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http://bugs.exim.org/show_bug.cgi?id=1315
Christoph Anton Mitterer <calestyo@???> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |
--- Comment #4 from Christoph Anton Mitterer <calestyo@???> 2012-11-09 00:05:39 ---
Hi Philip.
(In reply to comment #2)
> The circumflex and dollar metacharacters are zero-width assertions. That is,
> they test for a particular condition being true without consuming any
> characters from the subject string.
Thanks for that,... I'd understand this, now that I know what it means.
1) May I suggest (which is why I reopened this "bug") that you add a small
example at the places you've mentioned.
Perhaps one similar to mine e.g.:
This means that "^a[^$]" would not match the single line "a", but only e.g.
"ab"
2) Further, it would perhaps make sense to tell what this particular condition
is... I guess "the end of the current input line has been met" (in contrast to
"I found and end-of-line character).
And the same of (1) and (2) perhaps for "^"
> In the section on character classes it already says "A class that starts with a
> circumflex is not an assertion; it still consumes a character from the subject
> string, and therefore it fails if the current pointer is at the end of the
> string."
Ah,... sorry for not seeing this... PCRE is just so mighty and the
documentation so long... even when I read it once completely,... I forgot 99%
10 minutes after ;)
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