Fix macro parser quadratic complexity in small repeating groups#52145

Merged

bors merged 2 commits intorust-lang:masterfrom

exphp-forks:drop-it-like-its-eof

Jul 17, 2018

Commits on Jul 7, 2018

fix perf issue in macro parser
ExpHP
committed

Commits on Jul 16, 2018

cleanup unnecessary else
ExpHP
committed