lws@comm.wang.com (Lyle Seaman) (08/11/90)
Isn't there some way to get a ' into a character class? I want to to do something like: /[\w\.\-\']+/ ie, match a string of alphanumerics, periods, hyphens and apostrophes. But PERL always complains. If somebody could explain what that sequence above really means, and/or how I can what I want, I'd be most grateful. -- Lyle Wang lws@comm.wang.com 508 967 2322 Lowell, MA, USA uunet!comm.wang.com!lws
lwall@jpl-devvax.JPL.NASA.GOV (Larry Wall) (08/12/90)
In article <1990Aug11.001936.16075@comm.wang.com> lws@comm.wang.com (Lyle Seaman) writes:
: Isn't there some way to get a ' into a character class?
: I want to to do something like:
: /[\w\.\-\']+/ ie, match a string of alphanumerics, periods, hyphens and
: apostrophes.
:
: But PERL always complains. If somebody could explain what that
: sequence above really means, and/or how I can what I want, I'd
: be most grateful.
The problem isn't \' but \-. This is fixed in patchlevel 27.
Larrylws@comm.wang.com (Lyle Seaman) (08/13/90)
Problem solved. As one responder pointed out (thanks again Tom), rearranging the character class [\w\.\-\'] to be [\w\'\.\-] circumvents the problem. This is ostensibly because ' is before . in the ASCII collating sequence. Larry, can this be true? I haven't seen that documented anywhere, doncha think that's kind of subtle? Larry Wall said that the problem was due to a bug in the handling of \- which is fixed in PL 27. Could that bug be successfully circumvented in the fashion described above? -- Lyle Wang lws@comm.wang.com 508 967 2322 Lowell, MA, USA uunet!comm.wang.com!lws