Why does that happen and what can be done about it?
closed as too localized by Martijn Pieters, Toon Krijthe, Bart, Mat, animuson Oct 6 '12 at 16:11
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It has happened because the parser couldn't decide what language this is, so can't figure out what syntax highlighting algorithm to use.
The question is not tagged with a specific language - if it were tagged with the language, that would be a good hint for the highlighter.
There are also highlight hints that can be added.