Controlling font styles in latex-mode

Controlling font styles in latex-mode

[Ramesh Sridharan]

I was wondering how to tell emacs not to allow style changes that
change font face. In particular, latex-mode causes a number of changes
I don't like:

- Text inside of a \section{} or \subsection{} block is bigger and
variable-width
- Superscripts and subscripts are shown in superscript or subscript,
making them smaller.

I find syntax highlighting very useful, so I don't want to disable
font-lock altogether. Is there any way to prevent changes to the font
size or face (i.e. I don't want anything to become bigger, smaller, or
change in font, but color changes are OK)?

I've tried (setq font-lock-maximum-decoration X) with X as nil and t,
but nil is too little (i.e. it completely gets rid of syntax
highlighting), and t is too much (i.e. it's overly decorated as
described above). Here are the relevant (i.e. non-comment) lines of my
.emacs:
;;;;;;;;;;;;
(modify-frame-parameters nil '((wait-for-wm . nil)))
(set-background-color "black")
(set-foreground-color "white")
(set-cursor-color "white")
(global-font-lock-mode t)
(show-paren-mode)
;;;;;;;;;;;;

I'm using emacs 22.2.1 on Debian (lenny).

Thanks,
Ramesh

Re: Controlling font styles in latex-mode

[Peter Dyballa]

Am 17.04.2010 um 18:44 schrieb Ramesh Sridharan:

> I find syntax highlighting very useful, so I don't want to disable
> font-lock altogether. Is there any way to prevent changes to the font
> size or face (i.e. I don't want anything to become bigger, smaller, or
> change in font, but color changes are OK)?

Customisation? (Point in that face, C-u x =, in *Help* buffer follow  
the hyper-link, save for session, save for the remainder of your life.  
No, this won't work, you're working with software from last  
millennium! I think... M-x describe-face RET should work.)

Or extract some code from tex-mode.el and put it into your init file.

--
Greetings

   Pete

Theory and practice are the same, in theory, but, in practice, they  
are different.

Re: Controlling font styles in latex-mode

[Steve Revilak]

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>From: Ramesh Sridharan <ramesh.eecs@gmail.com>

>I was wondering how to tell emacs not to allow style changes that
>change font face. In particular, latex-mode causes a number of changes
>I don't like:
>
>- Text inside of a \section{} or \subsection{} block is bigger and
>variable-width
>- Superscripts and subscripts are shown in superscript or subscript,
>making them smaller.
    ...
>I'm using emacs 22.2.1 on Debian (lenny).

You should be able to make most of the changes with M-x
customize-face.  For example, to change the appearance of text within
\section{...}, 

   - put point in the \section{...} name (i.e. between the braces)
   - M-x customize-face

Then change the face to suit your taste.

IIRC emacs-22 gives you the ability to change the face of superscript
and subscript characters, but the raise/lower amounts are hardwired
into tex-mode.el.  For example, I have a copy of emacs-22.3 where
(defun tex-font-lock-suscript) in tex-mode.el ends with the following
code:

     (if (eq (char-after pos) ?_)
         '(face subscript display (raise -0.3))
       '(face superscript display (raise +0.3))))

The only way I was able to prevent the raising (lowering) of
superscript (subscript) characters in emacs 22, was by changing the
`raise' amounts to 0.0, and then byte-recompiling tex-mode.el.  The
process was something like this

  - mv tex-mode.el.gz tex-mode.el.gz.ORIG

  - mv tex-mode.elc tex-mode.elc.ORIG

  - gunzip -c < tex-mode.el.gz.ORIG > tex-mode.el

  - edit tex-mode.el.  Change the raise amounts from -0.3 (or +0.3) to
    0.0

  - byte compile the modified tex-mode.el.  dired's `B' command does
    this (but there are other ways)

Emacs-23 adds a new variable, tex-font-script-display, which controls
the raise/lower amounts, and eliminates the need to modify
tex-mode.el.

Steve

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