[Octave-bug-tracker] [bug #37092] backslash escape character in regexp

[Rik]

Update of bug #37092 (project octave):

                Category:                    None => Libraries              
                  Status:                    None => Need Info              
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

This is the new behavior of regexp and regexprep in order to be
Matlab-compatible.  Quoting from the NEWS file which lists significant changes
from the last revision:


 ** For compatibility with Matlab, the regexp, regexpi, and regexprep
    functions now process backslash escapes in single-quoted pattern
    strings.  In addition, the regexprep function now processes backslash
    escapes in single-quoted replacement strings.


So, patterns like '\\' really look like "\\" which collapses to just "\" and
this causes the problem.  It would be useful, if you have access to Matlab, to
verify that they haven't done a special case for '\\'.  I rather doubt it
though.

Either add an extra backslash when using escape sequences like "\n" or look at
the regexptranslate function for another option.

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