TIP #10000 Version 1.153: Dummy Proposal for Testing Editing Interfaces

This is not necessarily the current version of this TIP.

TIP:	10000
Title:	Dummy Proposal for Testing Editing Interfaces
Version:	$Revision: 1.153 $
Authors:	Don Porter <dgp at users dot sourceforge dot net> nobody at nowhere dot com Andreas Kupries <akupries at westend dot com> Donal K. Fellows <fellowsd at cs dot man dot ac dot uk> Andreas Kupries <a dot kupries at westend dot com> dgp at user dot sourceforge dot net Richard Suchenwirth <richard dot suchenwirth at kst dot siemens dot de> Kevin B KENNY <kennykb at acm dot org> Jeff Hobbs <hobbs at users dot sourceforge dot net> Test User <test at example dot com> New User <newbie at example dot com> Working User <thisworks at example dot com> Vince Darley <vincentdarley at users dot sourceforge dot net> Fabrice Pardo <Fabrice dot Pardo at l2m dot cnrs dot fr> Don Porter <dgp at users dot sf dot net> Donal K. Fellows <donal dot k dot fellows at man dot ac dot uk> Joe Mistachkin <joe at mistachkin dot com> Donal K. Fellows <donal dot k dot fellows at manchester dot ac dot uk>
State:	Draft
Type:	Informative
Vote:	Pending
Created:	Sunday, 03 December 2000

Abstract

This proposal has no content. It exists only to provide a document on which testing of and practice using of the TIP editing interfaces can take place.

Testing Non-ASCII Characters...

Lars Hellstrøm did not write this

Proposal

The description of the supported index formats documented for the string index command will be updated to read:

integer -- For any index value that passes string is integer -strict, the char specified at this integral index (e.g. 2 would refer to the c in abcd).
end -- The last char of the string (e.g. end would refer to the d in abcd).
end-N -- The last char of the string minus the specified integer offset N (e.g. end-1 would refer to the c in abcd).
end+N -- The last char of the string plus the specified integer offset N (e.g. end+-1 would refer to the c in abcd).
''M''+N -- The char specified at the integral index that is the sum of integer values M and N (e.g. 1+1 would refer to the c in abcd).
''M''-N -- The char specified at the integral index that is the difference of integer values M and N (e.g. 2-1 would refer to the b in abcd).
In the specifications above, the integer value M contains no trailing whitespace and the integer value N contains no leading whitespace.

The internal routine TclGetIntForIndex will be updated to implement the parsing specified by the documentation above.

The documentation of all Tcl commands that call TclGetIntForIndex to parse index values will be updated to refer to the documentation for string index for a description of the index format. This documentation update will remove any mention that the index values e and en are supported (as prefixes of end). Their support will be continued for compatibility, but that support will now be undocumented and deprecated.

The implementation of the commands regexp -start and regsub -start will be updated to call TclGetIntForIndex so that the full set of index formats will be supported. (Currently only integer values are accepted).

The error message produced by TclGetIntForIndex when parsing an invalid index will be updated to give the advice must be integer?[+-]integer? or end?[+-]integer?, in agreement with the extended set of index formats.

Copyright

This document has been placed in the public domain.

This is not necessarily the current version of this TIP.

TIP AutoGenerator - written by Donal K. Fellows