jashkenas/coffee-script — comment on commit 3fb064f274875b84cc7636f33cb7ee24868f3c31
File: src/lexer.coffee line 159
By michaelficarra:

@geraldalewis: try this one out instead: `/^(?:\\\\|[^\\])*\\(?:|[0-7]|[0-3][0-7])[0-7]/`