[Octave-bug-tracker] [bug #39431] regexp: documentation needs to be expanded

[Rik]

URL:
  <http://savannah.gnu.org/bugs/?39431>

                 Summary: regexp: documentation needs to be expanded
                 Project: GNU Octave
            Submitted by: rik5
            Submitted on: Sun 07 Jul 2013 05:08:54 PM PDT
                Category: Documentation
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Documentation
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

The documentation for regexp is missing some useful available features.  Here
are some that I noticed.

1) Lookaround operators such as (?=), (?!), (?<=), (?<!)

2) POSIX character classes [[:class:]] where class might be "alpha" or "alnum"
or ...

3) non-greedy (?) and atomic (+) adjectives for repetition quantifiers [*+?].


4) Backreferences in patterns such as \1 or \k<name>

5) Comments within patternns using (?# comment ) syntax

6) Discussion of escape sequence processing such as '\n' => newline.

7) Expanded discussion of named tokens

8) Conditional patterns based on prior subpattern capture




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