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[Octave-bug-tracker] [bug #49659] Non-empty ouput for non-matching regex


From: Guillaume
Subject: [Octave-bug-tracker] [bug #49659] Non-empty ouput for non-matching regexp with 'names' option
Date: Mon, 21 Nov 2016 12:38:18 +0000 (UTC)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:49.0) Gecko/20100101 Firefox/49.0

URL:
  <http://savannah.gnu.org/bugs/?49659>

                 Summary: Non-empty ouput for non-matching regexp with 'names'
option
                 Project: GNU Octave
            Submitted by: gyom
            Submitted on: Mon 21 Nov 2016 12:38:16 PM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: Guillaume
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

    _______________________________________________________

Details:

Octave's output differs from Matlab's when using the 'names' flag and nothing
matches.

Octave:


>> r = regexp('nothing','(?<file>\S+) (?<id>[0-9]+)','names')
r =

  scalar structure containing the fields:

    file = {}(1x0)
    id = {}(1x0)

>> size(r)
ans =

   1   1


and Matlab:


>> r = regexp('nothing','(?<file>\S+) (?<id>[0-9]+)','names')
r = 
  0×0 empty struct array with fields:
    file
    id
>> size(r)
ans =
     0     0





    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?49659>

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