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bug#17631: 24.3.50; the following should return t
From: |
Glenn Morris |
Subject: |
bug#17631: 24.3.50; the following should return t |
Date: |
Thu, 29 May 2014 11:51:42 -0400 |
User-agent: |
Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/) |
Samuel Lê wrote:
> I ran this code, as someone recommanded on the #emacs chan of freenode:
> (with-temp-buffer
> (insert "foo Bar")
> (goto-char (point-min))
> (re-search-forward "[[:upper:]]")
> (looking-at "Bar"))
>
> t was expected, but instead I got returned nil.
Your expectation is incorrect, for two reasons:
1. `[:upper:]'
This matches any upper-case letter, as determined by the current
case table (*note Case Tables::). If `case-fold-search' is
non-`nil', this also matches any lower-case letter.
2. re-search-forward leaves point at the end of the match, ie after "B"
in this case.
Compare:
(with-temp-buffer
(insert "foo Bar")
(goto-char (point-min))
(let (case-fold-search)
(re-search-forward "[[:upper:]]")
(looking-at "ar")))
The help-gnu-emacs mailing list is probably a better place to discuss
these things, but feel free to keep talking about it here.
I'll close this report though, since it is not a bug.