[Bug c++/25116] rbreak regexp does not work as expected

["ssbssa at sourceware dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=25116

Hannes Domani <ssbssa at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-12-30
                 CC|                            |ssbssa at sourceware dot org
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Hannes Domani <ssbssa at sourceware dot org> ---
Character classes don't work because once a colon is found in the expression,
it uses the part before the colon as a filename qualification:

rbreak file:regex

    If rbreak is called with a filename qualification, it limits the search for
functions matching the given regular expression to the specified file.

Currently an empty filename qualification matches no file, so I wonder if we
could change it so an empty filename qualification matches all files, then we
could do something like this instead:

(gdb) rbreak :myNameSpace[[:digit:]]

And everything after the first colon would be the regexp, still matching all
files.

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