Subject: Re: bug#15294: 24.3.50; js2-mode parser is several times slower in lexical-binding mode

From: Stefan Monnier <[email-masked]>
Date: Sun, 08 Sep 2013 18:32:02 -0400

A first likely candidate is the bunch of `catch/throw' in js2-get-token,
since catch, unwind-protect and condition-case are all implemented in
the bytecode interpreter in ways which don't work well for
lexical scoping.

        Stefan "Just reporting on his little progress"