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[Ubuntu Foundations Team Bug Bot <1342175@xxxxxxxxxxxxxxxxxx>]

The attachment "optimize_performance_after_replaceall.debdiff" seems to
be a debdiff.  The ubuntu-sponsors team has been subscribed to the bug
report so that they can review and hopefully sponsor the debdiff.  If
the attachment isn't a patch, please remove the "patch" flag from the
attachment, remove the "patch" tag, and if you are member of the
~ubuntu-sponsors, unsubscribe the team.

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** Tags added: patch

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https://bugs.launchpad.net/bugs/1342175

Title:
  [upstream] Poor performance with find & replace with empty value on
  large data set

Status in LibreOffice Productivity Suite:
  Confirmed
Status in “libreoffice” package in Ubuntu:
  Triaged

Bug description:
  [SRU justification]

  [Impact]

  Hang or Very slow performance after replaceall or searchall massive
  data

  Regression in Find and Replace with LO Calc 4.2 (last worked in 4.1).
  It now takes a long time to "Find and Replace" if the to be replaced
  is to nothing.

  See comment #5/#6 of upstream for reproducer.
  See commend #8 for bibisect.

  [Test Case]

  fill A column to 0
  select A column 

  Replace All 0 to " " ( null space )

  [Regression Potential]

  [Other Info]
  upstream patch

  http://cgit.freedesktop.org/libreoffice/core/commit/?id=1cf19ea84794ca065749667b480dfed2d27d47b7
  http://cgit.freedesktop.org/libreoffice/core/commit/?id=1e721077b43de84edab2a3ed2f316ddcbec6e3ec
  http://cgit.freedesktop.org/libreoffice/core/commit/?id=91502a72c12c559442e8bf77c27a516b49c2a68d

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