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Re: [PATCH] git send-email: edit recipient addresses with the --compose flag

From
Aristotle Pagaltzis <pagaltzis@gmx.de>
Date
Nov 10, 2008, 08:08 UTC
Message-ID
<20081110080848.GA325@klangraum.plasmasturm.org>
In-Reply-To
<200811100849.36736.fg@one2team.com>
* Francis Galiegue <fg@one2team.com> [2008-11-10 08:55]:
Show 9 quoted lines
> Le Monday 10 November 2008 01:38:30 Ian Hilt, vous avez écrit :
> > On Sun, 9 Nov 2008, Junio C Hamano wrote:
> > > Ian Hilt <ian.hilt@gmx.com> writes:
> > > > On Sun, 9 Nov 2008, Francis Galiegue wrote:
> > > >> Le Sunday 09 November 2008 13:59:48 Ian Hilt, vous avez écrit :
> > > >> > +	if ($c_file =~ /^To:\s*+(.+)\s*\nCc:/ism) {
> > > >>
> > > >> Greedy operators are only supported with perl 5.10 or more... I think
> > > >> it's a bad idea to use them...

Possessive quantification is supported in much earlier versions of Perl, it’s just more awkward syntactically:

    /^To:(?>\s*)(.+)\s*\nCc:/ism

But possessification is not going to make a difference in this regex, since .+ can match anything that \s* can also match, so the only difference is that if the regex does happen to backtrack, it will backtrack over all the spaces after the To: at once instead of one at a time.

I have only just subscribed so I do not have enough context to know what the problem is, but based on what I have seen so far it seems to me that all you want is simply

    /^To:\s?(.+)\s*\nCc:/ism

although I have to wonder if the /s modifier here is really what you want.

> I think the correct term for *+, ++, ?+ etc is "possessive"
> quantifiers, I'm just not sure.
That is correct.
Regards,
-- 
Aristotle Pagaltzis // <http://plasmasturm.org/>
Previous: Francis GaliegueNext: Tait
Message 9 of 17 in “git send-email: edit recipient addresses with the --compose flag”
  1. git send-email: edit recipient addresses with the --compose flagIan Hilt, Nov 9, 2008
  2. Francis GaliegueNov 9, 2008
  3. Ian HiltNov 9, 2008
  4. Junio C HamanoNov 9, 2008
  5. Ian HiltNov 10, 2008
  6. Junio C HamanoNov 10, 2008
  7. Ian HiltNov 10, 2008
  8. Francis GaliegueNov 10, 2008
  9. Aristotle PagaltzisNov 10, 2008
  10. TaitNov 11, 2008
  11. Francis GaliegueNov 11, 2008
  12. Ian HiltNov 11, 2008
  13. Ian HiltNov 11, 2008
  14. Francis GaliegueNov 11, 2008
  15. TaitNov 11, 2008
  16. Francis GaliegueNov 10, 2008
  17. Francis GaliegueNov 10, 2008

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