[Bug 1342175] [NEW] [upstream] Poor performance with find & replace with empty value on large data set

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[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

** Affects: df-libreoffice
     Importance: Medium
         Status: Confirmed

** Affects: libreoffice (Ubuntu)
     Importance: Medium
     Assignee: Seyeong Kim (xtrusia)
         Status: Triaged


** Tags: patch
-- 
[upstream] Poor performance with find & replace with empty value on large data set
https://bugs.launchpad.net/bugs/1342175
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