Re: comment / uncomment region

[Kevin Rodgers]

Pascal Bourguignon wrote:
> Yes, that's because comment-start is a buffer-local variable.
> You have to set it in your grammar buffer.
>
> You can do it manually with:
>
>     M-x eval-expression RET (setq comment-start "//") RET
>
> or rather:
>
>     M-x set-variable    RET comment-start RET "//" RET
>
>
> You could put this at the end of each of your grammar files:
>
> // Local Variables:
> // comment-start: "//"
> // End:
>
> Or, if you don't want to program a mode for your grammar files you
> could have a find-file-hook that would check the file type (or file
> name extension) and would initialize the buffer environment when it
> finds that a grammar is being opened. Something like:
>
> (add-hook 'find-file-hook
>      (lambda ()
>         (when (string-match "\\.grammar$" (buffer-file-name))
>            (setf comment-start "//")
>            ;; ...
>            )))

Those are all good suggestions, but I would recommend trying out
define-generic-mode: you can define your own major mode just by
specifying 6 values, most of which are just lists of strings
(keywords, etc.).

--
Kevin Rodgers