Menhir/ocamlyacc support

[kit-ty-kate]

Currently, tuareg doesn't support .mly files very well. The highlight works fine but the automatic indentation can be a bit wacky when it comes to rules. Is there a way to disable automatic indentation in .mly files or part of it (everything that is not in braces) ? I don't know how hard it would be to support it at least partly but maybe until ocp-indent comes-up with its own support (see
OCamlPro/ocp-indent#50), maybe it can be at least partially supported by tuareg if it's not too complicated.

[Chris00]

The current (git) version of Tuareg is not activated for .mly files. I plan to have a special (dual) mode for such files but I've had not time to investigate how to do that properly.

[pmetzger]

A special mode would be very appreciated. I don't know how to accomplish it, but it should probably switch between some mechanism to handle indentation of Menhir when outside of { } blocks, and the normal OCaml indentation when it is within them.

[monnier]

It should be reasonably easy to provide such a major mode as a "minor" tweak to Tuareg mode (i.e. reusing most of Tuareg's highlight and indentation rules, and adding some rules specific to .mly files). In sml-mode, I implemented such an sml-yacc-mode with about 3KB of code.

[monnier]

I've just pushed a primitive tuareg-menhir.el file to Tuareg's master branch. There's ample room for improvement, but at least now there's something on which to build.

[pmetzger]

Woot!

[pmetzger]

(So what's the easiest way to try this out?)

[Chris00]

Try melpa or install the Git version (opam pin...).

[pmetzger]

Would it be possible to do a new release with tuareg-menir.el in it?

[Chris00]

Release in progress: ocaml/opam-repository#12627