Re: glitches with font-lock-add-keywords

[martin rudalics <rudalics@gmx.at>]

 > (defvar my-extra-keywords
 >   '(("\\<\\(FIXME\\):" 1 font-lock-warning-face prepend)
 >     ("\\<\\(XXX\\|xxx\\|???\\|(sp?)\\)\\>" . font-lock-keyword-face)))
 >
 > The strings "XXX" and "xxx" are the only ones which are colorized at
 > all, showing up as magenta.  I would like all of them to be something
 > more striking, like lime-green.  Is there a table or some sort of
 > "translation" which can be used to determine what actual color names
 > correspond to vars like "font-lock-warning-face" and
 > "font-lock-keyword"?  Or, better, can actual color names be used
 > instead, and if so, where would I find a table or listing of them?

(defface my-extra-face '((t (:foreground "LimeGreen")))
   "My extra face.  Pick your favorite group on the next line."
   :group 'basic-faces)

 > Secondly: None of the strings containing a '?' are colorized at all
 > (they're just black, the same as "normal" text); I understand that '?'
 > is a special character in elisp and so requires some minor syntactical
 > gymnastics to induce emacs to treat it as a regular character.  So what
 > is the syntax I should use for that here?

Assuming that the question mark is a symbol constituent and "(" and ")"
are open and close parenthesis characters you can try:

(defvar my-extra-keywords
   '(("\\<\\(FIXME\\):" 1 font-lock-warning-face prepend)
     ("\\<\\(XXX\\|xxx\\)\\>\\|\\_<\\(\\?\\?\\?\\)\\_>\\|(sp\\?)" . 'my-extra-face)))