D15835: avoid that the main context can be #poped

[Christoph Cullmann]

cullmann created this revision.
cullmann added a reviewer: dhaumann.
Herald added projects: Kate, Frameworks.
Herald added subscribers: kde-frameworks-devel, kwrite-devel.
cullmann requested review of this revision.

REVISION SUMMARY
  avoids that the main context can be #poped
  + ensure we abort the switching loop if we arrive at it

TEST PLAN
  make && make test

REPOSITORY
  R216 Syntax Highlighting

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D15835

AFFECTED FILES
  src/lib/abstracthighlighter.cpp
  src/lib/state.cpp
  src/lib/state_p.h

To: cullmann, dhaumann
Cc: kwrite-devel, kde-frameworks-devel, michaelh, kevinapavew, ngraham, bruns, demsking, cullmann, sars, dhaumann
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