GNU bug report logs - #24667
AUCTeX citation color

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From: Mosè Giordano <mose <at> gnu.org>
To: Travis Knepp <travis.n.knepp <at> nasa.gov>
Cc: 24667 <at> debbugs.gnu.org
Subject: bug#24667: AUCTeX citation color
Date: Wed, 12 Oct 2016 01:41:08 +0200

Hi Travis,

2016-10-11 12:49 GMT+02:00 Travis Knepp <travis.n.knepp <at> nasa.gov>:
> Coloring of citations (when using \citep, \citet, etc. as opposed to just
> using \cite) is not properly working.  Details from the stackexchange post
> (http://emacs.stackexchange.com/questions/27591/auctex-citation-color) are
> here:
>
>
>
> When inserting a reference in a LaTeX document (using Auctex) I normally
> type:
>
> \cite{joebob_2010}
>
> where "\cite" shows up in blue font, while "joebob_2010" shows up
> reddish/purple. I like this coloring. However, when I use
>
> \citep{joebob_2010}
>
> all text shows up white.
>
> In my .emacs file I put:
>
> (add-hook 'LaTeX-mode-hook
>     (lambda ()
>       (font-lock-add-keywords nil   '(("\\(\\\\citep\\)\\s-*{" 1
> font-lock-keyword-face t)))
>       (font-lock-add-keywords nil   '(("\\(\\\\citet\\)\\s-*{" 1
> font-lock-keyword-face t)))
>       ))
>
> This changed the color of "\citep" to blue, but the reference to
> "joebob_2010" remains white. Can I modify this to have the same coloring as
> "\cite{joebob_2010}"?

you can find the answer in the documentation ( (info
"(auctex)Fontification of macros") or
https://www.gnu.org/software/auctex/manual/auctex.html#Fontification-of-macros):

    Highlighting of macros can be customized by adapting keyword lists
    which can be found in the customization group `font-latex-keywords'.

Thus, you have to issue M-x customize-group RET font-latex-keywords
RET and then add to the "Font Latex Match Reference Keywords" variable
the new entry with "citep" (without quotes) as "keyword" field and
"*[[{" (without quotes) as "format" field.  If you want instead to
write some Elisp, you can put this

--8<---------------cut here---------------start------------->8---
(font-latex-add-keywords
 '(("citep" "*[[{"))
 'reference)
--8<---------------cut here---------------end--------------->8---

inside the hook.

Out of curiosity, do you use natbib or jurabib packages?  If you have
parsing enabled, you should automatically get fontification of citep
macro.

Bye,
Mosè

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