Re: set font for TODO

[Stefan Monnier <monnier@iro.umontreal.ca>]

> (defun fluca1978/fontify-fixme ()
>   (font-lock-add-keywords
>    nil '(("\\<\\(FIX\\|TODO\\|FIXME\\|HACK\\|REFACTOR\\|XXX\\)[ \t\s\n:]*"
>           1 fluca1978-programming-fixme-face t))))
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This part of a font-lock-keyword is supposed to be an expression that,
when evaluated, returns the face to use.  So it will signal an error
"fluca1978-programming-fixme-face is void" because there is no
fluca1978-programming-fixme-face variable.
IOW you need to add a quote in front of it.

> The result is that nothing is emphasized. Moreover if I write, for
> instance, FIXME (without the colon) I get the following words
> un-fontified, as if the regular expression was wrong. What am I
> missing?

When this happens, check your *Messages* buffer.  It will probably
contain the error message.

The best way to debug those things is:

   (setq font-lock-support-mode nil)
   (setq debug-on-error t)

and then try again (turning font-lock-mode off and then back on after
applying the setting).  This will make font-lock happen "synchronously"
rather than via jit-lock, so it will signal errors which debug-on-error
can catch.


        Stefan