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Using a binary shift left ("<<") followed by a left parenthesis causes Perl syntax highlighting to fail.

David Stults 6 years ago • updated by Fredrik Ehnbom 6 years ago 1
Example:

$x = 1 << (32 - $y);

Everything after the ; will be colored yellow, no more syntax highlighting.
Sounds like it might be this bug: https://github.com/textmate/perl.tmbundle/issues/3