`diff-mode' shows no colors

`diff-mode' shows no colors

[Lluís]

I'm using emacs 24.2.1 (debian's unstable emacs24 package) and observed that the
faces in `diff-mode', which should show some nice colors, are instead all shown
in grayscale.

After looking at the definition of some of these faces, it looks like the
`(min-colors 88)' condition is applying, leaving all of diff-mode in shades of
grey (the ones applying for dark background). Even starting with -q or -Q is not
enough to get diffs with color (which I had for some time).

Is there any way I can debug why exactly is this happening?


Thanks,
  Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth

Re: `diff-mode' shows no colors

[Chong Yidong]

Lluís <xscript@gmx.net> writes:

> I'm using emacs 24.2.1 (debian's unstable emacs24 package) and
> observed that the faces in `diff-mode', which should show some nice
> colors, are instead all shown in grayscale.
>
> After looking at the definition of some of these faces, it looks like
> the `(min-colors 88)' condition is applying, leaving all of diff-mode
> in shades of grey (the ones applying for dark background). Even
> starting with -q or -Q is not enough to get diffs with color (which I
> had for some time).

(min-colors 88) actually specifies the full-color version (I have no
ideas why Emacs uses the number 88 for this).  Emacs < 24.3 uses grey
for highlighting; just customize the faces if you want something more
colorful.  Emacs 24.3 will use the standard red/green color scheme.

Re: `diff-mode' shows no colors

[Lluís]

Chong Yidong writes:

> Lluís <xscript@gmx.net> writes:
>> I'm using emacs 24.2.1 (debian's unstable emacs24 package) and
>> observed that the faces in `diff-mode', which should show some nice
>> colors, are instead all shown in grayscale.
>> 
>> After looking at the definition of some of these faces, it looks like
>> the `(min-colors 88)' condition is applying, leaving all of diff-mode
>> in shades of grey (the ones applying for dark background). Even
>> starting with -q or -Q is not enough to get diffs with color (which I
>> had for some time).

> (min-colors 88) actually specifies the full-color version (I have no
> ideas why Emacs uses the number 88 for this).  Emacs < 24.3 uses grey
> for highlighting; just customize the faces if you want something more
> colorful.  Emacs 24.3 will use the standard red/green color scheme.

Ok, I tried with the emacs-snapshot package (24.2.50) and it does show colors
indeed. The "problem" was that the full-color version in 24.2.1 uses shades of
gray in the full-color version.

Sorry for the noise.


Thanks,
  Lluis

-- 
 "And it's much the same thing with knowledge, for whenever you learn
 something new, the whole world becomes that much richer."
 -- The Princess of Pure Reason, as told by Norton Juster in The Phantom
 Tollbooth