[MLton-user] effectively tracking MLton error locations with emacs

[Matthew Fluet]

Could you post (or wiki) the emacs code for this?  I didn't know anybody
had written an error parser for MLton.

> Maybe lots of people know this, but it was new to me.
>
> An annoying problem that I have when using emacs functions to
> automatically put the cursor at an error is that when visiting
> multiple errors, once I edit the file, subsequent error locations are
> off slightly (or even a lot) due to the edits.  I have to manually
> look around to match up the error message text with the code.
>
> It occurred to me today that a simple change to how the interaction
> with emacs is done solves this problem.  Now, my emacs error
> processing code looks at all the error messages that MLton outputs
> (before I do any editing), and creates a marker for each one.  Then,
> when I edit the code, emacs keeps track of the markers, and visiting
> subsequent errors is as simple as visiting the marker.
>
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