mozilla/rust — pull request #6825 by caitp (2013-05-30 04:41:26+00:00)
Title: Fixes #6824 - Correct scan_number() grammar

Show `int_suffix_size` to appear 0 or 1 times
Show `exponent | . dec_lit` to appear 0 or 1 times, to show why `3f;` is a valid number