D18862: Fix crash when extending selection

[Martin Tobias Holmedahl Sandsmark]

sandsmark created this revision.
sandsmark added reviewers: hindenburg, pavelkh, ngraham.
Herald added a project: Konsole.
Herald edited subscribers, added: konsole-devel; removed: Konsole.
sandsmark requested review of this revision.

REVISION SUMMARY
  When doing word selection use the previous selection anchor if the new one is out of bounds (user scrolled out of view or similar).
  
  A more proper (but still not really proper) fix than b85bbaa8c8807ab3619cddc35b634c2bb43e09fb <https://phabricator.kde.org/R319:b85bbaa8c8807ab3619cddc35b634c2bb43e09fb> reverted by 213afc0e0ceebc88c90552cd91fa8680e54603ed <https://phabricator.kde.org/R319:213afc0e0ceebc88c90552cd91fa8680e54603ed>
  
  I have a branch refactoring the word selection stuff a bit, but it's a bit more invasive. This is the minimal change I could get to fix it.

TEST PLAN
  see b85bbaa8c8807ab3619cddc35b634c2bb43e09fb <https://phabricator.kde.org/R319:b85bbaa8c8807ab3619cddc35b634c2bb43e09fb> 213afc0e0ceebc88c90552cd91fa8680e54603ed <https://phabricator.kde.org/R319:213afc0e0ceebc88c90552cd91fa8680e54603ed> 914067d14a6a27b59bba1c53cc18cb67eb9811fc <https://phabricator.kde.org/R319:914067d14a6a27b59bba1c53cc18cb67eb9811fc>

REPOSITORY
  R319 Konsole

REVISION DETAIL
  https://phabricator.kde.org/D18862

AFFECTED FILES
  src/TerminalDisplay.cpp

To: sandsmark, hindenburg, pavelkh, ngraham
Cc: konsole-devel, maciejn, thsurrel, ngraham, maximilianocuria, hindenburg
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