Check-in [f4674a9689]

{"tip": {
	"544":{"url":"./tip/544.md","keywords":"Tcl","":"","state":"Draft","type":"Project","author":["Jan Nijtmans <jan.nijtmans@users.sf.net>","Francois Vogel <[email protected]>"],"created":"15-May-2019","title":"# TIP 543: Export TclGetIntForIndex()","post-history":"","tcl-version":"8.7","vote":"Pending","tcl-branch":"tip-544","discussions-to":"Tcl Core list","is-jest":false},
	"543":{"url":"./tip/543.md","keywords":"Tcl, traces","created":"10-May-2019","post-history":"","state":"Draft","vote":"Pending","tcl-version":"9.0","type":"Project","title":"# TIP 543: Eliminate TCL\\_INTERP\\_DESTROYED flag value","author":["Don Porter <[email protected]>"],"is-jest":false},
	"542":{"url":"./tip/542.md","keywords":"Tcl","created":"10-May-2019","post-history":"","state":"Draft","tcl-branch":"utf-max","tcl-version":"8.7","vote":"Pending","type":"Project","title":"# TIP 542: New encodings: UTF-16, UCS-2, Support for switchable (Androwish-compatible) Full Unicode support.","discussions-to":"Tcl Core list","author":["Jan Nijtmans <[email protected]>","Jan Nijtmans <[email protected]>"],"is-jest":false},
	"541":{"url":"./tip/541.md","keywords":"Tcl","created":"8-May-2019","post-history":"","state":"Draft","tcl-branch":"bug-2858503fff","tcl-version":"8.6","vote":"Pending","type":"Project","title":"# TIP 541: Add support for 'end' index in ttk::combobox current","author":["Francois Vogel <[email protected]>"],"is-jest":false},
	"540":{"url":"./tip/540.md","keywords":"Tcl, Unix, pipeline","created":"03-May-2019","post-history":"","state":"Draft","vote":"Pending","tcl-version":"8.7","type":"Project","title":"# TIP 540: Add -signal Channel Configure Option to POSIX Pipes","author":["Donal K. Fellows <[email protected]>"],"is-jest":false},
	"539":{"url":"./tip/539.md","tcl-ticket":"2370575","keywords":"Tcl, dict filter, set intersection","created":"27-Nov-2008","post-history":"","state":"Draft","tcl-version":"8.7","vote":"Pending","type":"Project","title":"# TIP 539: Multiple dict filter patterns","author":["Lars Hellström <[email protected]>"],"is-jest":false},
	"538":{"url":"./tip/538.md","keywords":"Tcl","created":"9-April-2019","post-history":"","state":"Draft","tcl-branch":"digit-bit-60","tcl-version":"8.7","vote":"Pending","type":"Project","title":"# TIP 538: Externalize libtommath","author":["Jan Nijtmans <[email protected]>"],"is-jest":false},
	"537":{"url":"./tip/537.md","keywords":"Tcl","created":"7-April-2019","post-history":"","state":"Draft","tcl-branch":"regexp-api-64bit","tcl-version":"9.0","vote":"","type":"Project","title":"# TIP 537: Enable 64-bit indexes in regexp matching","author":["Jan Nijtmans <[email protected]>"],"is-jest":false},

	"4":{"url":"./tip/4.md","created":"26-Oct-2000","post-history":"","state":"Draft","vote":"Pending","type":"Informative","title":"# TIP 4: Tcl Release and Distribution Philosophy","discussions-to":"news:comp.lang.tcl","author":["Brent Welch <[email protected]>","Donal K. Fellows <[email protected]>","Larry W. Virden <[email protected]>","Larry W. Virden <[email protected]>"],"is-jest":false},
	"3":{"url":"./tip/3.md","created":"14-Sep-2000","post-history":"","state":"Accepted","vote":"Done","type":"Process","title":"# TIP 3: TIP Format","author":["Andreas Kupries <[email protected]>","Donal K. Fellows <[email protected]>"],"is-jest":false},
	"2":{"url":"./tip/2.md","created":"12-Sep-2000","post-history":"","state":"Draft","vote":"Pending","type":"Process","title":"# TIP 2: TIP Guidelines","author":["Andreas Kupries <[email protected]>","Donal K. Fellows <[email protected]>","Don Porter <[email protected]>","Mo DeJong <[email protected]>","Larry W. Virden <[email protected]>","Kevin Kenny <[email protected]>"],"is-jest":false},
	"1":{"url":"./tip/1.md","created":"14-Sep-2000","post-history":"","state":"Active","vote":"No voting","type":"Informational","title":"# TIP 1: TIP Index","author":["TIP Editor <[email protected]>"],"is-jest":false},
	"0":{"url":"./tip/0.md","created":"11-Dec-2000","post-history":"","state":"Final","vote":"Done","type":"Process","title":"# TIP 0: Tcl Core Team Basic Rules","author":["John Ousterhout <[email protected]>"],"is-jest":false},
	"@min": 0,
	"@max": 544
}, "@timestamp": 1557949792}

# TIP 543: Export TclGetIntForIndex()
	Author:         Jan Nijtmans <jan.nijtmans@users.sf.net>
	Author:         Francois Vogel <[email protected]>
	State:          Draft
	Type:           Project
	Tcl-Version:    8.7
	Vote:           Pending
	Created:        15-May-2019
	Post-History:
	Discussions-To: Tcl Core list

  * int Tcl\_GetIntForIndex(Tcl\_Interp *interp, Tcl\_Obj *objPtr,
	    size\_t endValue, size\_t *indexPtr)

# Rationale

This function can be used for extensions to parse indexes like
"end-5", "12+1" ... See [TIP 502: Index Value Reform](502.md) and
[TIP 176: Add String index Values](176.md).

Use case  in Tk: see
[Tcl-core list discussion](http://code.activestate.com/lists/tcl-core/20663/)
of
[TIP 541: Add support for 'end' index in ttk::combobox current](176.md).

# Compatibility

This is fully upwards compatible with Tcl 8.6.

# Reference Implementation

Available on branch [tip-544](https://core.tcl-lang.org/tcl/timeline?t=tip-544).

# Copyright

This document has been placed in the public domain.