case-insensitive regexp in derived-mode

case-insensitive regexp in derived-mode

[jfjfcli]

Following this tutorial
http://ergoemacs.org/emacs/elisp_syntax_coloring.html

Now my keywords are working, but the regexp to colour keyword is case insensitive.

I was able to get it to work by evaluating
(setq font-lock-keywords-case-fold-search t) 
after loading the custom mode into that buffer.

However no matter where I put it in the .el file of the custom mode, I cannot to work automatically.

The documentation also says "You can use case-fold in font-lock-defaults to specify the value of font-lock-keywords-case-fold-search which says whether search-based fontification should be case-insensitive."

any help would be great, thanks. 

Re: case-insensitive regexp in derived-mode

[Emanuel Berg]

jfjfcli@gmail.com writes:

> I was able to get it to work by evaluating (setq
> font-lock-keywords-case-fold-search t) after loading
> the custom mode into that buffer.
>
> However no matter where I put it in the .el file of
> the custom mode, I cannot to work automatically.

The documentation also says: "Automatically becomes
buffer-local when set." So perhaps your setting got
overruled along the way.

Try:

(set-default 'font-lock-keywords-case-fold-search t)

I don't know if you want that, but if it works, you
know where the first attempt failed.

-- 
underground experts united:
http://user.it.uu.se/~embe8573

Re: case-insensitive regexp in derived-mode

[jfjfcli]

Le dimanche 27 avril 2014 19:38:11 UTC-4, Emanuel Berg a écrit :

> 
> Try:
> 
> 
> 
> (set-default 'font-lock-keywords-case-fold-search t)
> 
> 

That fixed my issue Thanks a lot!

Re: case-insensitive regexp in derived-mode

[Jacob Gerlach]

> Now my keywords are working, but the regexp to colour keyword is case insensitive.

The tutorial shows:
(define-derived-mode math-lang-mode fundamental-mode
  (setq font-lock-defaults '(myKeywords))
  (setq mode-name "math lang")
)

If you look at the documentation for font-lock-defaults (C-h v font-lock-defaults <RET>), you will see an option for case-fold-search when specifying font-lock-defaults, so you instead want to use something like:

(setq font-lock-defaults '(myKeywords nil t))

The tutorials I read led me to use setq-local, but perhaps this is unnecessary, since as Emmanuel pointed out, it automatically becomes buffer local when set.