[Octave-bug-tracker] [bug #38149] regexp doesn't return empty tokens -- they just disappear

[Michael Godfrey]

Follow-up Comment #8, bug #38149 (project octave):

Maybe this more explicit code will work.


well, does not look like it:

>> te = regexp ('abc', 'abc(z?)', 'tokenExtents');
>> disp (te)
    [1x2 double]

>> 
>> te = regexp ('abc', 'abc(z)?', 'tokenExtents');
>> disp (te)
    [1x2 double]

>> 
>> [T, TE, NM] = regexp (sprintf('%s','John DavisnRogers, James'),
??? [T, TE, NM] = regexp (sprintf('%s','John DavisnRogers, James'),
                                                                    |
Error: Expression or statement is incorrect--possibly unbalanced (, {, or [.
 
>> '(?<first>w+)s+(?<last>w+)|(?<last>w+),s+(?<first>w+)', 'tokens',

ans =

(?<first>w+)s+(?<last>w+)|(?<last>w+),s+(?<first>w+)


ans =

tokens

>> 'tokenExtents', 'names');
??? 'tokenExtents', 'names');
                           |
Error: Unbalanced or unexpected parenthesis or bracket.
 
>> disp (T)
??? Undefined function or variable 'T'.
 
>> disp (TE)
??? Undefined function or variable 'TE'.
 
>> disp (NM)
??? Undefined function or variable 'NM'.
 
>> 
>> te = regexp ('abce', '((a)(z)?b(c)(z*))(z)?(e)?', 'tokenExtents');
>> disp (te)
    [3x2 double]

>> 
>> [S, E, TE, M, T, NM, SP] = regexp ('abc',
??? [S, E, TE, M, T, NM, SP] = regexp ('abc',
                                             |
Error: Expression or statement is incorrect--possibly unbalanced (, {, or [.
 
>> '(?<all>(a)(?<miss1>z?)b(?<hit1>c)(z*))')
??? '(?<all>(a)(?<miss1>z?)b(?<hit1>c)(z*))')
                                            |
Error: Unbalanced or unexpected parenthesis or bracket.
 
>> 
>> disp (TE)
??? Undefined function or variable 'TE'.
 
>> disp (T)
??? Undefined function or variable 'T'.
 
>> disp (NM)
??? Undefined function or variable 'NM'.
 
>> 
>> 


    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?38149>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/