Inconsistent syntax highlighting of transition properties about language-css HOT 2 CLOSED

The case insensitive flag on the regex in grammars/css.cson#L625 seems to be the cause of this issue (there's a Background in the pattern next line).

Removing the case insensitive flag would fix the incorrectly identified deprecation of background as a transition-property but would cause other issues when the deprecated CSS2 system colors might not get detected. It was allowed by the spec to use these system colors as all lowercase too.

A better solution would be to rewrite the regex in question to match the scenarios in which the deprecated CSS2 system colors might have been used. Unfortunately I'm not familiar enough with the grammar syntax or the deprecated spec to do this.

Another solution could be dropping off the CSS2 system color detection as irrelevant. I don't have any statistics to back this up, but these system color properties probably weren't very widely used, and they certainly aren't today.

I was going to create a PR to remove the case insensitive flag from the regex, but perhaps this needs a bit more discussion first.

from language-css.

same problem

from language-css.