customizing syntax highlighting of variable and function usage in C and C++ mode

customizing syntax highlighting of variable and function usage in C and C++ mode

[Geralt]

Hi,

is it possible to customize the syntax highlighting of function calls
and the usage of variables in C and C++ mode? By setting
(font-lock-variable-name-face ((t (:foreground "#eeeeec" :italic t))))
(font-lock-function-name-face ((t (:foreground "#edd400" :bold t
:underline t))))

in my color-theme only the declarations/definitions are affected.

In shell-script-mode all variables are affected (i.e. in every
context), but functions not at all (i.e. not even in their
definitons).



Thanks.

Re: customizing syntax highlighting of variable and function usage in C and C++ mode

[Geralt]

Since nobody has replied I suppose that this is not possible, am I correct?

Re: customizing syntax highlighting of variable and function usage in C and C++ mode

[Joe Schafer]

Geralt <usr.gentoo@googlemail.com> writes:

> Since nobody has replied I suppose that this is not possible, am I
> correct?

The default font-lock faces might not be affecting the text.  You can
check to see what face font-lock uses on some text by typing \C-x= at
the point of the text.  This runs `what-cursor-position'.  But what you
have is similar to what I have.  Are you sure the rest your color-theme
definition is correct?

(font-lock-function-name-face ((t ( :foreground "palegreen3"))))

Re: customizing syntax highlighting of variable and function usage in C and C++ mode

[tyler]

Joe Schafer <joesmoe10@gmail.com> writes:

> Geralt <usr.gentoo@googlemail.com> writes:
>
>> Since nobody has replied I suppose that this is not possible, am I
>> correct?
>
> The default font-lock faces might not be affecting the text.  You can
> check to see what face font-lock uses on some text by typing \C-x= at
> the point of the text.  This runs `what-cursor-position'.  But what you
> have is similar to what I have.  Are you sure the rest your color-theme
> definition is correct?
>
> (font-lock-function-name-face ((t ( :foreground "palegreen3"))))
>

I can confirm the OP's observation on Emacs 23. Running emacs -Q and
opening a .c file, with a code snippet like the following:

  int minrow, mincol, majrow, majcol, i; /*counters*/
  int inputvalue, outputvalue, changecount;

  changecount = 0;

The declaration rows are nicely coloured, but the following line
('changecount = 0') is not. Variable names in the declaration lines are
subject to font-lock-variable-name-face, while the variable name outside
of the declaration is given the default font. So, at least on my setup,
you can modify the font-lock for declarations, but not for subsequent
occurrences of the variable (or function). At least, not without some
further modification of the color-theme.


Tyler


-- 
There is something fascinating about science. One gets such wholesale 
returns of conjecture out of such a trifling investment of fact.
                                       --Mark Twain