 * this macro assumes the name of the variable being accessed (linkPtr); this
 * is not strictly a good thing, but it keeps the code much shorter and

 *----------------------------------------------------------------------
 */

int
Tcl_LinkVar(
    Tcl_Interp *interp,		/* Interpreter in which varName exists. */
    const char *varName,	/* Name of a global variable in interp. */
    void *addr,			/* Address of a C variable to be linked to
				 * varName. */
    int type)			/* Type of C variable: TCL_LINK_INT, etc. Also
				 * may have TCL_LINK_READ_ONLY OR'ed in. */
{
    Tcl_Obj *objPtr;
    Link *linkPtr;
    int code;

    }
#endif
    if (type & TCL_LINK_READ_ONLY) {
	linkPtr->flags = LINK_READ_ONLY;
    } else {
	linkPtr->flags = 0;
    }
    linkPtr->bytes = 0;
    linkPtr->numElems = 0;
    objPtr = ObjValue(linkPtr);
    if (Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr,
	    TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
	return TCL_ERROR;
    }
    code = Tcl_TraceVar2(interp, varName, NULL,
	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
	    LinkTraceProc, linkPtr);
    if (code != TCL_OK) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
    }
    return code;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_LinkArray --
 *
 *	Link a C variable array to a Tcl variable so that changes to either
 *	one causes the other to change.
 *
 * Results:
 *	The return value is TCL_OK if everything went well or TCL_ERROR if an
 *	error occurred (the interp's result is also set after errors).
 *
 * Side effects:
 *	The value at *addr is linked to the Tcl variable "varName", using
 *	"type" to convert between string values for Tcl and binary values for
 *	*addr.
 *
 *----------------------------------------------------------------------
 */

int
Tcl_LinkArray(
    Tcl_Interp *interp,		/* Interpreter in which varName exists. */
    const char *varName,	/* Name of a global variable in interp. */
    void *addr,			/* Address of a C variable to be linked to
				 * varName. If NULL then the necessary space
				 * will be allocated and returned as the
				 * interpreter result. */
    int type,			/* Type of C variable: TCL_LINK_INT, etc. Also
				 * may have TCL_LINK_READ_ONLY OR'ed in. */
    int size)			/* Size of C variable array, >1 if array */
{
    Tcl_Obj *objPtr;
    Link *linkPtr;
    int code;

    if (size < 1) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"wrong array size given", -1));
	return TCL_ERROR;
    }

    linkPtr = Tcl_Alloc(sizeof(Link));
    linkPtr->type = type & ~TCL_LINK_READ_ONLY;
    linkPtr->numElems = size;
    if (type & TCL_LINK_READ_ONLY) {
	linkPtr->flags = LINK_READ_ONLY;
    } else {
	linkPtr->flags = 0;
    }

    switch (linkPtr->type) {
    case TCL_LINK_INT:
    case TCL_LINK_BOOLEAN:
	linkPtr->bytes = size * sizeof(int);
	break;
    case TCL_LINK_DOUBLE:
	linkPtr->bytes = size * sizeof(double);
	break;
    case TCL_LINK_WIDE_INT:
	linkPtr->bytes = size * sizeof(Tcl_WideInt);
	break;
    case TCL_LINK_WIDE_UINT:
	linkPtr->bytes = size * sizeof(Tcl_WideUInt);
	break;
    case TCL_LINK_CHAR:
	linkPtr->bytes = size * sizeof(char);
	break;
    case TCL_LINK_UCHAR:
	linkPtr->bytes = size * sizeof(unsigned char);
	break;
    case TCL_LINK_SHORT:
	linkPtr->bytes = size * sizeof(short);
	break;
    case TCL_LINK_USHORT:
	linkPtr->bytes = size * sizeof(unsigned short);
	break;
    case TCL_LINK_UINT:
	linkPtr->bytes = size * sizeof(unsigned int);
	break;
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
    case TCL_LINK_LONG:
	linkPtr->bytes = size * sizeof(long);
	break;
    case TCL_LINK_ULONG:
	linkPtr->bytes = size * sizeof(unsigned long);
	break;
#endif
    case TCL_LINK_FLOAT:
	linkPtr->bytes = size * sizeof(float);
	break;
    case TCL_LINK_STRING:
	linkPtr->bytes = size * sizeof(char);
	size = 1;		/* This is a variable length string, no need
				 * to check last value. */

	/*
	 * If no address is given create one and use as address the
         * not needed linkPtr->lastValue
	 */

	if (addr == NULL) {
	    linkPtr->lastValue.aryPtr = Tcl_Alloc(linkPtr->bytes);
	    linkPtr->flags |= LINK_ALLOC_LAST;
	    addr = (char *) &linkPtr->lastValue.cPtr;
	}
	break;
    case TCL_LINK_CHARS:
    case TCL_LINK_BINARY:
	linkPtr->bytes = size * sizeof(char);
	break;
    default:
	LinkFree(linkPtr);
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"bad linked array variable type", -1));
	return TCL_ERROR;
    }

    /*
     * Allocate C variable space in case no address is given
     */

    if (addr == NULL) {
	linkPtr->addr = Tcl_Alloc(linkPtr->bytes);
	linkPtr->flags |= LINK_ALLOC_ADDR;
    } else {
	linkPtr->addr = addr;
    }

    /*
     * If necessary create space for last used value.
     */

    if (size > 1) {
	linkPtr->lastValue.aryPtr = Tcl_Alloc(linkPtr->bytes);
	linkPtr->flags |= LINK_ALLOC_LAST;
    }

    /*
     * Initialize allocated space.
     */

    if (linkPtr->flags & LINK_ALLOC_ADDR) {
	memset(linkPtr->addr, 0, linkPtr->bytes);
    }
    if (linkPtr->flags & LINK_ALLOC_LAST) {
	memset(linkPtr->lastValue.aryPtr, 0, linkPtr->bytes);
    }

    /*
     * Set common structure values.
     */

    linkPtr->interp = interp;
    linkPtr->varName = Tcl_NewStringObj(varName, -1);
    Tcl_IncrRefCount(linkPtr->varName);
    objPtr = ObjValue(linkPtr);
    if (Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr,
	    TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
	return TCL_ERROR;
    }

    code = Tcl_TraceVar2(interp, varName, NULL,
	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
	    LinkTraceProc, linkPtr);
    if (code != TCL_OK) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
    } else {
	Tcl_SetObjResult(interp, Tcl_NewIntObj((int) linkPtr->addr));
    }
    return code;
}

/*
 *----------------------------------------------------------------------
 *

    if (linkPtr == NULL) {
	return;
    }
    Tcl_UntraceVar2(interp, varName, NULL,
	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
	    LinkTraceProc, linkPtr);
    Tcl_DecrRefCount(linkPtr->varName);
    LinkFree(linkPtr);
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_UpdateLinkedVar --
 *

	linkPtr->flags = (linkPtr->flags & ~LINK_BEING_UPDATED) | savedFlag;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * GetInt, GetWide, GetUWide, GetDouble, EqualDouble, IsSpecial --
 *
 *	Helper functions for LinkTraceProc and ObjValue. These are all
 *	factored out here to make those functions simpler.
 *
 *----------------------------------------------------------------------
 */

static inline int
GetInt(
    Tcl_Obj *objPtr,
    int *intPtr)
{
    return (Tcl_GetIntFromObj(NULL, objPtr, intPtr) != TCL_OK
	    && GetInvalidIntFromObj(objPtr, intPtr) != TCL_OK);
}

static inline int
GetWide(
    Tcl_Obj *objPtr,
    Tcl_WideInt *widePtr)
{
    if (Tcl_GetWideIntFromObj(NULL, objPtr, widePtr) != TCL_OK) {
	int intValue;

	if (GetInvalidIntFromObj(objPtr, &intValue) != TCL_OK) {
	    return 1;
	}
	*widePtr = intValue;
    }
    return 0;
}

static inline int
GetUWide(
    Tcl_Obj *objPtr,
    Tcl_WideUInt *uwidePtr)
{
    Tcl_WideInt *widePtr = (Tcl_WideInt *) uwidePtr;
    ClientData clientData;
    int type, intValue;

    if (TclGetNumberFromObj(NULL, objPtr, &clientData, &type) == TCL_OK) {
	if (type == TCL_NUMBER_INT) {
	    *widePtr = *((const Tcl_WideInt *) clientData);
	    return (*widePtr < 0);
	} else if (type == TCL_NUMBER_BIG) {
	    mp_int *numPtr = clientData;
	    Tcl_WideUInt value = 0;
	    union {
		Tcl_WideUInt value;
		unsigned char bytes[sizeof(Tcl_WideUInt)];
	    } scratch;
	    unsigned long numBytes = sizeof(Tcl_WideUInt);
	    unsigned char *bytes = scratch.bytes;

	    if (numPtr->sign || (MP_OKAY != mp_to_unsigned_bin_n(numPtr,
		    bytes, &numBytes))) {
		/*
		 * If the sign bit is set (a negative value) or if the value
		 * can't possibly fit in the bits of an unsigned wide, there's
		 * no point in doing further conversion.
		 */
		return 1;
	    }
#ifdef WORDS_BIGENDIAN
	    while (numBytes-- > 0) {
		value = (value << CHAR_BIT) | *bytes++;
	    }
#else /* !WORDS_BIGENDIAN */
	    /*
	     * Little-endian can read the value directly.
	     */
	    value = scratch.value;
#endif /* WORDS_BIGENDIAN */
	    *uwidePtr = value;
	    return 0;
	}
    }

    /*
     * Evil edge case fallback.
     */

    if (GetInvalidIntFromObj(objPtr, &intValue) != TCL_OK) {
	return 1;
    }
    *uwidePtr = intValue;
    return 0;
}

static inline int
GetDouble(
    Tcl_Obj *objPtr,
    double *dblPtr)
{
    if (Tcl_GetDoubleFromObj(NULL, objPtr, dblPtr) == TCL_OK) {
	return 0;
    } else {
#ifdef ACCEPT_NAN
	Tcl_ObjIntRep *irPtr = TclFetchIntRep(objPtr, &tclDoubleType);

	if (irPtr != NULL) {
	    *dblPtr = irPtr->doubleValue;
	    return 0;
	}
#endif /* ACCEPT_NAN */
	return GetInvalidDoubleFromObj(objPtr, dblPtr) != TCL_OK;
    }
}

static inline int
EqualDouble(
    double a,
    double b)
{
    return (a == b)
#ifdef ACCEPT_NAN
	|| (TclIsNaN(a) && TclIsNaN(b))
#endif /* ACCEPT_NAN */
	;
}

static inline int
IsSpecial(
    double a)
{
    return TclIsInfinite(a)
#ifdef ACCEPT_NAN
	|| TclIsNaN(a)
#endif /* ACCEPT_NAN */
	;
}

/*
 * Mark an object as holding a weird double.
 */

static int
SetInvalidRealFromAny(
    Tcl_Interp *interp,
    Tcl_Obj *objPtr)
{
    size_t length;
    const char *str, *endPtr;

    str = TclGetStringFromObj(objPtr, &length);
    if ((length == 1) && (str[0] == '.')) {
	objPtr->typePtr = &invalidRealType;
	objPtr->internalRep.doubleValue = 0.0;
	return TCL_OK;
    }
    if (TclParseNumber(NULL, objPtr, NULL, str, length, &endPtr,
	    TCL_PARSE_DECIMAL_ONLY) == TCL_OK) {
	/*
	 * If number is followed by [eE][+-]?, then it is an invalid double,
	 * but it could be the start of a valid double.
	 */

	if (*endPtr == 'e' || *endPtr == 'E') {
	    ++endPtr;
	    if (*endPtr == '+' || *endPtr == '-') {
		++endPtr;
	    }
	    if (*endPtr == 0) {
		double doubleValue = 0.0;

		Tcl_GetDoubleFromObj(NULL, objPtr, &doubleValue);
		TclFreeIntRep(objPtr);
		objPtr->typePtr = &invalidRealType;
		objPtr->internalRep.doubleValue = doubleValue;
		return TCL_OK;
	    }
	}
    }
    return TCL_ERROR;
}

/*
 * This function checks for integer representations, which are valid when
 * linking with C variables, but which are invalid in other contexts in Tcl.
 * Handled are "+", "-", "", "0x", "0b", "0d" and "0o" (upper- and
 * lower-case).  See bug [39f6304c2e].
 */

static int
GetInvalidIntFromObj(
    Tcl_Obj *objPtr,
    int *intPtr)
{
    size_t length;
    const char *str = TclGetStringFromObj(objPtr, &length);

    if ((length == 0) ||
	    ((length == 2) && (str[0] == '0') && strchr("xXbBoOdD", str[1]))) {
	*intPtr = 0;
	return TCL_OK;
    } else if ((length == 1) && strchr("+-", str[0])) {
	*intPtr = (str[0] == '+');
	return TCL_OK;
    }
    return TCL_ERROR;
}

/*
 * This function checks for double representations, which are valid when
 * linking with C variables, but which are invalid in other contexts in Tcl.
 * Handled are "+", "-", "", ".", "0x", "0b" and "0o" (upper- and lower-case)
 * and sequences like "1e-". See bug [39f6304c2e].
 */

static int
GetInvalidDoubleFromObj(
    Tcl_Obj *objPtr,
    double *doublePtr)
{
    int intValue;

    if (TclHasIntRep(objPtr, &invalidRealType)) {
	goto gotdouble;
    }
    if (GetInvalidIntFromObj(objPtr, &intValue) == TCL_OK) {
	*doublePtr = (double) intValue;
	return TCL_OK;
    }
    if (SetInvalidRealFromAny(NULL, objPtr) == TCL_OK) {
    gotdouble:
	*doublePtr = objPtr->internalRep.doubleValue;
	return TCL_OK;
    }
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * LinkTraceProc --
 *
 *	This function is invoked when a linked Tcl variable is read, written,
 *	or unset from Tcl. It's responsible for keeping the C variable in sync
 *	with the Tcl variable.
 *
 * Results:

    Tcl_Interp *interp,		/* Interpreter containing Tcl variable. */
    const char *name1,		/* First part of variable name. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Miscellaneous additional information. */
{
    Link *linkPtr = clientData;
    int changed;
    int valueLength;
    const char *value;
    char **pp;
    Tcl_Obj *valueObj;
    int valueInt;
    Tcl_WideInt valueWide;
    Tcl_WideUInt valueUWide;
    double valueDouble;
    int objc;
    Tcl_Obj **objv;
    int i;

    /*
     * If the variable is being unset, then just re-create it (with a trace)
     * unless the whole interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if (Tcl_InterpDeleted(interp)) {
	    Tcl_DecrRefCount(linkPtr->varName);
	    LinkFree(linkPtr);
	} else if (flags & TCL_TRACE_DESTROYED) {
	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
		    TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, TclGetString(linkPtr->varName), NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES
		    |TCL_TRACE_UNSETS, LinkTraceProc, linkPtr);
	}

    /*
     * For read accesses, update the Tcl variable if the C variable has
     * changed since the last time we updated the Tcl variable.
     */

    if (flags & TCL_TRACE_READS) {
	/*
	 * Variable arrays
	 */

	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    changed = memcmp(linkPtr->addr, linkPtr->lastValue.aryPtr,
		    linkPtr->bytes);
	} else {
	    /* single variables */
	    switch (linkPtr->type) {
	    case TCL_LINK_INT:
	    case TCL_LINK_BOOLEAN:
		changed = (LinkedVar(int) != linkPtr->lastValue.i);
		break;
	    case TCL_LINK_DOUBLE:
		changed = !EqualDouble(LinkedVar(double), linkPtr->lastValue.d);
		break;
	    case TCL_LINK_WIDE_INT:
		changed = (LinkedVar(Tcl_WideInt) != linkPtr->lastValue.w);
		break;
	    case TCL_LINK_WIDE_UINT:
		changed = (LinkedVar(Tcl_WideUInt) != linkPtr->lastValue.uw);
		break;
	    case TCL_LINK_CHAR:
		changed = (LinkedVar(char) != linkPtr->lastValue.c);
		break;
	    case TCL_LINK_UCHAR:
		changed = (LinkedVar(unsigned char) != linkPtr->lastValue.uc);
		break;
	    case TCL_LINK_SHORT:
		changed = (LinkedVar(short) != linkPtr->lastValue.s);
		break;
	    case TCL_LINK_USHORT:
		changed = (LinkedVar(unsigned short) != linkPtr->lastValue.us);
		break;
	    case TCL_LINK_UINT:
		changed = (LinkedVar(unsigned int) != linkPtr->lastValue.ui);
		break;
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
	    case TCL_LINK_LONG:
		changed = (LinkedVar(long) != linkPtr->lastValue.l);
		break;
	    case TCL_LINK_ULONG:
		changed = (LinkedVar(unsigned long) != linkPtr->lastValue.ul);
		break;
#endif
	    case TCL_LINK_FLOAT:
		changed = !EqualDouble(LinkedVar(float), linkPtr->lastValue.f);
		break;
	    case TCL_LINK_STRING:
	    case TCL_LINK_CHARS:
	    case TCL_LINK_BINARY:
		changed = 1;
		break;
	    default:
		changed = 0;
		/* return (char *) "internal error: bad linked variable type"; */
	    }
	}
	if (changed) {
	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
		    TCL_GLOBAL_ONLY);
	}
	return NULL;
    }

	/*
	 * This shouldn't ever happen.
	 */

	return (char *) "internal error: linked variable couldn't be read";
    }


































































































































    /*

     * Special cases.
     */








    switch (linkPtr->type) {











    case TCL_LINK_STRING:
	value = TclGetStringFromObj(valueObj, &valueLength);
	pp = (char **) linkPtr->addr;

	*pp = Tcl_Realloc(*pp, ++valueLength);
	memcpy(*pp, value, valueLength);
	return NULL;

    case TCL_LINK_CHARS:
	value = (char *) Tcl_GetStringFromObj(valueObj, &valueLength);
	valueLength++;		/* include end of string char */
	if (valueLength > linkPtr->bytes) {
	    return (char *) "wrong size of char* value";
	}
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, value, (size_t) valueLength);
	    memcpy(linkPtr->addr, value, (size_t) valueLength);
	} else {
	    linkPtr->lastValue.c = '\0';
	    LinkedVar(char) = linkPtr->lastValue.c;
	}
	return NULL;

    case TCL_LINK_BINARY:
	value = (char *) Tcl_GetByteArrayFromObj(valueObj, &valueLength);
	if (valueLength != linkPtr->bytes) {
	    return (char *) "wrong size of binary value";
	}
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, value, (size_t) valueLength);
	    memcpy(linkPtr->addr, value, (size_t) valueLength);
	} else {
	    linkPtr->lastValue.uc = (unsigned char) *value;
	    LinkedVar(unsigned char) = linkPtr->lastValue.uc;
	}
	return NULL;
    }

    /*
     * A helper macro. Writing this as a function is messy because of type
     * variance.
     */

#define InRange(lowerLimit, value, upperLimit)			\
    ((value) >= (lowerLimit) && (value) <= (upperLimit))

    /*
     * If we're working with an array of numbers, extract the Tcl list.
     */

    if (linkPtr->flags & LINK_ALLOC_LAST) {
	if (Tcl_ListObjGetElements(NULL, (valueObj), &objc, &objv) == TCL_ERROR
		|| objc != linkPtr->numElems) {
	    return (char *) "wrong dimension";
	}
    }

    switch (linkPtr->type) {
    case TCL_LINK_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		int *varPtr = &linkPtr->lastValue.iPtr[i];

		if (GetInt(objv[i], varPtr)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have integer values";
		}
	    }
	} else {
	    int *varPtr = &linkPtr->lastValue.i;

	    if (GetInt(valueObj, varPtr)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have integer value";
	    }
	    LinkedVar(int) = *varPtr;
	}
	break;

    case TCL_LINK_WIDE_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		Tcl_WideInt *varPtr = &linkPtr->lastValue.wPtr[i];

		if (GetWide(objv[i], varPtr)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		    return (char *)
			    "variable array must have wide integer value";
		}
	    }
	} else {
	    Tcl_WideInt *varPtr = &linkPtr->lastValue.w;

	    if (GetWide(valueObj, varPtr)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have wide integer value";
	    }
	    LinkedVar(Tcl_WideInt) = *varPtr;
	}
	break;

    case TCL_LINK_DOUBLE:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetDouble(objv[i], &linkPtr->lastValue.dPtr[i])) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		    return (char *) "variable array must have real value";
		}
	    }
	} else {
	    double *varPtr = &linkPtr->lastValue.d;

	    if (GetDouble(valueObj, varPtr)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have real value";
	    }
	    LinkedVar(double) = *varPtr;
	}
	break;

    case TCL_LINK_BOOLEAN:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		int *varPtr = &linkPtr->lastValue.iPtr[i];

		if (Tcl_GetBooleanFromObj(NULL, objv[i], varPtr) != TCL_OK) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have boolean value";
		}
	    }
	} else {
	    int *varPtr = &linkPtr->lastValue.i;

	    if (Tcl_GetBooleanFromObj(NULL, valueObj, varPtr) != TCL_OK) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have boolean value";
	    }
	    LinkedVar(int) = *varPtr;
	}
	break;

    case TCL_LINK_CHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
		        || !InRange(SCHAR_MIN, valueInt, SCHAR_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have char value";
		}
		linkPtr->lastValue.cPtr[i] = (char) valueInt;
	    }
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(SCHAR_MIN, valueInt, SCHAR_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have char value";
	    }
	    LinkedVar(char) = linkPtr->lastValue.c = (char) valueInt;
	}
	break;

    case TCL_LINK_UCHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
		        || !InRange(0, valueInt, UCHAR_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		    return (char *)
			    "variable array must have unsigned char value";
		}
		linkPtr->lastValue.ucPtr[i] = (unsigned char) valueInt;
	    }
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(0, valueInt, UCHAR_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned char value";
	    }
	    LinkedVar(unsigned char) = linkPtr->lastValue.uc =
		    (unsigned char) valueInt;
	}
	break;

    case TCL_LINK_SHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
			|| !InRange(SHRT_MIN, valueInt, SHRT_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have short value";
		}
		linkPtr->lastValue.sPtr[i] = (short) valueInt;
	    }
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(SHRT_MIN, valueInt, SHRT_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have short value";
	    }
	    LinkedVar(short) = linkPtr->lastValue.s = (short) valueInt;
	}
	break;

    case TCL_LINK_USHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
		        || !InRange(0, valueInt, USHRT_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			"variable array must have unsigned short value";
		}
		linkPtr->lastValue.usPtr[i] = (unsigned short) valueInt;
	    }
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(0, valueInt, USHRT_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned short value";
	    }
	    LinkedVar(unsigned short) = linkPtr->lastValue.us =
		    (unsigned short) valueInt;
	}
	break;

    case TCL_LINK_UINT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetWide(objv[i], &valueWide)
			|| !InRange(0, valueWide, UINT_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			    "variable array must have unsigned int value";
		}
		linkPtr->lastValue.uiPtr[i] = (unsigned int) valueWide;
	    }
	} else {
	    if (GetWide(valueObj, &valueWide)
		    || !InRange(0, valueWide, UINT_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned int value";
	    }
	    LinkedVar(unsigned int) = linkPtr->lastValue.ui =
		    (unsigned int) valueWide;
	}
	break;

#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
    case TCL_LINK_LONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetWide(objv[i], &valueWide)
			|| !InRange(LONG_MIN, valueWide, LONG_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have long value";
		}
		linkPtr->lastValue.lPtr[i] = (long) valueWide;
	    }
	} else {
	    if (GetWide(valueObj, &valueWide)
		    || !InRange(LONG_MIN, valueWide, LONG_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have long value";
	    }
	    LinkedVar(long) = linkPtr->lastValue.l = (long) valueWide;
	}
	break;

    case TCL_LINK_ULONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetUWide(objv[i], &valueUWide)
			|| !InRange(0, valueUWide, ULONG_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			    "variable array must have unsigned long value";
		}
		linkPtr->lastValue.ulPtr[i] = (unsigned long) valueUWide;
	    }
	} else {
	    if (GetUWide(valueObj, &valueUWide)
		    || !InRange(0, valueUWide, ULONG_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned long value";
	    }
	    LinkedVar(unsigned long) = linkPtr->lastValue.ul =
		    (unsigned long) valueUWide;
	}
	break;
#endif

    case TCL_LINK_WIDE_UINT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetUWide(objv[i], &valueUWide)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			    "variable array must have unsigned wide int value";
		}
		linkPtr->lastValue.uwPtr[i] = valueUWide;
	    }
	} else {
	    if (GetUWide(valueObj, &valueUWide)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned wide int value";
	    }
	    LinkedVar(Tcl_WideUInt) = linkPtr->lastValue.uw = valueUWide;
	}
	break;

    case TCL_LINK_FLOAT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    for (i=0; i < objc; i++) {
		if (GetDouble(objv[i], &valueDouble)
			&& !InRange(FLT_MIN, fabs(valueDouble), FLT_MAX)
		        && !IsSpecial(valueDouble)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have float value";
		}
		linkPtr->lastValue.fPtr[i] = (float) valueDouble;
	    }
	} else {
	    if (GetDouble(valueObj, &valueDouble)
		    && !InRange(FLT_MIN, fabs(valueDouble), FLT_MAX)
		    && !IsSpecial(valueDouble)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have float value";
	    }
	    LinkedVar(float) = linkPtr->lastValue.f = (float) valueDouble;
	}
	break;

    default:
	return (char *) "internal error: bad linked variable type";
    }

    if (linkPtr->flags & LINK_ALLOC_LAST) {
	memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
    }
    return NULL;
}

/*
 *----------------------------------------------------------------------
 *
 * ObjValue --

 */

static Tcl_Obj *
ObjValue(
    Link *linkPtr)		/* Structure describing linked variable. */
{
    char *p;
    Tcl_Obj *resultObj, **objv;
    int i;

    switch (linkPtr->type) {
    case TCL_LINK_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.iPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.i = LinkedVar(int);
	return Tcl_NewIntObj(linkPtr->lastValue.i);
    case TCL_LINK_WIDE_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.wPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.w = LinkedVar(Tcl_WideInt);
	return Tcl_NewWideIntObj(linkPtr->lastValue.w);
    case TCL_LINK_DOUBLE:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewDoubleObj(linkPtr->lastValue.dPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.d = LinkedVar(double);
	return Tcl_NewDoubleObj(linkPtr->lastValue.d);
    case TCL_LINK_BOOLEAN:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewBooleanObj(linkPtr->lastValue.iPtr[i] != 0);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.i = LinkedVar(int);
	return Tcl_NewBooleanObj(linkPtr->lastValue.i);
    case TCL_LINK_CHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.cPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.c = LinkedVar(char);
	return Tcl_NewIntObj(linkPtr->lastValue.c);
    case TCL_LINK_UCHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.ucPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.uc = LinkedVar(unsigned char);
	return Tcl_NewIntObj(linkPtr->lastValue.uc);
    case TCL_LINK_SHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.sPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.s = LinkedVar(short);
	return Tcl_NewIntObj(linkPtr->lastValue.s);
    case TCL_LINK_USHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.usPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.us = LinkedVar(unsigned short);
	return Tcl_NewIntObj(linkPtr->lastValue.us);
    case TCL_LINK_UINT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.uiPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.ui = LinkedVar(unsigned int);
	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.ui);
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
    case TCL_LINK_LONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.lPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.l = LinkedVar(long);
	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.l);
    case TCL_LINK_ULONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.ulPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.ul = LinkedVar(unsigned long);
	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.ul);
#endif
    case TCL_LINK_FLOAT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewDoubleObj(linkPtr->lastValue.fPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.f = LinkedVar(float);
	return Tcl_NewDoubleObj(linkPtr->lastValue.f);
    case TCL_LINK_WIDE_UINT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objv = Tcl_Alloc(linkPtr->numElems * sizeof(Tcl_Obj *));
	    for (i=0; i < linkPtr->numElems; i++) {
		objv[i] = Tcl_NewWideIntObj((Tcl_WideInt)
			linkPtr->lastValue.uwPtr[i]);
	    }
	    resultObj = Tcl_NewListObj(linkPtr->numElems, objv);
	    Tcl_Free(objv);
	    return resultObj;
	}
	linkPtr->lastValue.uw = LinkedVar(Tcl_WideUInt);



	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.uw);

    case TCL_LINK_STRING:
	p = LinkedVar(char *);
	if (p == NULL) {
	    TclNewLiteralStringObj(resultObj, "NULL");
	    return resultObj;
	}
	return Tcl_NewStringObj(p, -1);

    case TCL_LINK_CHARS:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    linkPtr->lastValue.cPtr[linkPtr->bytes-1] = '\0';
	    /* take care of proper string end */
	    return Tcl_NewStringObj(linkPtr->lastValue.cPtr, linkPtr->bytes);
	}
	linkPtr->lastValue.c = '\0';
	return Tcl_NewStringObj(&linkPtr->lastValue.c, 1);

    case TCL_LINK_BINARY:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    return Tcl_NewByteArrayObj((unsigned char *) linkPtr->addr,
		    linkPtr->bytes);
	}
	linkPtr->lastValue.uc = LinkedVar(unsigned char);
	return Tcl_NewByteArrayObj(&linkPtr->lastValue.uc, 1);

    /*
     * This code only gets executed if the link type is unknown (shouldn't
     * ever happen).
     */

    default:
	TclNewLiteralStringObj(resultObj, "??");
	return resultObj;
    }
}


/*
 *----------------------------------------------------------------------
 *


 * LinkFree --




 *




 *	Free's allocated space of given link and link structure.
 *
















 * Results:


 *	None.





 *
 * Side effects:
 *	None.
 *





 *----------------------------------------------------------------------
 */





static void


LinkFree(







    Link *linkPtr)		/* Structure describing linked variable. */


{

    if (linkPtr->flags & LINK_ALLOC_ADDR) {



	Tcl_Free(linkPtr->addr);

    }
    if (linkPtr->flags & LINK_ALLOC_LAST) {










	Tcl_Free(linkPtr->lastValue.aryPtr);


    }

    Tcl_Free(linkPtr);








}

/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */

	 * both. Allocate a new struct and insert elements into it.
	 */

	List *oldListRepPtr = listRepPtr;
	Tcl_Obj **oldPtrs = elemPtrs;
	int newMax;

	if (needGrow) {
	    newMax = 2 * numRequired;
	} else {
	    newMax = listRepPtr->maxElemCount;
	}

	listRepPtr = AttemptNewList(NULL, newMax, NULL);
	if (listRepPtr == NULL) {

	    mp_shrink(&(bignum));                                       \
	}                                                               \
	(objPtr)->internalRep.twoPtrValue.ptr1 = (bignum).dp;           \
	(objPtr)->internalRep.twoPtrValue.ptr2 = INT2PTR( ((bignum).sign << 30) \
		| ((bignum).alloc << 15) | ((bignum).used));            \
    }












/*
 * Prototypes for functions defined later in this file:
 */

static int		ParseBoolean(Tcl_Obj *objPtr);
static int		SetDoubleFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);
static int		SetIntFromAny(Tcl_Interp *interp, Tcl_Obj *objPtr);

	if (objPtr->typePtr == &tclIntType) {
	    *dblPtr = (double) objPtr->internalRep.wideValue;
	    return TCL_OK;
	}
	if (objPtr->typePtr == &tclBignumType) {
	    mp_int big;

	    TclUnpackBignum(objPtr, big);
	    *dblPtr = TclBignumToDouble(&big);
	    return TCL_OK;
	}
    } while (SetDoubleFromAny(interp, objPtr) == TCL_OK);
    return TCL_ERROR;
}


	     * values in the unsigned long range will fit in a long.
	     */

	    mp_int big;
	    unsigned long scratch, value = 0, numBytes = sizeof(unsigned long);
	    unsigned char *bytes = (unsigned char *) &scratch;

	    TclUnpackBignum(objPtr, big);
	    if (mp_to_unsigned_bin_n(&big, bytes, &numBytes) == MP_OKAY) {
		while (numBytes-- > 0) {
			value = (value << CHAR_BIT) | *bytes++;
		}
		if (big.sign) {
		    if (value <= 1 + (unsigned long)LONG_MAX) {
			*longPtr = - (long) value;

	    mp_int big;
	    Tcl_WideUInt value = 0;
	    unsigned long numBytes = sizeof(Tcl_WideInt);
	    Tcl_WideInt scratch;
	    unsigned char *bytes = (unsigned char *) &scratch;

	    TclUnpackBignum(objPtr, big);
	    if (mp_to_unsigned_bin_n(&big, bytes, &numBytes) == MP_OKAY) {
		while (numBytes-- > 0) {
		    value = (value << CHAR_BIT) | *bytes++;
		}
		if (big.sign) {
		    if (value <= 1 + ~(Tcl_WideUInt)WIDE_MIN) {
			*wideIntPtr = - (Tcl_WideInt) value;

static void
FreeBignum(
    Tcl_Obj *objPtr)
{
    mp_int toFree;		/* Bignum to free */

    TclUnpackBignum(objPtr, toFree);
    mp_clear(&toFree);
    if (PTR2INT(objPtr->internalRep.twoPtrValue.ptr2) < 0) {
	Tcl_Free(objPtr->internalRep.twoPtrValue.ptr1);
    }
    objPtr->typePtr = NULL;
}


    Tcl_Obj *srcPtr,
    Tcl_Obj *copyPtr)
{
    mp_int bignumVal;
    mp_int bignumCopy;

    copyPtr->typePtr = &tclBignumType;
    TclUnpackBignum(srcPtr, bignumVal);
    if (mp_init_copy(&bignumCopy, &bignumVal) != MP_OKAY) {
	Tcl_Panic("initialization failure in DupBignum");
    }
    PACK_BIGNUM(bignumCopy, copyPtr);
}

/*

UpdateStringOfBignum(
    Tcl_Obj *objPtr)
{
    mp_int bignumVal;
    int size;
    char *stringVal;

    TclUnpackBignum(objPtr, bignumVal);
    if (MP_OKAY != mp_radix_size(&bignumVal, 10, &size)) {
	Tcl_Panic("radix size failure in UpdateStringOfBignum");
    }
    if (size < 2) {
	/*
	 * mp_radix_size() returns < 2 when more than INT_MAX bytes would be
	 * needed to hold the string rep (because mp_radix_size ignores

    mp_int *bignumValue)	/* Returned bignum value. */
{
    do {
	if (objPtr->typePtr == &tclBignumType) {
	    if (copy || Tcl_IsShared(objPtr)) {
		mp_int temp;

		TclUnpackBignum(objPtr, temp);
		mp_init_copy(bignumValue, &temp);
	    } else {
		TclUnpackBignum(objPtr, *bignumValue);
		/* Optimized TclFreeIntRep */
		objPtr->internalRep.twoPtrValue.ptr1 = NULL;
		objPtr->internalRep.twoPtrValue.ptr2 = NULL;
		objPtr->typePtr = NULL;
		/*
		 * TODO: If objPtr has a string rep, this leaves
		 * it undisturbed.  Not clear that's proper. Pure

	    *clientDataPtr = &objPtr->internalRep.wideValue;
	    return TCL_OK;
	}
	if (objPtr->typePtr == &tclBignumType) {
	    static Tcl_ThreadDataKey bignumKey;
	    mp_int *bigPtr = Tcl_GetThreadData(&bignumKey, sizeof(mp_int));

	    TclUnpackBignum(objPtr, *bigPtr);
	    *typePtr = TCL_NUMBER_BIG;
	    *clientDataPtr = bigPtr;
	    return TCL_OK;
	}
    } while (TCL_OK ==
	    TclParseNumber(interp, objPtr, "number", NULL, -1, NULL, 0));
    return TCL_ERROR;

				 * Tcl_Preserve and Tcl_Release. */
    char *pkgIndex;		/* Full file name of pkgIndex file */
    struct PkgAvail *nextPtr;	/* Next in list of available versions of the
				 * same package. */
} PkgAvail;

typedef struct PkgName {
    struct PkgName *nextPtr;	/* Next in list of package names being
				 * initialized. */
    char name[1];
} PkgName;

typedef struct PkgFiles {
    PkgName *names;		/* Package names being initialized. Must be
				 * first field. */
    Tcl_HashTable table;	/* Table which contains files for each
				 * package. */
} PkgFiles;


/*
 * For each package that is known in any way to an interpreter, there is one
 * record of the following type. These records are stored in the
 * "packageTable" hash table in the interpreter, keyed by package name such as
 * "Tk" (no version number).
 */

typedef struct {
    Tcl_Obj *version;
    PkgAvail *availPtr;		/* First in list of all available versions of
				 * this package. */
    const void *clientData;	/* Client data. */
} Package;

typedef struct Require {
    void *clientDataPtr;
    const char *name;
    Package *pkgPtr;
    char *versionToProvide;
} Require;

typedef struct RequireProcArgs {
    const char *name;

 * Side effects:
 *	The script from some previous "package ifneeded" command may be
 *	invoked to provide the package.
 *
 *----------------------------------------------------------------------
 */

static void
PkgFilesCleanupProc(
    ClientData clientData,
    Tcl_Interp *interp)
{
    PkgFiles *pkgFiles = (PkgFiles *) clientData;
    Tcl_HashSearch search;
    Tcl_HashEntry *entry;

    while (pkgFiles->names) {
	PkgName *name = pkgFiles->names;

	pkgFiles->names = name->nextPtr;
	Tcl_Free(name);
    }
    entry = Tcl_FirstHashEntry(&pkgFiles->table, &search);
    while (entry) {
	Tcl_Obj *obj = (Tcl_Obj *)Tcl_GetHashValue(entry);

	Tcl_DecrRefCount(obj);
	entry = Tcl_NextHashEntry(&search);
    }
    Tcl_DeleteHashTable(&pkgFiles->table);
    Tcl_Free(pkgFiles);
    return;
}

void *
TclInitPkgFiles(
    Tcl_Interp *interp)
{
    /*
     * If assocdata "tclPkgFiles" doesn't exist yet, create it.
     */

    PkgFiles *pkgFiles = Tcl_GetAssocData(interp, "tclPkgFiles", NULL);

    if (!pkgFiles) {
	pkgFiles = Tcl_Alloc(sizeof(PkgFiles));
	pkgFiles->names = NULL;
	Tcl_InitHashTable(&pkgFiles->table, TCL_STRING_KEYS);
	Tcl_SetAssocData(interp, "tclPkgFiles", PkgFilesCleanupProc, pkgFiles);
    }
    return pkgFiles;
}

void
TclPkgFileSeen(
    Tcl_Interp *interp,
    const char *fileName)
{
    PkgFiles *pkgFiles = (PkgFiles *)
	    Tcl_GetAssocData(interp, "tclPkgFiles", NULL);

    if (pkgFiles && pkgFiles->names) {
	const char *name = pkgFiles->names->name;
	Tcl_HashTable *table = &pkgFiles->table;
	int new;
	Tcl_HashEntry *entry = Tcl_CreateHashEntry(table, name, &new);
	Tcl_Obj *list;

	 * those unresolved references may cause the loading of the package to
	 * also load a second copy of the Tcl library, leading to all kinds of
	 * trouble. We would like to catch that error and report a useful
	 * message back to the user. That's what we're doing.
	 *
	 * Second, how does this work? If we reach this point, then the global
	 * variable tclEmptyStringRep has the value NULL. Compare that with
	 * the definition of tclEmptyStringRep near the top of this file.  It
	 * clearly should not have the value NULL; it should point to the char
	 * tclEmptyString. If we see it having the value NULL, then somehow we
	 * are seeing a Tcl library that isn't completely initialized, and
	 * that's an indicator for the error condition described above.
	 * (Further explanation is welcome.)
	 *
	 * Third, so what do we do about it? This situation indicates the
	 * package we just loaded wasn't properly compiled to be stub-enabled,
	 * yet it thinks it is stub-enabled (it called Tcl_InitStubs()). We
	 * want to report that the package just loaded is broken, so we want
	 * to place an error message in the interpreter result and return NULL
	 * to indicate failure to Tcl_InitStubs() so that it will also fail.

    int reqc,			/* Requirements constraining the desired
				 * version. */
    Tcl_Obj *const reqv[],	/* 0 means to use the latest version
				 * available. */
    void *clientDataPtr)
{
    RequireProcArgs args;

    args.name = name;
    args.clientDataPtr = clientDataPtr;
    return Tcl_NRCallObjProc(interp,
	    TclNRPkgRequireProc, (void *) &args, reqc, reqv);
}

static int
TclNRPkgRequireProc(
    ClientData clientData,
    Tcl_Interp *interp,
    int reqc,
    Tcl_Obj *const reqv[])
{
    RequireProcArgs *args = clientData;

    Tcl_NRAddCallback(interp,
	    PkgRequireCore, (void *) args->name, INT2PTR(reqc), (void *) reqv,
	    args->clientDataPtr);
    return TCL_OK;
}

static int
PkgRequireCore(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    const char *name = data[0];
    int reqc = PTR2INT(data[1]);
    Tcl_Obj *const *reqv = data[2];
    int code = CheckAllRequirements(interp, reqc, reqv);
    Require *reqPtr;

    if (code != TCL_OK) {
	return code;
    }
    reqPtr = Tcl_Alloc(sizeof(Require));
    Tcl_NRAddCallback(interp, PkgRequireCoreCleanup, reqPtr, NULL, NULL, NULL);
    reqPtr->clientDataPtr = data[3];
    reqPtr->name = name;
    reqPtr->pkgPtr = FindPackage(interp, name);
    if (reqPtr->pkgPtr->version == NULL) {
	Tcl_NRAddCallback(interp,
		SelectPackage, reqPtr, INT2PTR(reqc), (void *) reqv,
		PkgRequireCoreStep1);
    } else {
	Tcl_NRAddCallback(interp,
		PkgRequireCoreFinal, reqPtr, INT2PTR(reqc), (void *) reqv,NULL);
    }
    return TCL_OK;
}

static int
PkgRequireCoreStep1(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    Tcl_DString command;
    char *script;
    Require *reqPtr = data[0];
    int reqc = PTR2INT(data[1]);
    Tcl_Obj **const reqv = data[2];
    const char *name = reqPtr->name /* Name of desired package. */;

    /*
     * If we've got the package in the DB already, go on to actually loading
     * it.
     */

    if (reqPtr->pkgPtr->version != NULL) {
	Tcl_NRAddCallback(interp,
		PkgRequireCoreFinal, reqPtr, INT2PTR(reqc), (void *)reqv, NULL);
	return TCL_OK;
    }

    /*
     * The package is not in the database. If there is a "package unknown"
     * command, invoke it.
     */

    script = ((Interp *) interp)->packageUnknown;
    if (script == NULL) {
	/*
	 * No package unknown script. Move on to finalizing.
	 */

	Tcl_NRAddCallback(interp,
		PkgRequireCoreFinal, reqPtr, INT2PTR(reqc), (void *)reqv, NULL);
	return TCL_OK;
    }

    /*
     * Invoke the "package unknown" script synchronously.
     */

    Tcl_DStringInit(&command);
    Tcl_DStringAppend(&command, script, -1);
    Tcl_DStringAppendElement(&command, name);
    AddRequirementsToDString(&command, reqc, reqv);

    Tcl_NRAddCallback(interp,
	    PkgRequireCoreStep2, reqPtr, INT2PTR(reqc), (void *) reqv, NULL);
    Tcl_NREvalObj(interp,
	    Tcl_NewStringObj(Tcl_DStringValue(&command),
		    Tcl_DStringLength(&command)),
	    TCL_EVAL_GLOBAL);

    Tcl_DStringFree(&command);





    return TCL_OK;
}

static int
PkgRequireCoreStep2(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    Require *reqPtr = data[0];
    int reqc = PTR2INT(data[1]);
    Tcl_Obj **const reqv = data[2];
    const char *name = reqPtr->name; /* Name of desired package. */

    if ((result != TCL_OK) && (result != TCL_ERROR)) {
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"bad return code: %d", result));
	Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "BADRESULT", NULL);
	result = TCL_ERROR;
    }
    if (result == TCL_ERROR) {
	Tcl_AddErrorInfo(interp,
		"\n    (\"package unknown\" script)");
	return result;
    }
    Tcl_ResetResult(interp);

    /*
     * pkgPtr may now be invalid, so refresh it.
     */

    reqPtr->pkgPtr = FindPackage(interp, name);
    Tcl_NRAddCallback(interp,
	    SelectPackage, reqPtr, INT2PTR(reqc), (void *) reqv,
	    PkgRequireCoreFinal);
    return TCL_OK;
}

static int
PkgRequireCoreFinal(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    Require *reqPtr = data[0];
    int reqc = PTR2INT(data[1]), satisfies;
    Tcl_Obj **const reqv = data[2];
    char *pkgVersionI;
    void *clientDataPtr = reqPtr->clientDataPtr;
    const char *name = reqPtr->name; /* Name of desired package. */

    if (reqPtr->pkgPtr->version == NULL) {
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"can't find package %s", name));
	Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "UNFOUND", NULL);
	AddRequirementsToResult(interp, reqc, reqv);
	return TCL_ERROR;
    }

	*ptr = reqPtr->pkgPtr->clientData;
    }
    Tcl_SetObjResult(interp, reqPtr->pkgPtr->version);
    return TCL_OK;
}

static int
PkgRequireCoreCleanup(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    Tcl_Free(data[0]);
    return result;
}


static int
SelectPackage(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    PkgAvail *availPtr, *bestPtr, *bestStablePtr;
    char *availVersion, *bestVersion, *bestStableVersion;
				/* Internal rep. of versions */
    int availStable, satisfies;
    Require *reqPtr = data[0];
    int reqc = PTR2INT(data[1]);
    Tcl_Obj **const reqv = data[2];

		name, (char *) pkgPtr->clientData, name));
	AddRequirementsToResult(interp, reqc, reqv);
	Tcl_SetErrorCode(interp, "TCL", "PACKAGE", "CIRCULARITY", NULL);
	return TCL_ERROR;
    }

    /*
     * The package isn't yet present. Search the list of available versions
     * and invoke the script for the best available version. We are actually
     * locating the best, and the best stable version. One of them is then
     * chosen based on the selection mode.
     */

    bestPtr = NULL;
    bestStablePtr = NULL;
    bestVersion = NULL;
    bestStableVersion = NULL;

    for (availPtr = pkgPtr->availPtr; availPtr != NULL;
	    availPtr = availPtr->nextPtr) {
	if (CheckVersionAndConvert(interp, availPtr->version,
		&availVersion, &availStable) != TCL_OK) {
	    /*
	     * The provided version number has invalid syntax. This should not
	     * happen. This should have been caught by the 'package ifneeded'
	     * registering the package.
	     */

	    continue;
	}

	/*
	 * Check satisfaction of requirements before considering the current
	 * version further.
	 */

	if (reqc > 0) {
	    satisfies = SomeRequirementSatisfied(availVersion, reqc, reqv);
	    if (!satisfies) {
		Tcl_Free(availVersion);
		availVersion = NULL;
		continue;
	    }

	     */

	    if (res > 0) {
		/*
		 * The version of the package sought is better than the
		 * currently selected version.
		 */

		Tcl_Free(bestVersion);
		bestVersion = NULL;
		goto newbest;
	    }
	} else {
	newbest:
	    /*
	     * We have found a version which is better than our max.
	     */

	    bestPtr = availPtr;
	    CheckVersionAndConvert(interp, bestPtr->version, &bestVersion, NULL);
	}

	if (!availStable) {
	    Tcl_Free(availVersion);
	    availVersion = NULL;
	    continue;
	}

	if (bestStablePtr != NULL) {
	    int res = CompareVersions(availVersion, bestStableVersion, NULL);

	    /*
	     * Note: Used internal reps in the comparison!
	     */

	    if (res > 0) {
		/*
		 * This stable version of the package sought is better than
		 * the currently selected stable version.
		 */

		Tcl_Free(bestStableVersion);
		bestStableVersion = NULL;
		goto newstable;
	    }
	} else {
	newstable:
	    /*
	     * We have found a stable version which is better than our max
	     * stable.
	     */

	    bestStablePtr = availPtr;
	    CheckVersionAndConvert(interp, bestStablePtr->version,
		    &bestStableVersion, NULL);
	}

	Tcl_Free(availVersion);
	availVersion = NULL;
    } /* end for */

    /*

    if (bestStableVersion != NULL) {
	Tcl_Free(bestStableVersion);
	bestStableVersion = NULL;
    }

    /*
     * Now choose a version among the two best. For 'latest' we simply take
     * (actually keep) the best. For 'stable' we take the best stable, if
     * there is any, or the best if there is nothing stable.
     */

    if ((iPtr->packagePrefer == PKG_PREFER_STABLE)
	    && (bestStablePtr != NULL)) {
	bestPtr = bestStablePtr;
    }

    if (bestPtr == NULL) {
	Tcl_NRAddCallback(interp,
		data[3], reqPtr, INT2PTR(reqc), (void *)reqv, NULL);
    } else {
	/*
	 * We found an ifneeded script for the package. Be careful while
	 * executing it: this could cause reentrancy, so (a) protect the
	 * script itself from deletion and (b) don't assume that bestPtr will
	 * still exist when the script completes.
	 */

	char *versionToProvide = bestPtr->version;
	PkgFiles *pkgFiles;
	PkgName *pkgName;

	Tcl_Preserve(versionToProvide);
	pkgPtr->clientData = versionToProvide;

	pkgFiles = TclInitPkgFiles(interp);

	/*
	 * Push "ifneeded" package name in "tclPkgFiles" assocdata.
	 */

	pkgName = Tcl_Alloc(sizeof(PkgName) + strlen(name));
	pkgName->nextPtr = pkgFiles->names;
	strcpy(pkgName->name, name);
	pkgFiles->names = pkgName;
	if (bestPtr->pkgIndex) {
	    TclPkgFileSeen(interp, bestPtr->pkgIndex);
	}
	reqPtr->versionToProvide = versionToProvide;
	Tcl_NRAddCallback(interp,
		SelectPackageFinal, reqPtr, INT2PTR(reqc), (void *)reqv,
		data[3]);
	Tcl_NREvalObj(interp, Tcl_NewStringObj(bestPtr->script, -1),
		TCL_EVAL_GLOBAL);
    }
    return TCL_OK;
}

static int
SelectPackageFinal(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    Require *reqPtr = data[0];
    int reqc = PTR2INT(data[1]);
    Tcl_Obj **const reqv = data[2];
    const char *name = reqPtr->name;
    char *versionToProvide = reqPtr->versionToProvide;

    /*
     * Pop the "ifneeded" package name from "tclPkgFiles" assocdata
     */

    PkgFiles *pkgFiles = Tcl_GetAssocData(interp, "tclPkgFiles", NULL);
    PkgName *pkgName = pkgFiles->names;
    pkgFiles->names = pkgName->nextPtr;
    Tcl_Free(pkgName);

    reqPtr->pkgPtr = FindPackage(interp, name);
    if (result == TCL_OK) {

		"\n    (\"package ifneeded %s %s\" script)",
		name, versionToProvide));
    }
    Tcl_Release(versionToProvide);

    if (result != TCL_OK) {
	/*
	 * Take a non-TCL_OK code from the script as an indication the package
	 * wasn't loaded properly, so the package system should not remember
	 * an improper load.
	 *
	 * This is consistent with our returning NULL. If we're not willing to
	 * tell our caller we got a particular version, we shouldn't store
	 * that version for telling future callers either.

	 */

	if (reqPtr->pkgPtr->version != NULL) {
	    Tcl_DecrRefCount(reqPtr->pkgPtr->version);
	    reqPtr->pkgPtr->version = NULL;
	}
	reqPtr->pkgPtr->clientData = NULL;
	return result;
    }

    Tcl_NRAddCallback(interp,
	    data[3], reqPtr, INT2PTR(reqc), (void *) reqv, NULL);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_PkgPresent / Tcl_PkgPresentEx --

	if (objc != 3) {
	    Tcl_WrongNumArgs(interp, 2, objv, "package");
	    return TCL_ERROR;
	}
	pkgFiles = (PkgFiles *) Tcl_GetAssocData(interp, "tclPkgFiles", NULL);
	if (pkgFiles) {
	    Tcl_HashEntry *entry = Tcl_FindHashEntry(&pkgFiles->table,
		    TclGetString(objv[2]));

	    if (entry) {
		Tcl_SetObjResult(interp, (Tcl_Obj *)Tcl_GetHashValue(entry));
	    }
	}
	break;
    }
    case PKG_FORGET: {
	const char *keyString;
	PkgFiles *pkgFiles = (PkgFiles *)
		Tcl_GetAssocData(interp, "tclPkgFiles", NULL);

	for (i = 2; i < objc; i++) {
	    keyString = TclGetString(objv[i]);
	    if (pkgFiles) {
		hPtr = Tcl_FindHashEntry(&pkgFiles->table, keyString);
		if (hPtr) {
		    Tcl_Obj *obj = Tcl_GetHashValue(hPtr);

		Tcl_Free(argv3i);
		return TCL_ERROR;
	    }

	    res = CompareVersions(avi, argv3i, NULL);
	    Tcl_Free(avi);

	    if (res == 0) {
		if (objc == 4) {
		    Tcl_Free(argv3i);
		    Tcl_SetObjResult(interp,
			    Tcl_NewStringObj(availPtr->script, -1));
		    return TCL_OK;
		}
		Tcl_EventuallyFree(availPtr->script, TCL_DYNAMIC);

	    Tcl_IncrRefCount(objv[3]);

	    objvListPtr = Tcl_NewListObj(0, NULL);
	    Tcl_IncrRefCount(objvListPtr);
	    Tcl_ListObjAppendElement(interp, objvListPtr, ov);
	    Tcl_ListObjGetElements(interp, objvListPtr, &newobjc, &newObjvPtr);

	    Tcl_NRAddCallback(interp,
		    TclNRPackageObjCmdCleanup, objv[3], objvListPtr, NULL,NULL);
	    Tcl_NRAddCallback(interp,
		    PkgRequireCore, (void *) argv3, INT2PTR(newobjc),
		    newObjvPtr, NULL);
	    return TCL_OK;
	} else {
	    int i, newobjc = objc-3;
	    Tcl_Obj *const *newobjv = objv + 3;

	    if (CheckAllRequirements(interp, objc-3, objv+3) != TCL_OK) {
		return TCL_ERROR;
	    }
	    objvListPtr = Tcl_NewListObj(0, NULL);
	    Tcl_IncrRefCount(objvListPtr);
	    Tcl_IncrRefCount(objv[2]);
	    for (i = 0; i < newobjc; i++) {

		/*
		 * Tcl_Obj structures may have come from another interpreter,
		 * so duplicate them.
		 */

		Tcl_ListObjAppendElement(interp, objvListPtr,
			Tcl_DuplicateObj(newobjv[i]));
	    }
	    Tcl_ListObjGetElements(interp, objvListPtr, &newobjc, &newObjvPtr);
	    Tcl_NRAddCallback(interp,
		    TclNRPackageObjCmdCleanup, objv[2], objvListPtr, NULL,NULL);
	    Tcl_NRAddCallback(interp,
		    PkgRequireCore, (void *) argv2, INT2PTR(newobjc),
		    newObjvPtr, NULL);
	    return TCL_OK;
	}
	break;
    case PKG_UNKNOWN: {
	size_t length;

	if (objc == 2) {

    default:
	Tcl_Panic("Tcl_PackageObjCmd: bad option index to pkgOptions");
    }
    return TCL_OK;
}

static int
TclNRPackageObjCmdCleanup(
    ClientData data[],
    Tcl_Interp *interp,
    int result)
{
    TclDecrRefCount((Tcl_Obj *) data[0]);
    TclDecrRefCount((Tcl_Obj *) data[1]);
    return result;
}

/*
 *----------------------------------------------------------------------
 *
 * FindPackage --

}

/*
 *---------------------------------------------------------------------------
 *
 * TclStringReplace --
 *
 *	Implements the inner engine of the [string replace] and
 *	[string insert] commands.
 *
 *	The result is a concatenation of a prefix from objPtr, characters
 *	0 through first-1, the insertPtr string value, and a suffix from
 *	objPtr, characters from first + count to the end. The effect is as if
 *	the inner substring of characters first through first+count-1 are
 *	removed and replaced with insertPtr. If insertPtr is NULL, it is
 *	treated as an empty string. When passed the flag TCL_STRING_IN_PLACE,

	} else {
	    return Tcl_DuplicateObj(objPtr);
	}
    }

    /*
     * The caller very likely had to call Tcl_GetCharLength() or similar
     * to be able to process index values.  This means it is likely that
     * objPtr is either a proper "bytearray" or a "string" or else it has
     * a known and short string rep.
     */

    if (TclIsPureByteArray(objPtr)) {
	size_t numBytes = 0;
	unsigned char *bytes = TclGetByteArrayFromObj(objPtr, &numBytes);

    Tcl_InitStringRep, /* 637 */
    Tcl_FetchIntRep, /* 638 */
    Tcl_StoreIntRep, /* 639 */
    Tcl_HasStringRep, /* 640 */
    Tcl_IncrRefCount, /* 641 */
    Tcl_DecrRefCount, /* 642 */
    Tcl_IsShared, /* 643 */
    Tcl_LinkArray, /* 644 */
};

/* !END!: Do not edit above this line. */

static int		TestgetvarfullnameCmd(
			    void *dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const objv[]);
static int		TestinterpdeleteCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);
static int		TestlinkCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);
static int		TestlinkarrayCmd(void *dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		TestlocaleCmd(void *dummy,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
static int		TestmainthreadCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);
static int		TestsetmainloopCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);

    Tcl_CreateCommand(interp, "testgetplatform", TestgetplatformCmd,
	    NULL, NULL);
    Tcl_CreateObjCommand(interp, "testgetvarfullname",
	    TestgetvarfullnameCmd, NULL, NULL);
    Tcl_CreateCommand(interp, "testinterpdelete", TestinterpdeleteCmd,
	    NULL, NULL);
    Tcl_CreateCommand(interp, "testlink", TestlinkCmd, NULL, NULL);
    Tcl_CreateObjCommand(interp, "testlinkarray", TestlinkarrayCmd, NULL, NULL);
    Tcl_CreateObjCommand(interp, "testlocale", TestlocaleCmd, NULL,
	    NULL);
    Tcl_CreateCommand(interp, "testpanic", TestpanicCmd, NULL, NULL);
    Tcl_CreateObjCommand(interp, "testparseargs", TestparseargsCmd,NULL,NULL);
    Tcl_CreateObjCommand(interp, "testparser", TestparserObjCmd,
	    NULL, NULL);
    Tcl_CreateObjCommand(interp, "testparsevar", TestparsevarObjCmd,

    } else {
	Tcl_AppendResult(interp, "bad option \"", argv[1],
		"\": should be create, delete, get, set, or update", NULL);
	return TCL_ERROR;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TestlinkarrayCmd --
 *
 *      This function is invoked to process the "testlinkarray" Tcl command.
 *      It is used to test the 'Tcl_LinkArray' function.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *	Creates, deletes, and invokes variable links.
 *
 *----------------------------------------------------------------------
 */

static int
TestlinkarrayCmd(
    ClientData dummy,           /* Not used. */
    Tcl_Interp *interp,         /* Current interpreter. */
    int objc,                   /* Number of arguments. */
    Tcl_Obj *const objv[])      /* Argument objects. */
{
    static const char *LinkOption[] = {
        "update", "remove", "create", NULL
    };
    enum LinkOption { LINK_UPDATE, LINK_REMOVE, LINK_CREATE };
    static const char *LinkType[] = {
	"char", "uchar", "short", "ushort", "int", "uint", "long", "ulong",
	"wide", "uwide", "float", "double", "string", "char*", "binary", NULL
    };
    /* all values after TCL_LINK_CHARS_ARRAY are used as arrays (see below) */
    static int LinkTypes[] = {
	TCL_LINK_CHAR, TCL_LINK_UCHAR,
	TCL_LINK_SHORT, TCL_LINK_USHORT, TCL_LINK_INT, TCL_LINK_UINT,
	TCL_LINK_LONG, TCL_LINK_ULONG, TCL_LINK_WIDE_INT, TCL_LINK_WIDE_UINT,
	TCL_LINK_FLOAT, TCL_LINK_DOUBLE, TCL_LINK_STRING, TCL_LINK_CHARS,
	TCL_LINK_BINARY
    };
    int optionIndex, typeIndex, readonly, i, size, length;
    char *name, *arg;
    long addr;                  /* Wrong on Windows, but that's MS's fault for
                                 * not supporting <stdint.h> correctly. They
                                 * can suffer the warnings; the rest of us
                                 * shouldn't have to! */

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "option args");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], LinkOption, "option", 0,
	    &optionIndex) != TCL_OK) {
	return TCL_ERROR;
    }
    switch ((enum LinkOption) optionIndex) {
    case LINK_UPDATE:
	for (i=2; i<objc; i++) {
	    Tcl_UpdateLinkedVar(interp, Tcl_GetString(objv[i]));
	}
	return TCL_OK;
    case LINK_REMOVE:
	for (i=2; i<objc; i++) {
	    Tcl_UnlinkVar(interp, Tcl_GetString(objv[i]));
	}
	return TCL_OK;
    case LINK_CREATE:
	if (objc < 4) {
	    goto wrongArgs;
	}
	readonly = 0;
	i = 2;

	/*
	 * test on switch -r...
	 */

	arg = Tcl_GetStringFromObj(objv[i], &length);
	if (length < 2) {
	    goto wrongArgs;
	}
	if (arg[0] == '-') {
	    if (arg[1] != 'r') {
		goto wrongArgs;
	    }
	    readonly = TCL_LINK_READ_ONLY;
	    i++;
	}
	if (Tcl_GetIndexFromObj(interp, objv[i++], LinkType, "type", 0,
 		&typeIndex) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (Tcl_GetIntFromObj(interp, objv[i++], &size) == TCL_ERROR) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("wrong size value", -1));
	    return TCL_ERROR;
	}
	name = Tcl_GetString(objv[i++]);

	/*
	 * If no address is given request one in the underlying function
	 */

	if (i < objc) {
	    if (Tcl_GetLongFromObj(interp, objv[i], &addr) == TCL_ERROR) {
 		Tcl_SetObjResult(interp, Tcl_NewStringObj(
			"wrong address value", -1));
		return TCL_ERROR;
	    }
	} else {
	    addr = 0;
	}
	return Tcl_LinkArray(interp, name, (void *) addr,
		LinkTypes[typeIndex] | readonly, size);
    }
    return TCL_OK;

  wrongArgs:
    Tcl_WrongNumArgs(interp, 2, objv, "?-readonly? type size name ?address?");
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * TestlocaleCmd --
 *
 *	This procedure implements the "testlocale" command.  It is used

	    packageName, version, exact, &stubsPtr);

    if (actualVersion == NULL) {
	return NULL;
    }
    if (stubsPtr == NULL) {
	errMsg = "missing stub table pointer";
    } else if (stubsPtr->tclBN_epoch() != epoch) {
	errMsg = "epoch number mismatch";
    } else if (stubsPtr->tclBN_revision() != revision) {
	errMsg = "requires a later revision";
    } else {
	tclTomMathStubsPtr = stubsPtr;
	return actualVersion;
    }
    tclStubsPtr->tcl_ResetResult(interp);
    tclStubsPtr->tcl_AppendResult(interp, "Error loading ", packageName,

	/*
	 * To keep badly formed Utf strings from getting inflated by the
	 * conversion (thereby causing a segfault), only copy the upper case
	 * char to dst if its size is <= the original char.
	 */

	if ((len < TclUtfCount(upChar)) || ((upChar & 0xF800) == 0xD800)) {
	    memmove(dst, src, len);
	    dst += len;
	} else {
	    dst += Tcl_UniCharToUtf(upChar, dst);
	}
	src += len;
    }
    *dst = '\0';

	/*
	 * To keep badly formed Utf strings from getting inflated by the
	 * conversion (thereby causing a segfault), only copy the lower case
	 * char to dst if its size is <= the original char.
	 */

	if ((len < TclUtfCount(lowChar)) || ((lowChar & 0xF800) == 0xD800)) {
	    memmove(dst, src, len);
	    dst += len;
	} else {
	    dst += Tcl_UniCharToUtf(lowChar, dst);
	}
	src += len;
    }
    *dst = '\0';

	    /* Combine surrogates */
	    titleChar = (((titleChar & 0x3ff) << 10) | (ch & 0x3ff)) + 0x10000;
	}
#endif
	titleChar = Tcl_UniCharToTitle(titleChar);

	if ((len < TclUtfCount(titleChar)) || ((titleChar & 0xF800) == 0xD800)) {
	    memmove(dst, src, len);
	    dst += len;
	} else {
	    dst += Tcl_UniCharToUtf(titleChar, dst);
	}
	src += len;
    }
    while (*src) {

#endif
	/* Special exception for Georgian Asomtavruli chars, no titlecase. */
	if ((unsigned)(lowChar - 0x1C90) >= 0x30) {
	    lowChar = Tcl_UniCharToLower(lowChar);
	}

	if ((len < TclUtfCount(lowChar)) || ((lowChar & 0xF800) == 0xD800)) {
	    memmove(dst, src, len);
	    dst += len;
	} else {
	    dst += Tcl_UniCharToUtf(lowChar, dst);
	}
	src += len;
    }
    *dst = '\0';

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]

# Used for constraining memory leak tests
testConstraint memory [llength [info commands memory]]
testConstraint testobj [llength [info commands testobj]]

test cmdIL-1.1 {Tcl_LsortObjCmd procedure} -returnCodes error -body {
    lsort
} -result {wrong # args: should be "lsort ?-option value ...? list"}
test cmdIL-1.2 {Tcl_LsortObjCmd procedure} -returnCodes error -body {
    lsort -foo {1 3 2 5}
} -result {bad option "-foo": must be -ascii, -command, -decreasing, -dictionary, -increasing, -index, -indices, -integer, -nocase, -real, -stride, or -unique}
test cmdIL-1.3 {Tcl_LsortObjCmd procedure, default options} {

} -constraints testobj -body {
    lreverse [K $y [unset y]]
    lindex $x 0
} -cleanup {
    unset -nocomplain x y
    rename K {}
} -result 1

test cmdIL-8.1 {lremove command: error path} -returnCodes error -body {
    lremove
} -result {wrong # args: should be "lremove list ?index ...?"}
test cmdIL-8.2 {lremove command: error path} -returnCodes error -body {
    lremove {{}{}}
} -result {list element in braces followed by "{}" instead of space}
test cmdIL-8.3 {lremove command: error path} -returnCodes error -body {
    lremove {a b c} gorp
} -result {bad index "gorp": must be integer?[+-]integer? or end?[+-]integer?}
test cmdIL-8.4 {lremove command: no indices} -body {
    lremove {a b c}
} -result {a b c}
test cmdIL-8.5 {lremove command: before start} -body {
    lremove {a b c} -1
} -result {a b c}
test cmdIL-8.6 {lremove command: after end} -body {
    lremove {a b c} 3
} -result {a b c}
test cmdIL-8.7 {lremove command} -body {
    lremove {a b c} 0
} -result {b c}
test cmdIL-8.8 {lremove command} -body {
    lremove {a b c} 1
} -result {a c}
test cmdIL-8.9 {lremove command} -body {
    lremove {a b c} end
} -result {a b}
test cmdIL-8.10 {lremove command} -body {
    lremove {a b c} end-1
} -result {a c}
test cmdIL-8.11 {lremove command} -body {
    lremove {a b c d e} 1 3
} -result {a c e}
test cmdIL-8.12 {lremove command} -body {
    lremove {a b c d e} 3 1
} -result {a c e}
test cmdIL-8.13 {lremove command: same index twice} -body {
    lremove {a b c d e} 2 2
} -result {a b d e}
test cmdIL-8.14 {lremove command: same index twice} -body {
    lremove {a b c d e} 3 end-1
} -result {a b c e}
test cmdIL-8.15 {lremove command: many indices} -body {
    lremove {a b c d e} 1 3 1 4 0
} -result {c}

# This belongs in info test, but adding tests there breaks tests
# that compute source file line numbers.
test info-20.6 {Bug 3587651} -setup {
    namespace eval my {namespace eval tcl {namespace eval mathfunc {
        proc demo x {return 42}
    }}}} -body {    namespace eval my {expr {"demo" in [info functions]}}} -cleanup {
    namespace delete my
} -result 1


# cleanup
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl
# End:

test coroutine-7.5 {return codes} {
    set result {}
    foreach code {0 1 2 3 4 5} {
	lappend result [catch {coroutine demo return -level 0 -code $code}]
    }
    set result
} {0 1 2 3 4 5}
test coroutine-7.6 {Early yield crashes} -setup {
    set i [interp create]
} -body {
    # Force into a child interpreter [bug 60559fd4a6]
    $i eval {
	proc foo args {}
	trace add execution foo enter {catch yield}
	coroutine demo foo
	rename foo {}
	return ok
    }
} -cleanup {
    interp delete $i
} -result ok
test coroutine-7.7 {Bug 2486550} -setup {
    set i [interp create]
    $i hide yield
} -body {
    # Force into a child interpreter [bug 60559fd4a6]
    $i eval {
	coroutine demo interp invokehidden {} yield ok
    }
} -cleanup {
    $i eval demo
    interp delete $i
} -result ok
test coroutine-7.8 {yieldto context nuke: Bug a90d9331bc} -setup {
    namespace eval cotest {}
    set ::result ""
} -body {
    proc cotest::body {} {
	lappend ::result a

    }
    slave eval demo
    set result [slave eval {set ::result}]

    interp delete slave
    set result
} -result {inject-executed}



# cleanup
unset lambda
::tcltest::cleanupTests

return

# Local Variables:
# mode: tcl
# End:

test dict-25.1 {compiled dict update with low-refcount values [Bug d553228d9f]} {
    # Test crashes on failure
    apply {{} {
	lassign {} item
	dict update item item item two two {}
    }}
} {}

set dict dict;			# Used to force interpretation, not compilation
test dict-26.1 {dict getdef command} -body {
    dict getdef {a b} a c
} -result b
test dict-26.2 {dict getdef command} -body {
    dict getdef {a b} b c
} -result c
test dict-26.3 {dict getdef command} -body {
    dict getdef {a {b c}} a b d
} -result c
test dict-26.4 {dict getdef command} -body {
    dict getdef {a {b c}} a c d
} -result d
test dict-26.5 {dict getdef command} -body {
    dict getdef {a {b c}} b c d
} -result d
test dict-26.6 {dict getdef command} -returnCodes error -body {
    dict getdef {a {b c d}} a b d
} -result {missing value to go with key}
test dict-26.7 {dict getdef command} -returnCodes error -body {
    dict getdef
} -result {wrong # args: should be "dict getdef dictionary ?key ...? key default"}
test dict-26.8 {dict getdef command} -returnCodes error -body {
    dict getdef {}
} -result {wrong # args: should be "dict getdef dictionary ?key ...? key default"}
test dict-26.9 {dict getdef command} -returnCodes error -body {
    dict getdef {} {}
} -result {wrong # args: should be "dict getdef dictionary ?key ...? key default"}
test dict-26.10 {dict getdef command} -returnCodes error -body {
    dict getdef {a b c} d e
} -result {missing value to go with key}
test dict-26.11 {dict getdef command} -body {
    $dict getdef {a b} a c
} -result b
test dict-26.12 {dict getdef command} -body {
    $dict getdef {a b} b c
} -result c
test dict-26.13 {dict getdef command} -body {
    $dict getdef {a {b c}} a b d
} -result c
test dict-26.14 {dict getdef command} -body {
    $dict getdef {a {b c}} a c d
} -result d
test dict-26.15 {dict getdef command} -body {
    $dict getdef {a {b c}} b c d
} -result d
test dict-26.16 {dict getdef command} -returnCodes error -body {
    $dict getdef {a {b c d}} a b d
} -result {missing value to go with key}
test dict-26.17 {dict getdef command} -returnCodes error -body {
    $dict getdef {a b c} d e
} -result {missing value to go with key}

test dict-27.1 {dict getwithdefault command} -body {
    dict getwithdefault {a b} a c
} -result b
test dict-27.2 {dict getwithdefault command} -body {
    dict getwithdefault {a b} b c
} -result c
test dict-27.3 {dict getwithdefault command} -body {
    dict getwithdefault {a {b c}} a b d
} -result c
test dict-27.4 {dict getwithdefault command} -body {
    dict getwithdefault {a {b c}} a c d
} -result d
test dict-27.5 {dict getwithdefault command} -body {
    dict getwithdefault {a {b c}} b c d
} -result d
test dict-27.6 {dict getwithdefault command} -returnCodes error -body {
    dict getwithdefault {a {b c d}} a b d
} -result {missing value to go with key}
test dict-27.7 {dict getwithdefault command} -returnCodes error -body {
    dict getwithdefault
} -result {wrong # args: should be "dict getwithdefault dictionary ?key ...? key default"}
test dict-27.8 {dict getwithdefault command} -returnCodes error -body {
    dict getwithdefault {}
} -result {wrong # args: should be "dict getwithdefault dictionary ?key ...? key default"}
test dict-27.9 {dict getwithdefault command} -returnCodes error -body {
    dict getwithdefault {} {}
} -result {wrong # args: should be "dict getwithdefault dictionary ?key ...? key default"}
test dict-26.10 {dict getdef command} -returnCodes error -body {
    dict getwithdefault {a b c} d e
} -result {missing value to go with key}
test dict-27.11 {dict getwithdefault command} -body {
    $dict getwithdefault {a b} a c
} -result b
test dict-27.12 {dict getwithdefault command} -body {
    $dict getwithdefault {a b} b c
} -result c
test dict-27.13 {dict getwithdefault command} -body {
    $dict getwithdefault {a {b c}} a b d
} -result c
test dict-27.14 {dict getwithdefault command} -body {
    $dict getwithdefault {a {b c}} a c d
} -result d
test dict-27.15 {dict getwithdefault command} -body {
    $dict getwithdefault {a {b c}} b c d
} -result d
test dict-27.16 {dict getwithdefault command} -returnCodes error -body {
    $dict getwithdefault {a {b c d}} a b d
} -result {missing value to go with key}
test dict-26.17 {dict getdef command} -returnCodes error -body {
    $dict getwithdefault {a b c} d e
} -result {missing value to go with key}

# cleanup
::tcltest::cleanupTests
return

# Local Variables:
# mode: tcl

        ::httpTest::LogRecord $txt
        ::httpTest::Puts $txt
    } elseif {$::httpTest::testOptions(-verbose) > 1} {
        ::httpTest::Puts $txt
    }
    return
}
# The http::Log routine above needs the variable ::httpTest::testOptions
# Set up to destroy it when that variable goes away.
trace add variable ::httpTest::testOptions unset {apply {args {
    proc ::http::Log args {}
}}}

# Called by http::Log (the "testing" version) to record logs for later analysis.

proc httpTest::LogRecord {txt} {
    variable testResults

    set pos [string first ^ $txt]

test info-22.8 {info frame, basic trace} -match glob -body {
    join [lrange [etrace] 0 2] \n
} -result {* {type source line 730 file info.test cmd {info frame $level} proc ::etrace level 0}
* {type source line 765 file info.test cmd etrace proc ::tcltest::RunTest}
* {type source line * file tcltest* cmd {uplevel 1 $script} proc ::tcltest::RunTest}}
unset -nocomplain msg










## The line 1967 is off by 5 from the true value of 1972. This is a knownBug, see testcase 30.0
test info-23.0 {eval'd info frame} -constraints {!singleTestInterp} -body {
    list [i eval {info frame}] [i eval {eval {info frame}}]
} -setup {interp create i} -cleanup {interp delete i} -result {1 2}
test info-23.1 {eval'd info frame, semi-dynamic} -constraints {!singleTestInterp} -body {
    i eval {eval info frame}

} -setup {interp create i} -cleanup {interp delete i} -result 2
test info-23.2 {eval'd info frame, dynamic} -constraints {!singleTestInterp} -body {
    i eval {	set script {info frame}
		eval $script}
} -setup {interp create i} -cleanup {interp delete i} -result 2
test info-23.3 {eval'd info frame, literal} -match glob -body {
    eval {
	info frame 0
    }
} -result {type source line 793 file * cmd {info frame 0} proc ::tcltest::RunTest}
test info-23.4 {eval'd info frame, semi-dynamic} {
    eval info frame 0

    set chan [open [info script] r]
} -body {
    chan close $chan write
} -cleanup {
    close $chan
} -returnCodes error -result "Half-close of write-side not possible, side not opened or already closed"

proc expectedOpts {got extra} {
    set basicOpts {
	-blocking -buffering -buffersize -encoding -eofchar -translation
    }
    set opts [list {*}$basicOpts {*}$extra]
    lset opts end [string cat "or " [lindex $opts end]]
    return [format {bad option "%s": should be one of %s} $got [join $opts ", "]]
}
test iocmd-8.1 {fconfigure command} -returnCodes error -body {
    fconfigure
} -result {wrong # args: should be "fconfigure channelId ?-option value ...?"}
test iocmd-8.2 {fconfigure command} -returnCodes error -body {
    fconfigure a b c d e f
} -result {wrong # args: should be "fconfigure channelId ?-option value ...?"}
test iocmd-8.3 {fconfigure command} -returnCodes error -body {
    fconfigure a b
} -result {can not find channel named "a"}
test iocmd-8.4 {fconfigure command} -setup {
    file delete $path(test1)
    set f1 [open $path(test1) w]
} -body {
    fconfigure $f1 froboz
} -returnCodes error -cleanup {
    close $f1
} -result [expectedOpts "froboz" {}]

test iocmd-8.5 {fconfigure command} -returnCodes error -body {
    fconfigure stdin -buffering froboz
} -result {bad value for -buffering: must be one of full, line, or none}
test iocmd-8.6 {fconfigure command} -returnCodes error -body {
    fconfigure stdin -translation froboz
} -result {bad value for -translation: must be one of auto, binary, cr, lf, crlf, or platform}
test iocmd-8.7 {fconfigure command} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    fconfigure $f1 -translation lf -eofchar {} -encoding unicode
    fconfigure $f1
} -cleanup {
    catch {close $f1}

} -result {-blocking 1 -buffering full -buffersize 4096 -encoding unicode -eofchar {} -translation lf}
test iocmd-8.8 {fconfigure command} -setup {
    file delete $path(test1)
    set x {}
} -body {
    set f1 [open $path(test1) w]
    fconfigure $f1 -translation lf -buffering line -buffersize 3030 \
		-eofchar {} -encoding unicode

    lappend x [fconfigure $f1 -buffering]
    lappend x [fconfigure $f1]
} -cleanup {
    catch {close $f1}

} -result {line {-blocking 1 -buffering line -buffersize 3030 -encoding unicode -eofchar {} -translation lf}}
test iocmd-8.9 {fconfigure command} -setup {
    file delete $path(test1)
} -body {
    set f1 [open $path(test1) w]
    fconfigure $f1 -translation binary -buffering none -buffersize 4040 \
		-eofchar {} -encoding binary
    fconfigure $f1
} -cleanup {
    catch {close $f1}

} -result {-blocking 1 -buffering none -buffersize 4040 -encoding binary -eofchar {} -translation lf}
test iocmd-8.10 {fconfigure command} -returnCodes error -body {
    fconfigure a b
} -result {can not find channel named "a"}
set path(fconfigure.dummy) [makeFile {} fconfigure.dummy]
test iocmd-8.11 {fconfigure command} -body {
    set chan [open $path(fconfigure.dummy) r]
    fconfigure $chan -froboz blarfo
} -returnCodes error -cleanup {
    catch {close $chan}
} -result [expectedOpts "-froboz" {}]

test iocmd-8.12 {fconfigure command} -body {
    set chan [open $path(fconfigure.dummy) r]
    fconfigure $chan -b blarfo
} -returnCodes error -cleanup {
    catch {close $chan}
} -result [expectedOpts "-b" {}]

test iocmd-8.13 {fconfigure command} -body {
    set chan [open $path(fconfigure.dummy) r]
    fconfigure $chan -buffer blarfo
} -returnCodes error -cleanup {
    catch {close $chan}
} -result [expectedOpts "-buffer" {}]

removeFile fconfigure.dummy
test iocmd-8.14 {fconfigure command} {
    fconfigure stdin -buffers
} 4096
test iocmd-8.15.1 {fconfigure command / tcp channel} -constraints {socket unixOrPc} -setup {
    set srv [socket -server iocmdSRV -myaddr 127.0.0.1 0]
    set port [lindex [fconfigure $srv -sockname] 2]
    proc iocmdSRV {sock ip port} {close $sock}
    set cli [socket 127.0.0.1 $port]
} -body {
    fconfigure $cli -blah
} -cleanup {
    close $cli
    close $srv
    unset cli srv port
    rename iocmdSRV {}
} -returnCodes error -result [expectedOpts "-blah" {-connecting -peername -sockname}]
test iocmd-8.16 {fconfigure command / tcp channel} -constraints socket -setup {
    set srv [socket -server iocmdSRV -myaddr 127.0.0.1 0]
    set port [lindex [fconfigure $srv -sockname] 2]
    proc iocmdSRV {sock ip port} {close $sock}
    set cli [socket 127.0.0.1 $port]
} -body {
    expr {[lindex [fconfigure $cli -peername] 2] == $port}

    # might fail if /dev/ttya is unavailable
    set tty [open /dev/ttya]
    fconfigure $tty -blah blih
} -cleanup {
    if {$tty ne ""} {
	close $tty
    }
} -returnCodes error -result [expectedOpts "-blah" {-closemode -inputmode -mode -queue -ttystatus -xchar}]
test iocmd-8.19 {fconfigure command / win tty channel} -constraints {nonPortable win} -setup {
    set tty ""
} -body {
    # might fail early if com1 is unavailable
    set tty [open com1]
    fconfigure $tty -blah blih
} -cleanup {
    if {$tty ne ""} {
	close $tty
    }
} -returnCodes error -result [expectedOpts "-blah" {-closemode -mode -handshake -pollinterval -sysbuffer -timeout -ttycontrol -xchar}]
test iocmd-8.20 {fconfigure command / win console channel} -constraints {nonPortable win} -setup {
    # I don't know how else to open the console, but this is non-portable
    set console stdin
} -body {
    fconfigure $console -blah blih
} -returnCodes error -result [expectedOpts "-blah" {-inputmode}]
# TODO: Test parsing of serial channel options (nonPortable, since requires an
# open channel to work with).

test iocmd-9.1 {eof command} {
    list [catch {eof} msg] $msg $::errorCode
} {1 {wrong # args: should be "eof channelId"} {TCL WRONGARGS}}
test iocmd-9.2 {eof command} {

    namespace import -force ::tcltest::*
}

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]

testConstraint testlink [llength [info commands testlink]]
testConstraint testlinkarray [llength [info commands testlinkarray]]

foreach i {int real bool string} {
    unset -nocomplain $i
}

test link-1.1 {reading C variables from Tcl} -constraints {testlink} -setup {
    testlink delete

} -result {1 {can't set "bool": variable must have boolean value} 1}
test link-2.5 {writing bad values into variables} -setup {
    testlink delete
} -constraints {testlink} -body {
    testlink set 43 1.23 4 - 56785678 64 250 30000 60000 0xbeefbabe 12321 32123 3.25 1231231234
    testlink create 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    list [catch {set wide gorp} msg] $msg $bool
} -result {1 {can't set "wide": variable must have wide integer value} 1}
test link-2.6 {writing C variables from Tcl} -constraints {testlink} -setup {
    testlink delete
} -body {
    testlink set 43 1.21 4 - 56785678 64 250 30000 60000 0xbaadbeef 12321 32123 3.25 1231231234
    testlink create 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    set int "+"
    set real "+"

    proc x {} {
	upvar wide y
	set y abc
    }
    testlink create 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    testlink set -4 16.3 1 {} 778899 {} {} {} {} {} {} {} {} {}
    list [catch x msg] $msg $wide
} -result {1 {can't set "y": variable must have wide integer value} 778899}

test link-8.1 {Tcl_UpdateLinkedVar procedure} {testlink} {
    proc x args {
	global x int real bool string wide
	lappend x $args $int $real $bool $string $wide
    }
    set x {}

} {}
test link-8.3 {Tcl_UpdateLinkedVar procedure, read-only variable} {testlink} {
    testlink create 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    list [catch {
	testlink update 47 {} {} {} {} {} {} {} {} {} {} {} {} {}
    } msg] $msg $int
} {0 {} 47}

test link-9.1 {linkarray usage messages} -returnCodes error -body {
    testlinkarray
} -result {wrong # args: should be "testlinkarray option args"}
test link-9.2 {linkarray usage messages} -returnCodes error -body {
    testlinkarray x
} -result {bad option "x": must be update, remove, or create}
test link-9.3 {linkarray usage messages} -body {
    testlinkarray update
} -result {}
test link-9.4 {linkarray usage messages} -body {
    testlinkarray remove
} -result {}
test link-9.5 {linkarray usage messages} -returnCodes error -body {
    testlinkarray create
} -result {wrong # args: should be "testlinkarray create ?-readonly? type size name ?address?"}
test link-9.6 {linkarray usage messages} -returnCodes error -body {
    testlinkarray create xx 1 my
} -result {bad type "xx": must be char, uchar, short, ushort, int, uint, long, ulong, wide, uwide, float, double, string, char*, or binary}
test link-9.7 {linkarray usage messages} -returnCodes error -body {
    testlinkarray create char* 0 my
} -result {wrong array size given}

test link-10.1 {linkarray char*} -setup {
    set mylist [list]
} -body {
    testlinkarray create char* 1 ::my(var)
    lappend mylist [set ::my(var) ""]
    catch {set ::my(var) x} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{} {can't set "::my(var)": wrong size of char* value}}
test link-10.2 {linkarray char*} -body {
    testlinkarray create char* 4 ::my(var)
    set ::my(var) x
    catch {set ::my(var) xyzz} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": wrong size of char* value}
test link-10.3 {linkarray char*} -body {
    testlinkarray create -r char* 4 ::my(var)
    catch {set ::my(var) x} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-11.1 {linkarray char} -setup {
    set mylist [list]
} -body {
    testlinkarray create char 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1234} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have char value} 120 {can't set "::my(var)": variable must have char value}}
test link-11.2 {linkarray char} -setup {
    set mylist [list]
} -body {
    testlinkarray create char 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-11.3 {linkarray char} -body {
    testlinkarray create -r char 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-12.1 {linkarray unsigned char} -setup {
    set mylist [list]
} -body {
    testlinkarray create uchar 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1234} msg
    lappend mylist $msg
    catch {set ::my(var) -1} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have unsigned char value} 120 {can't set "::my(var)": variable must have unsigned char value} {can't set "::my(var)": variable must have unsigned char value}}
test link-12.2 {linkarray unsigned char} -setup {
    set mylist [list]
} -body {
    testlinkarray create uchar 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-12.3 {linkarray unsigned char} -body {
    testlinkarray create -r uchar 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-13.1 {linkarray short} -setup {
    set mylist [list]
} -body {
    testlinkarray create short 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 123456} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have short value} 120 {can't set "::my(var)": variable must have short value}}
test link-13.2 {linkarray short} -setup {
    set mylist [list]
} -body {
    testlinkarray create short 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-13.3 {linkarray short} -body {
    testlinkarray create -r short 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-14.1 {linkarray unsigned short} -setup {
    set mylist [list]
} -body {
    testlinkarray create ushort 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 123456} msg
    lappend mylist $msg
    catch {set ::my(var) -1} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have unsigned short value} 120 {can't set "::my(var)": variable must have unsigned short value} {can't set "::my(var)": variable must have unsigned short value}}
test link-14.2 {linkarray unsigned short} -setup {
    set mylist [list]
} -body {
    testlinkarray create ushort 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-14.3 {linkarray unsigned short} -body {
    testlinkarray create -r ushort 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-15.1 {linkarray int} -setup {
    set mylist [list]
} -body {
    testlinkarray create int 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e3} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have integer value} 120 {can't set "::my(var)": variable must have integer value}}
test link-15.2 {linkarray int} -setup {
    set mylist [list]
} -body {
    testlinkarray create int 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-15.3 {linkarray int} -body {
    testlinkarray create -r int 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-16.1 {linkarray unsigned int} -setup {
    set mylist [list]
} -body {
    testlinkarray create uint 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} msg
    lappend mylist $msg
    catch {set ::my(var) -1} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain ::my
} -result {{can't set "::my(var)": variable must have unsigned int value} 120 {can't set "::my(var)": variable must have unsigned int value} {can't set "::my(var)": variable must have unsigned int value}}
test link-16.2 {linkarray unsigned int} -setup {
    set mylist [list]
} -body {
    testlinkarray create uint 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain ::my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-16.3 {linkarray unsigned int} -body {
    testlinkarray create -r uint 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-17.1 {linkarray long} -setup {
    set mylist [list]
} -body {
    testlinkarray create long 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} msg
    lappend mylist $msg
} -match glob -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have * value} 120 {can't set "::my(var)": variable must have * value}}
test link-17.2 {linkarray long} -setup {
    set mylist [list]
} -body {
    testlinkarray create long 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-17.3 {linkarray long} -body {
    testlinkarray create -r long 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-18.1 {linkarray unsigned long} -setup {
    set mylist [list]
} -body {
    testlinkarray create ulong 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} msg
    lappend mylist $msg
} -match glob -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have unsigned * value} 120 {can't set "::my(var)": variable must have unsigned * value}}
test link-18.2 {linkarray unsigned long} -body {
    testlinkarray create ulong 1 ::my(var)
    set ::my(var) 120
    catch {set ::my(var) -1} msg
    return $msg
} -match glob -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": variable must have unsigned * value}
test link-18.3 {linkarray unsigned long} -setup {
    set mylist [list]
} -body {
    testlinkarray create ulong 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-18.4 {linkarray unsigned long} -body {
    testlinkarray create -r ulong 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-19.1 {linkarray wide} -setup {
    set mylist [list]
} -body {
    testlinkarray create wide 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} msg
    lappend mylist $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have wide integer value} 120 {can't set "::my(var)": variable must have wide integer value}}
test link-19.2 {linkarray wide} -setup {
    set mylist [list]
} -body {
    testlinkarray create wide 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-19.3 {linkarray wide} -body {
    testlinkarray create -r wide 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-20.1 {linkarray unsigned wide} -setup {
    set mylist [list]
} -body {
    testlinkarray create uwide 1 ::my(var)
    catch {set ::my(var) x} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} msg
    lappend mylist $msg
    lappend mylist [set ::my(var) 0xbabed00dbabed00d]
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": variable must have unsigned wide int value} 120 {can't set "::my(var)": variable must have unsigned wide int value} 0xbabed00dbabed00d}
test link-20.2 {linkarray unsigned wide} -body {
    testlinkarray create uwide 1 ::my(var)
    set ::my(var) 120
    catch {set ::my(var) -1} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": variable must have unsigned wide int value}
test link-20.3 {linkarray unsigned wide} -setup {
    set mylist [list]
} -body {
    testlinkarray create uwide 4 ::my(var)
    catch {set ::my(var) {1 2 3}} msg
    lappend mylist $msg
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong dimension} {1 2 3 4}}
test link-20.4 {linkarray unsigned wide} -body {
    testlinkarray create -r uwide 2 ::my(var)
    catch {set ::my(var) {1 2}} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-21.1 {linkarray string} -setup {
    set mylist [list]
} -body {
    testlinkarray create string 1 ::my(var)
    lappend mylist [set ::my(var) ""]
    lappend mylist [set ::my(var) "xyz"]
    lappend mylist $::my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{} xyz xyz}
test link-21.2 {linkarray string} -body {
    testlinkarray create -r string 4 ::my(var)
    catch {set ::my(var) x} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

test link-22.1 {linkarray binary} -setup {
    set mylist [list]
} -body {
    testlinkarray create binary 1 ::my(var)
    set ::my(var) x
    catch {set ::my(var) xy} msg
    lappend mylist $msg
    lappend mylist $::my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong size of binary value} x}
test link-22.2 {linkarray binary} -setup {
    set mylist [list]
} -body {
    testlinkarray create binary 4 ::my(var)
    catch {set ::my(var) abc} msg
    lappend mylist $msg
    catch {set ::my(var) abcde} msg
    lappend mylist $msg
    set ::my(var) abcd
    lappend mylist $::my(var)
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {{can't set "::my(var)": wrong size of binary value} {can't set "::my(var)": wrong size of binary value} abcd}
test link-22.3 {linkarray binary} -body {
    testlinkarray create -r binary 4 ::my(var)
    catch {set ::my(var) xyzv} msg
    return $msg
} -cleanup {
    testlinkarray remove ::my(var)
    unset -nocomplain my
} -result {can't set "::my(var)": linked variable is read-only}

catch {testlink set 0 0 0 - 0 0 0 0 0 0 0 0 0 0}
catch {testlink delete}
foreach i {int real bool string wide} {
    unset -nocomplain $i
}

} -result {^(\d+) \1$} -match regexp
test oo-16.17 {OO: object introspection: creationid #500} -body {
    info object creationid nosuchobject
} -returnCodes error -result {nosuchobject does not refer to an object}
test oo-16.18 {OO: object introspection: creationid #500} -body {
    info object creationid
} -returnCodes error -result {wrong # args: should be "info object creationid objName"}
test oo-16.18.1 {OO: object introspection: creationid #500} -body {
    info object creationid oo::object gorp
} -returnCodes error -result {wrong # args: should be "info object creationid objName"}
test oo-16.19 {OO: object introspection: creationid #500} -setup {
    oo::class create cls
} -body {
    set id1 [info object creationid [set o1 [cls new]]]
    set id2 [info object creationid [set o2 [cls new]]]

    SampleSlot create sampleSlot
}] -body {
    list [info level] [sampleSlot -prepend g h i] \
	[sampleSlot contents] [sampleSlot ops]
} -cleanup [SampleSlotCleanup {
    rename sampleSlot {}
}] -result {0 {} {g h i a b c} {1 Resolve g 1 Resolve h 1 Resolve i 1 Get 1 Set {g h i a b c}}}
test oo-32.7 {TIP 516: slots - class test} -setup [SampleSlotSetup {
    SampleSlot create sampleSlot
}] -body {
    list [info level] [sampleSlot -remove c a] \
	[sampleSlot contents] [sampleSlot ops]
} -cleanup [SampleSlotCleanup {
    rename sampleSlot {}
}] -result {0 {} b {1 Resolve c 1 Resolve a 1 Get 1 Set b}}

    set pid [exec [interpreter] $path(exit) -1 &]
    lindex [tcl::process status -wait $pid] 1
} -match glob -result {1 {child killed: unknown signal} {CHILDKILLED * {unknown signal} {unknown signal}}} -cleanup {
    tcl::process purge
    tcl::process autopurge 1
}

removeFile $path(exit)
removeFile $path(sleep)

rename wait_for_file {}
rename signal_exit {}
::tcltest::cleanupTests
return

    interp alias {} run {} try
    set constraints {}
}


test string-1.1.$noComp {error conditions} {
    list [catch {run {string gorp a b}} msg] $msg
} {1 {unknown or ambiguous subcommand "gorp": must be bytelength, cat, compare, equal, first, index, insert, is, last, length, map, match, range, repeat, replace, reverse, tolower, totitle, toupper, trim, trimleft, trimright, wordend, or wordstart}}
test string-1.2.$noComp {error conditions} {
    list [catch {run {string}} msg] $msg
} {1 {wrong # args: should be "string subcommand ?arg ...?"}}
test stringComp-1.3.$noComp {error condition - undefined method during compile} {
    # We don't want this to complain about 'never' because it may never
    # be called, or string may get redefined.  This must compile OK.
    proc foo {str i} {

} \u1361ABC

test string-20.1.$noComp {string trimright errors} {
    list [catch {run {string trimright}} msg] $msg
} {1 {wrong # args: should be "string trimright string ?chars?"}}
test string-20.2.$noComp {string trimright errors} {
    list [catch {run {string trimg a}} msg] $msg
} {1 {unknown or ambiguous subcommand "trimg": must be bytelength, cat, compare, equal, first, index, insert, is, last, length, map, match, range, repeat, replace, reverse, tolower, totitle, toupper, trim, trimleft, trimright, wordend, or wordstart}}
test string-20.3.$noComp {string trimright} {
    run {string trimright "    XYZ      "}
} {    XYZ}
test string-20.4.$noComp {string trimright} {
    run {string trimright "   "}
} {}
test string-20.5.$noComp {string trimright} {

} 3
test string-21.14.$noComp {string wordend, unicode} {
    run {string wordend "\uc700\uc700 abc" 8}
} 6

test string-22.1.$noComp {string wordstart} {
    list [catch {run {string word a}} msg] $msg
} {1 {unknown or ambiguous subcommand "word": must be bytelength, cat, compare, equal, first, index, insert, is, last, length, map, match, range, repeat, replace, reverse, tolower, totitle, toupper, trim, trimleft, trimright, wordend, or wordstart}}
test string-22.2.$noComp {string wordstart} {
    list [catch {run {string wordstart a}} msg] $msg
} {1 {wrong # args: should be "string wordstart string index"}}
test string-22.3.$noComp {string wordstart} {
    list [catch {run {string wordstart a b c}} msg] $msg
} {1 {wrong # args: should be "string wordstart string index"}}
test string-22.4.$noComp {string wordstart} {

test string-30.1.1.$noComp {[Bug ba921a8d98]: string cat} {
    run {string cat [set data [binary format a* hello]] [encoding convertto $data] [unset data]}
} hellohello
test string-30.1.2.$noComp {[Bug ba921a8d98]: inplace cat by subst (compiled to "strcat" instruction)} {
    run {set x "[set data [binary format a* hello]][encoding convertto $data][unset data]"}
} hellohello

# Note: string-31.* tests use [tcl::string::insert] rather than [string insert]
# to dodge ticket [3397978fff] which would cause all arguments to be shared,
# thereby preventing the optimizations from being tested.
test string-31.1.$noComp {string insert, start of string} {
    run {tcl::string::insert 0123 0 _}
} _0123
test string-31.2.$noComp {string insert, middle of string} {
    run {tcl::string::insert 0123 2 _}
} 01_23
test string-31.3.$noComp {string insert, end of string} {
    run {tcl::string::insert 0123 4 _}
} 0123_
test string-31.4.$noComp {string insert, start of string, end-relative} {
    run {tcl::string::insert 0123 end-4 _}
} _0123
test string-31.5.$noComp {string insert, middle of string, end-relative} {
    run {tcl::string::insert 0123 end-2 _}
} 01_23
test string-31.6.$noComp {string insert, end of string, end-relative} {
    run {tcl::string::insert 0123 end _}
} 0123_
test string-31.7.$noComp {string insert, empty target string} {
    run {tcl::string::insert {} 0 _}
} _
test string-31.8.$noComp {string insert, empty insert string} {
    run {tcl::string::insert 0123 0 {}}
} 0123
test string-31.9.$noComp {string insert, empty strings} {
    run {tcl::string::insert {} 0 {}}
} {}
test string-31.10.$noComp {string insert, negative index} {
    run {tcl::string::insert 0123 -1 _}
} _0123
test string-31.11.$noComp {string insert, index beyond end} {
    run {tcl::string::insert 0123 5 _}
} 0123_
test string-31.12.$noComp {string insert, start of string, pure byte array} {
    run {tcl::string::insert [makeByteArray 0123] 0 [makeByteArray _]}
} _0123
test string-31.13.$noComp {string insert, middle of string, pure byte array} {
    run {tcl::string::insert [makeByteArray 0123] 2 [makeByteArray _]}
} 01_23
test string-31.14.$noComp {string insert, end of string, pure byte array} {
    run {tcl::string::insert [makeByteArray 0123] 4 [makeByteArray _]}
} 0123_
test string-31.15.$noComp {string insert, pure byte array, neither shared} {
    run {tcl::string::insert [makeByteArray 0123] 2 [makeByteArray _]}
} 01_23
test string-31.16.$noComp {string insert, pure byte array, first shared} {
    run {tcl::string::insert [makeShared [makeByteArray 0123]] 2\
            [makeByteArray _]}
} 01_23
test string-31.17.$noComp {string insert, pure byte array, second shared} {
    run {tcl::string::insert [makeByteArray 0123] 2\
            [makeShared [makeByteArray _]]}
} 01_23
test string-31.18.$noComp {string insert, pure byte array, both shared} {
    run {tcl::string::insert [makeShared [makeByteArray 0123]] 2\
            [makeShared [makeByteArray _]]}
} 01_23
test string-31.19.$noComp {string insert, start of string, pure Unicode} {
    run {tcl::string::insert [makeUnicode 0123] 0 [makeUnicode _]}
} _0123
test string-31.20.$noComp {string insert, middle of string, pure Unicode} {
    run {tcl::string::insert [makeUnicode 0123] 2 [makeUnicode _]}
} 01_23
test string-31.21.$noComp {string insert, end of string, pure Unicode} {
    run {tcl::string::insert [makeUnicode 0123] 4 [makeUnicode _]}
} 0123_
test string-31.22.$noComp {string insert, str start, pure Uni, first shared} {
    run {tcl::string::insert [makeShared [makeUnicode 0123]] 0 [makeUnicode _]}
} _0123
test string-31.23.$noComp {string insert, string mid, pure Uni, 2nd shared} {
    run {tcl::string::insert [makeUnicode 0123] 2 [makeShared [makeUnicode _]]}
} 01_23
test string-31.24.$noComp {string insert, string end, pure Uni, both shared} {
    run {tcl::string::insert [makeShared [makeUnicode 0123]] 4\
            [makeShared [makeUnicode _]]}
} 0123_
test string-31.25.$noComp {string insert, neither byte array nor Unicode} {
    run {tcl::string::insert [makeList a b c] 1 zzzzzz}
} {azzzzzz b c}

test string-32.1.$noComp {string is dict} {
    string is dict {a b c d}
} 1
test string-32.1a.$noComp {string is dict} {
    string is dict {a b c}
} 0
test string-32.2.$noComp {string is dict} {
    string is dict "a \{b c"
} 0
test string-32.3.$noComp {string is dict} {
    string is dict {a {b c}d e}
} 0
test string-32.4.$noComp {string is dict} {
    string is dict {}
} 1
test string-32.5.$noComp {string is dict} {
    string is dict -strict {a b c d}
} 1
test string-32.5a.$noComp {string is dict} {
    string is dict -strict {a b c}
} 0
test string-32.6.$noComp {string is dict} {
    string is dict -strict "a \{b c"
} 0
test string-32.7.$noComp {string is dict} {
    string is dict -strict {a {b c}d e}
} 0
test string-32.8.$noComp {string is dict} {
    string is dict -strict {}
} 1
test string-32.9.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x {a b c d}] $x
} {1 {}}
test string-32.9a.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x {a b c}] $x
} {0 -1}
test string-32.10.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x "a \{b c d"] $x
} {0 2}
test string-32.10a.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x "a \{b c"] $x
} {0 2}
test string-32.11.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x {a b {b c}d e}] $x
} {0 4}
test string-32.12.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x {}] $x
} {1 {}}
test string-32.13.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x {  {b c}d e}] $x
} {0 2}
test string-32.14.$noComp {string is dict} {
    set x {}
    list [string is dict -failindex x "\uabcd {b c}d e"] $x
} {0 2}
test string-32.15.$noComp {string is dict, valid dict} {
    string is dict {a b c d e f}
} 1
test string-32.16.$noComp {string is dict, invalid dict} {
    string is dict a
} 0
test string-32.17.$noComp {string is dict, valid dict packed in invalid dict} {
    string is dict {{a b c d e f g h}}
} 0

};				# foreach noComp {0 1}

# cleanup
rename MemStress {}

} {c}
test utf-8.4 {Tcl_UniCharAtIndex: index > 0} {
    string index \u4e4e\u25a\xff\u543 2
} "\uff"
test utf-8.5 {Tcl_UniCharAtIndex: high surrogate} {
    string index \ud842 0
} "\ud842"
test utf-8.6 {Tcl_UniCharAtIndex: low surrogate} {
    string index \udc42 0
} "\udc42"

test utf-9.1 {Tcl_UtfAtIndex: index = 0} {
    string range abcd 0 2
} {abc}
test utf-9.2 {Tcl_UtfAtIndex: index > 0} {

} 1
test utf-10.5 {Tcl_UtfBackslash: stops after 4 hex chars} testbytestring {
    expr {"\u4e216" eq "[testbytestring \xe4\xb8\xa1]6"}
} 1
test utf-10.6 {Tcl_UtfBackslash: stops after 5 hex chars} testbytestring {
    expr {"\U1e2165" eq "[testbytestring \xf0\x9e\x88\x96]5"}
} 1
test utf-10.7 {Tcl_UtfBackslash: stops after 6 hex chars} testbytestring {
    expr {"\U10e2165" eq "[testbytestring \xf4\x8e\x88\x96]5"}
} 1
proc bsCheck {char num} {
    global errNum
    test utf-10.$errNum {backslash substitution} {
	scan $char %c value
	set value
    } $num
    incr errNum
}
set errNum 8
bsCheck \b	8
bsCheck \e	101
bsCheck \f	12
bsCheck \n	10
bsCheck \r	13
bsCheck \t	9
bsCheck \v	11

    else
	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $langinfo_ok" >&5
$as_echo "$langinfo_ok" >&6; }
    fi


#--------------------------------------------------------------------
# Check for support of cfmakeraw, chflags and mkstemps functions
#--------------------------------------------------------------------

for ac_func in cfmakeraw chflags mkstemps
do :
  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
  cat >>confdefs.h <<_ACEOF
#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
_ACEOF

#--------------------------------------------------------------------
# Check for support of nl_langinfo function
#--------------------------------------------------------------------

SC_ENABLE_LANGINFO

#--------------------------------------------------------------------
# Check for support of cfmakeraw, chflags and mkstemps functions
#--------------------------------------------------------------------

AC_CHECK_FUNCS(cfmakeraw chflags mkstemps)

#--------------------------------------------------------------------
# Check for support of isnan() function or macro
#--------------------------------------------------------------------

AC_CACHE_CHECK([isnan], tcl_cv_isnan, [
    AC_TRY_LINK([#include <math.h>], [

#   endif /* !CRTSCTS&CNEW_RTSCTS */
#   if !defined(PAREXT) && defined(CMSPAR)
#	define PAREXT CMSPAR
#   endif /* !PAREXT&&CMSPAR */

#endif	/* HAVE_TERMIOS_H */

/*
 * The bits supported for describing the closeMode field of TtyState.
 */

enum CloseModeBits {
    CLOSE_DEFAULT,
    CLOSE_DRAIN,
    CLOSE_DISCARD
};

/*
 * Helper macros to make parts of this file clearer. The macros do exactly
 * what they say on the tin. :-) They also only ever refer to their arguments
 * once, and so can be used without regard to side effects.
 */

#define SET_BITS(var, bits)	((var) |= (bits))
#define CLEAR_BITS(var, bits)	((var) &= ~(bits))

/*
 * These structures describe per-instance state of file-based and serial-based
 * channels.
 */

typedef struct {
    Tcl_Channel channel;	/* Channel associated with this file. */
    int fd;			/* File handle. */
    int validMask;		/* OR'ed combination of TCL_READABLE,
				 * TCL_WRITABLE, or TCL_EXCEPTION: indicates
				 * which operations are valid on the file. */
} FileState;

typedef struct {
    FileState fileState;
#ifdef SUPPORTS_TTY
    int closeMode;		/* One of CLOSE_DEFAULT, CLOSE_DRAIN or
				 * CLOSE_DISCARD. */
    int doReset;		/* Whether we should do a terminal reset on
				 * close. */
    struct termios initState;	/* The state of the terminal when it was
				 * opened. */
#endif	/* SUPPORTS_TTY */
} TtyState;

#ifdef SUPPORTS_TTY

/*
 * The following structure is used to set or get the serial port attributes in
 * a platform-independant manner.
 */

typedef struct {
    int baud;
    int parity;
    int data;
    int stop;
} TtyAttrs;

#endif	/* SUPPORTS_TTY */

#define UNSUPPORTED_OPTION(detail) \
    if (interp) {							\
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(				\
		"%s not supported for this platform", (detail)));	\
	Tcl_SetErrorCode(interp, "TCL", "UNSUPPORTED", NULL);		\
    }

			    int mode, int *errorCode);
static int		FileTruncateProc(ClientData instanceData,
			    Tcl_WideInt length);
static Tcl_WideInt	FileWideSeekProc(ClientData instanceData,
			    Tcl_WideInt offset, int mode, int *errorCode);
static void		FileWatchProc(ClientData instanceData, int mask);
#ifdef SUPPORTS_TTY
static int		TtyCloseProc(ClientData instanceData,
			    Tcl_Interp *interp);
static void		TtyGetAttributes(int fd, TtyAttrs *ttyPtr);
static int		TtyGetOptionProc(ClientData instanceData,
			    Tcl_Interp *interp, const char *optionName,
			    Tcl_DString *dsPtr);
static int		TtyGetBaud(speed_t speed);
static speed_t		TtyGetSpeed(int baud);
static void		TtyInit(int fd);

 * This structure describes the channel type structure for serial IO.
 * Note that this type is a subclass of the "file" type.
 */

static const Tcl_ChannelType ttyChannelType = {
    "tty",			/* Type name. */
    TCL_CHANNEL_VERSION_5,	/* v5 channel */
    TtyCloseProc,		/* Close proc. */
    FileInputProc,		/* Input proc. */
    FileOutputProc,		/* Output proc. */
    NULL,			/* Seek proc. */
    TtySetOptionProc,		/* Set option proc. */
    TtyGetOptionProc,		/* Get option proc. */
    FileWatchProc,		/* Initialize notifier. */
    FileGetHandleProc,		/* Get OS handles out of channel. */

    *errorCodePtr = errno;
    return -1;
}

/*
 *----------------------------------------------------------------------
 *
 * FileCloseProc, TtyCloseProc --
 *
 *	These functions are called from the generic IO level to perform
 *	channel-type-specific cleanup when a file- or tty-based channel is
 *	closed.
 *
 * Results:
 *	0 if successful, errno if failed.
 *
 * Side effects:
 *	Closes the device of the channel.
 *

	if (close(fsPtr->fd) < 0) {
	    errorCode = errno;
	}
    }
    Tcl_Free(fsPtr);
    return errorCode;
}

#ifdef SUPPORTS_TTY
static int
TtyCloseProc(
    ClientData instanceData,
    Tcl_Interp *interp)
{
    TtyState *ttyPtr = instanceData;

    /*
     * If we've been asked by the user to drain or flush, do so now.
     */

    switch (ttyPtr->closeMode) {
    case CLOSE_DRAIN:
	tcdrain(ttyPtr->fileState.fd);
	break;
    case CLOSE_DISCARD:
	tcflush(ttyPtr->fileState.fd, TCIOFLUSH);
	break;
    default:
	/* Do nothing */
	break;
    }

    /*
     * If we've had our state changed from the default, reset now.
     */

    if (ttyPtr->doReset) {
	tcsetattr(ttyPtr->fileState.fd, TCSANOW, &ttyPtr->initState);
    }

    /*
     * Delegate to close for files.
     */

    return FileCloseProc(instanceData, interp);
}
#endif /* SUPPORTS_TTY */

/*
 *----------------------------------------------------------------------
 *
 * FileSeekProc --
 *
 *	This function is called by the generic IO level to move the access

static int
TtySetOptionProc(
    ClientData instanceData,	/* File state. */
    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
    const char *optionName,	/* Which option to set? */
    const char *value)		/* New value for option. */
{
    TtyState *fsPtr = instanceData;
    size_t len, vlen;
    TtyAttrs tty;
    int argc;
    const char **argv;
    struct termios iostate;

    len = strlen(optionName);

	    return TCL_ERROR;
	}

	/*
	 * system calls results should be checked there. - dl
	 */

	TtySetAttributes(fsPtr->fileState.fd, &tty);
	return TCL_OK;
    }

    /*
     * Option -handshake none|xonxoff|rtscts|dtrdsr
     */

    if ((len > 1) && (strncmp(optionName, "-handshake", len) == 0)) {
	/*
	 * Reset all handshake options. DTR and RTS are ON by default.
	 */

	tcgetattr(fsPtr->fileState.fd, &iostate);
	CLEAR_BITS(iostate.c_iflag, IXON | IXOFF | IXANY);
#ifdef CRTSCTS
	CLEAR_BITS(iostate.c_cflag, CRTSCTS);
#endif /* CRTSCTS */
	if (Tcl_UtfNcasecmp(value, "NONE", vlen) == 0) {
	    /*
	     * Leave all handshake options disabled.

			"bad value for -handshake: must be one of"
			" xonxoff, rtscts, dtrdsr or none", -1));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
			"VALUE", NULL);
	    }
	    return TCL_ERROR;
	}
	tcsetattr(fsPtr->fileState.fd, TCSADRAIN, &iostate);
	return TCL_OK;
    }

    /*
     * Option -xchar {\x11 \x13}
     */

			" two elements with each a single 8-bit character", -1));
		Tcl_SetErrorCode(interp, "TCL", "VALUE", "XCHAR", NULL);
	    }
	    Tcl_Free(argv);
	    return TCL_ERROR;
	}

	tcgetattr(fsPtr->fileState.fd, &iostate);

	iostate.c_cc[VSTART] = argv[0][0];
	iostate.c_cc[VSTOP] = argv[1][0];
	if (argv[0][0] & 0x80 || argv[1][0] & 0x80) {
	    Tcl_UniChar character = 0;
	    int charLen;

	    charLen = Tcl_UtfToUniChar(argv[0], &character);
	    if ((character > 0xFF) || argv[0][charLen]) {
		goto badXchar;
	    }
	    iostate.c_cc[VSTART] = character;
	    charLen = Tcl_UtfToUniChar(argv[1], &character);
	    if ((character > 0xFF) || argv[1][charLen]) {
		goto badXchar;
	    }
	    iostate.c_cc[VSTOP] = character;
	}
	Tcl_Free(argv);

	tcsetattr(fsPtr->fileState.fd, TCSADRAIN, &iostate);
	return TCL_OK;
    }

    /*
     * Option -timeout msec
     */

    if ((len > 2) && (strncmp(optionName, "-timeout", len) == 0)) {
	int msec;

	tcgetattr(fsPtr->fileState.fd, &iostate);
	if (Tcl_GetInt(interp, value, &msec) != TCL_OK) {
	    return TCL_ERROR;
	}
	iostate.c_cc[VMIN] = 0;
	iostate.c_cc[VTIME] = (msec==0) ? 0 : (msec<100) ? 1 : (msec+50)/100;
	tcsetattr(fsPtr->fileState.fd, TCSADRAIN, &iostate);
	return TCL_OK;
    }

    /*
     * Option -ttycontrol {DTR 1 RTS 0 BREAK 0}
     */

		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
			"VALUE", NULL);
	    }
	    Tcl_Free(argv);
	    return TCL_ERROR;
	}

	ioctl(fsPtr->fileState.fd, TIOCMGET, &control);
	for (i = 0; i < argc-1; i += 2) {
	    if (Tcl_GetBoolean(interp, argv[i+1], &flag) == TCL_ERROR) {
		Tcl_Free(argv);
		return TCL_ERROR;
	    }
	    if (Tcl_UtfNcasecmp(argv[i], "DTR", strlen(argv[i])) == 0) {
		if (flag) {
		    SET_BITS(control, TIOCM_DTR);
		} else {
		    CLEAR_BITS(control, TIOCM_DTR);
		}
	    } else if (Tcl_UtfNcasecmp(argv[i], "RTS", strlen(argv[i])) == 0) {
		if (flag) {
		    SET_BITS(control, TIOCM_RTS);
		} else {
		    CLEAR_BITS(control, TIOCM_RTS);
		}
	    } else if (Tcl_UtfNcasecmp(argv[i], "BREAK", strlen(argv[i])) == 0) {
#if defined(TIOCSBRK) && defined(TIOCCBRK)
		if (flag) {
		    ioctl(fsPtr->fileState.fd, TIOCSBRK, NULL);
		} else {
		    ioctl(fsPtr->fileState.fd, TIOCCBRK, NULL);
		}
#else /* TIOCSBRK & TIOCCBRK */
		UNSUPPORTED_OPTION("-ttycontrol BREAK");
		Tcl_Free(argv);
		return TCL_ERROR;
#endif /* TIOCSBRK & TIOCCBRK */
	    } else {
		if (interp) {
		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			    "bad signal \"%s\" for -ttycontrol: must be"
			    " DTR, RTS or BREAK", argv[i]));
		    Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
			"VALUE", NULL);
		}
		Tcl_Free(argv);
		return TCL_ERROR;
	    }
	} /* -ttycontrol options loop */

	ioctl(fsPtr->fileState.fd, TIOCMSET, &control);
	Tcl_Free(argv);
	return TCL_OK;
#else /* TIOCMGET&TIOCMSET */
	UNSUPPORTED_OPTION("-ttycontrol");
#endif /* TIOCMGET&TIOCMSET */
    }

    /*
     * Option -closemode drain|discard
     */

    if ((len > 2) && (strncmp(optionName, "-closemode", len) == 0)) {
	if (Tcl_UtfNcasecmp(value, "DEFAULT", vlen) == 0) {
	    fsPtr->closeMode = CLOSE_DEFAULT;
	} else if (Tcl_UtfNcasecmp(value, "DRAIN", vlen) == 0) {
	    fsPtr->closeMode = CLOSE_DRAIN;
	} else if (Tcl_UtfNcasecmp(value, "DISCARD", vlen) == 0) {
	    fsPtr->closeMode = CLOSE_DISCARD;
	} else {
	    if (interp) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad mode \"%s\" for -closemode: must be"
			" default, discard, or drain", value));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
			"VALUE", NULL);
	    }
	    return TCL_ERROR;
	}
	return TCL_OK;
    }

    /*
     * Option -inputmode normal|password|raw
     */

    if ((len > 2) && (strncmp(optionName, "-inputmode", len) == 0)) {
	if (tcgetattr(fsPtr->fileState.fd, &iostate) < 0) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"couldn't read serial terminal control state: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	if (Tcl_UtfNcasecmp(value, "NORMAL", vlen) == 0) {
	    SET_BITS(iostate.c_iflag, BRKINT | IGNPAR | ISTRIP | ICRNL | IXON);
	    SET_BITS(iostate.c_oflag, OPOST);
	    SET_BITS(iostate.c_lflag, ECHO | ECHONL | ICANON | ISIG);
	} else if (Tcl_UtfNcasecmp(value, "PASSWORD", vlen) == 0) {
	    SET_BITS(iostate.c_iflag, BRKINT | IGNPAR | ISTRIP | ICRNL | IXON);
	    SET_BITS(iostate.c_oflag, OPOST);
	    CLEAR_BITS(iostate.c_lflag, ECHO);
	    /*
	     * Note: password input turns out to be best if you echo the
	     * newline that the user types. Theoretically we could get users
	     * to do the processing of this in their scripts, but it always
	     * feels highly unnatural to do so in practice.
	     */
	    SET_BITS(iostate.c_lflag, ECHONL | ICANON | ISIG);
	} else if (Tcl_UtfNcasecmp(value, "RAW", vlen) == 0) {
#ifdef HAVE_CFMAKERAW
	    cfmakeraw(&iostate);
#else /* !HAVE_CFMAKERAW */
	    CLEAR_BITS(iostate.c_iflag, IGNBRK | BRKINT | PARMRK | ISTRIP
		    | INLCR | IGNCR | ICRNL | IXON);
	    CLEAR_BITS(iostate.c_oflag, OPOST);
	    CLEAR_BITS(iostate.c_lflag, ECHO | ECHONL | ICANON | ISIG | IEXTEN);
	    CLEAR_BITS(iostate.c_cflag, CSIZE | PARENB);
	    SET_BITS(iostate.c_cflag, CS8);
#endif /* HAVE_CFMAKERAW */
	} else if (Tcl_UtfNcasecmp(value, "RESET", vlen) == 0) {
	    /*
	     * Reset to the initial state, whatever that is.
	     */

	    memcpy(&iostate, &fsPtr->initState, sizeof(struct termios));
	} else {
	    if (interp) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad mode \"%s\" for -inputmode: must be"
			" normal, password, raw, or reset", value));
		Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE",
			"VALUE", NULL);
	    }
	    return TCL_ERROR;
	}
	if (tcsetattr(fsPtr->fileState.fd, TCSADRAIN, &iostate) < 0) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"couldn't update serial terminal control state: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}

	/*
	 * If we've changed the state from default, schedule a reset later.
	 * Note that this specifically does not detect changes made by calling
	 * an external stty program; that is deliberate, as it maintains
	 * compatibility with existing code!
	 *
	 * This mechanism in Tcl is not intended to be a full replacement for
	 * what stty does; it just handles a few common cases and tries not to
	 * leave things in a broken state.
	 */

	fsPtr->doReset = (memcmp(&iostate, &fsPtr->initState,
		sizeof(struct termios)) != 0);
	return TCL_OK;
    }

    return Tcl_BadChannelOption(interp, optionName,
	    "closemode inputmode mode handshake timeout ttycontrol xchar");
}

/*
 *----------------------------------------------------------------------
 *
 * TtyGetOptionProc --
 *

static int
TtyGetOptionProc(
    ClientData instanceData,	/* File state. */
    Tcl_Interp *interp,		/* For error reporting - can be NULL. */
    const char *optionName,	/* Option to get. */
    Tcl_DString *dsPtr)		/* Where to store value(s). */
{
    TtyState *fsPtr = instanceData;
    size_t len;
    char buf[3*TCL_INTEGER_SPACE + 16];
    int valid = 0;		/* Flag if valid option parsed. */
    struct termios iostate;

    if (optionName == NULL) {
	len = 0;
    } else {
	len = strlen(optionName);
    }

    /*
     * Get option -closemode
     */

    if (len == 0) {
	Tcl_DStringAppendElement(dsPtr, "-closemode");
    }
    if (len==0 || (len>1 && strncmp(optionName, "-closemode", len)==0)) {
	switch (fsPtr->closeMode) {
	case CLOSE_DRAIN:
	    Tcl_DStringAppendElement(dsPtr, "drain");
	    break;
	case CLOSE_DISCARD:
	    Tcl_DStringAppendElement(dsPtr, "discard");
	    break;
	default:
	    Tcl_DStringAppendElement(dsPtr, "default");
	    break;
	}
    }

    /*
     * Get option -inputmode
     *
     * This is a great simplification of the underlying reality, but actually
     * represents what almost all scripts really want to know.
     */

    if (len == 0) {
	Tcl_DStringAppendElement(dsPtr, "-inputmode");
    }
    if (len==0 || (len>1 && strncmp(optionName, "-inputmode", len)==0)) {
	valid = 1;
	if (tcgetattr(fsPtr->fileState.fd, &iostate) < 0) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"couldn't read serial terminal control state: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	if (iostate.c_lflag & ICANON) {
	    if (iostate.c_lflag & ECHO) {
		Tcl_DStringAppendElement(dsPtr, "normal");
	    } else {
		Tcl_DStringAppendElement(dsPtr, "password");
	    }
	} else {
	    Tcl_DStringAppendElement(dsPtr, "raw");
	}
    }

    /*
     * Get option -mode
     */

    if (len == 0) {
	Tcl_DStringAppendElement(dsPtr, "-mode");
    }
    if (len==0 || (len>2 && strncmp(optionName, "-mode", len)==0)) {
	TtyAttrs tty;

	valid = 1;
	TtyGetAttributes(fsPtr->fileState.fd, &tty);
	sprintf(buf, "%d,%c,%d,%d", tty.baud, tty.parity, tty.data, tty.stop);
	Tcl_DStringAppendElement(dsPtr, buf);
    }

    /*
     * Get option -xchar
     */

    if (len == 0) {
	Tcl_DStringAppendElement(dsPtr, "-xchar");
	Tcl_DStringStartSublist(dsPtr);
    }
    if (len==0 || (len>1 && strncmp(optionName, "-xchar", len)==0)) {

	Tcl_DString ds;

	valid = 1;
	tcgetattr(fsPtr->fileState.fd, &iostate);
	Tcl_DStringInit(&ds);

	Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTART], 1, &ds);
	Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds));
	TclDStringClear(&ds);

	Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTOP], 1, &ds);

     * returned by unnamed [fconfigure chan].
     */

    if ((len > 1) && (strncmp(optionName, "-queue", len) == 0)) {
	int inQueue=0, outQueue=0, inBuffered, outBuffered;

	valid = 1;
	GETREADQUEUE(fsPtr->fileState.fd, inQueue);
	GETWRITEQUEUE(fsPtr->fileState.fd, outQueue);
	inBuffered = Tcl_InputBuffered(fsPtr->fileState.channel);
	outBuffered = Tcl_OutputBuffered(fsPtr->fileState.channel);

	sprintf(buf, "%d", inBuffered+inQueue);
	Tcl_DStringAppendElement(dsPtr, buf);
	sprintf(buf, "%d", outBuffered+outQueue);
	Tcl_DStringAppendElement(dsPtr, buf);
    }

#if defined(TIOCMGET)
    /*
     * Get option -ttystatus
     * Option is readonly and returned by [fconfigure chan -ttystatus] but not
     * returned by unnamed [fconfigure chan].
     */

    if ((len > 4) && (strncmp(optionName, "-ttystatus", len) == 0)) {
	int status;

	valid = 1;
	ioctl(fsPtr->fileState.fd, TIOCMGET, &status);
	TtyModemStatusStr(status, dsPtr);
    }
#endif /* TIOCMGET */

#if defined(TIOCGWINSZ)
    /*
     * Get option -winsize
     * Option is readonly and returned by [fconfigure chan -winsize] but not
     * returned by [fconfigure chan] without explicit option name.
     */

    if ((len > 1) && (strncmp(optionName, "-winsize", len) == 0)) {
	struct winsize ws;

	valid = 1;
	if (ioctl(fsPtr->fileState.fd, TIOCGWINSZ, &ws) < 0) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"couldn't read terminal size: %s",
			Tcl_PosixError(interp)));
	    }
	    return TCL_ERROR;
	}
	sprintf(buf, "%d", ws.ws_col);
	Tcl_DStringAppendElement(dsPtr, buf);
	sprintf(buf, "%d", ws.ws_row);
	Tcl_DStringAppendElement(dsPtr, buf);
    }
#endif /* TIOCGWINSZ */

    if (valid) {
	return TCL_OK;
    }
    return Tcl_BadChannelOption(interp, optionName,
		"closemode inputmode mode queue ttystatus winsize xchar");
}

static const struct {int baud; speed_t speed;} speeds[] = {
#ifdef B0
    {0, B0},
#endif
#ifdef B50

				 * NULL. */
    Tcl_Obj *pathPtr,		/* Name of file to open. */
    int mode,			/* POSIX open mode. */
    int permissions)		/* If the open involves creating a file, with
				 * what modes to create it? */
{
    int fd, channelPermissions;
    TtyState *fsPtr;
    const char *native, *translation;
    char channelName[16 + TCL_INTEGER_SPACE];
    const Tcl_ChannelType *channelTypePtr;

    switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
    case O_RDONLY:
	channelPermissions = TCL_READABLE;