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

David Stults vor 9 Jahren aktualisiert von Fredrik Ehnbom vor 9 Jahren 1

$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