D9494: Highlighting indexer: Warn about empty attributes

[Dominik Haumann]

dhaumann created this revision.
dhaumann added a reviewer: vkrause.
Restricted Application added a project: Frameworks.
Restricted Application added a subscriber: Frameworks.

REVISION SUMMARY
  This patch extends the highlighting indexer to search for
  attribute="". Referencing an empty attribute is most likely
  an error.
  
  In fact, this check finds one issue, and one false positive.
  Still, it's better to fix it properly to ensure conformance.

TEST PLAN
  make test

REPOSITORY
  R216 Syntax Highlighting

BRANCH
  CheckEmptyAttribute (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D9494

AFFECTED FILES
  data/syntax/d.xml
  data/syntax/puppet.xml
  src/indexer/katehighlightingindexer.cpp

To: dhaumann, vkrause
Cc: #frameworks
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