[Bug 1456195] Re: Zero-minimum possessive groups does not match empty string

[Marc Deslauriers]

Thanks for the patch. Could you please prepare a debdiff for trusty and
wily suitable for sponsoring as an SRU?

Thanks!

** Also affects: pcre3 (Ubuntu Wily)
   Importance: Undecided
       Status: New

** Also affects: pcre3 (Ubuntu Xenial)
   Importance: Medium
       Status: New

** Also affects: pcre3 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: pcre3 (Ubuntu Xenial)
       Status: New => Fix Released

** Changed in: pcre3 (Ubuntu Trusty)
       Status: New => Confirmed

** Changed in: pcre3 (Ubuntu Wily)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1456195

Title:
  Zero-minimum possessive groups does not match empty string

Status in pcre3 package in Ubuntu:
  Fix Released
Status in pcre3 source package in Trusty:
  Confirmed
Status in pcre3 source package in Wily:
  Confirmed
Status in pcre3 source package in Xenial:
  Fix Released

Bug description:
  The 14.04/15.04 pcre version doesn't match some inputs with possessive
  qualfiers:

  $ echo '"a"'|pcregrep '("([^b"]*+(b.)?)*+")*+'
  $

  Earlier versions (10.04, 12.04):
  $ echo '"a"'|pcregrep '("([^b"]*+(b.)?)*+")*+'
  "a"
  $

  this is fixed with the following upstream commit (that applies cleanly
  to the 15.04 pcre):

  http://vcs.pcre.org/pcre?view=revision&revision=1478

  https://lists.exim.org/lurker/message/20140527.131833.2fd7547c.html

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