[MLton] mllex fails when actions include unbalanced parentheses

[Neophytos Michael]

It's a bug in mllex.  I fixed this bug and sent a patch to Matthias Blume a few
years ago.  I am pretty sure he incorporated it in SML/NJ's version of lex. 
Mlton's MLLex was perhaps forked before that time.  Maybe we should update our
mllex with the current one is SML/NJ.

Neophytos

--- Michael Norrish <Michael.Norrish@nicta.com.au> wrote:

> If something like the following is an MLLex action, then it gets
> confused and complains of a syntax error
> 
> "(" => (print "("; lex());
> 
> The version of MLlex from SML/NJ that I also have installed on my
> system doesn't have this problem. 
> 
> Michael.
> 
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