[Octave-bug-tracker] [bug #29987] strrep compatibility

[John W. Eaton]

URL:
  <http://savannah.gnu.org/bugs/?29987>

                 Summary: strrep compatibility
                 Project: GNU Octave
            Submitted by: jwe
            Submitted on: Sat 29 May 2010 01:21:10 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

Octave's strrep is incompatible with Matlab when there are overlapping
patterns.  For example:

  Matlab> strrep(',0,0,',',0,',',,')
  ans = ,,,,
  Octave> strrep(',0,0,',',0,',',,')
  ans = ,,0,

The Matlab behavior is documented, so it seems that it is intentional.

It looks like the function to fix is qs_replace in
src/DLD-FUNCTIONS/strfind.cc, but it is not clear to me exactly what the
proper fix is.




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