text displayed in the header line with wrong faces

text displayed in the header line with wrong faces

[Ernest Adrogué]

Hi there,

Face attributes appear to be interpreted differently in the window
header line than in other parts of the window.  For instance, if I
evaluate

(setq header-line-format
      '(:eval (propertize "abcdefghijklmnopqrstuvwxyz"
                          'face 'show-paren-match)))

the text in the header line is displayed in what seems to be reverse
video: http://i.imgur.com/BU0XmGm.png

This doesn't happen if I disable the theme that I'm using (namely
solarized, which can found here:
https://github.com/sellout/emacs-color-theme-solarized/).  Without a
theme, background and foreground colours are not swapped, although I
noticed that then the foreground colour property is not inherited.

Any pointers on what could be causing this?

Cheers.

Re: text displayed in the header line with wrong faces

[Alex Kost]

Ernest Adrogué (2016-12-20 11:25 +0100) wrote:

> Hi there,
>
> Face attributes appear to be interpreted differently in the window
> header line than in other parts of the window.  For instance, if I
> evaluate
>
> (setq header-line-format
>       '(:eval (propertize "abcdefghijklmnopqrstuvwxyz"
>                           'face 'show-paren-match)))
>
> the text in the header line is displayed in what seems to be reverse
> video: http://i.imgur.com/BU0XmGm.png
>
> This doesn't happen if I disable the theme that I'm using (namely
> solarized, which can found here:
> https://github.com/sellout/emacs-color-theme-solarized/).  Without a
> theme, background and foreground colours are not swapped, although I
> noticed that then the foreground colour property is not inherited.
>
> Any pointers on what could be causing this?

I can't reproduce this behavior.  For me, it displays a usual
'show-paren-match' face.  I tried some other faces, and I also tried
with "emacs -Q", and every time I got expected colors (but I didn't try
that particular theme).

Perhaps the problem is that "emacs-color-theme-solarized" is a so-called
"color theme", not "custom theme" which is supported by Emacs 24 and
above.  Did you try with any custom theme (displayed in "M-x
customize-themes")?

There is <https://github.com/bbatsov/solarized-emacs> which is probably
similar (I don't know though as I don't use it) but it is "custom".

-- 
Alex

Re: text displayed in the header line with wrong faces

[Ernest Adrogué]

2016-12-20, 16:04 (+0300); Alex Kost escriu:
> Ernest Adrogué (2016-12-20 11:25 +0100) wrote:
> 
> > Hi there,
> >
> > Face attributes appear to be interpreted differently in the window
> > header line than in other parts of the window.  For instance, if I
> > evaluate
> >
> > (setq header-line-format
> >       '(:eval (propertize "abcdefghijklmnopqrstuvwxyz"
> >                           'face 'show-paren-match)))
> >
> > the text in the header line is displayed in what seems to be reverse
> > video: http://i.imgur.com/BU0XmGm.png
> >
> > This doesn't happen if I disable the theme that I'm using (namely
> > solarized, which can found here:
> > https://github.com/sellout/emacs-color-theme-solarized/).  Without a
> > theme, background and foreground colours are not swapped, although I
> > noticed that then the foreground colour property is not inherited.
> >
> > Any pointers on what could be causing this?
> 
> I can't reproduce this behavior.  For me, it displays a usual
> 'show-paren-match' face.  I tried some other faces, and I also tried
> with "emacs -Q", and every time I got expected colors (but I didn't try
> that particular theme).
> 
> Perhaps the problem is that "emacs-color-theme-solarized" is a
> so-called "color theme", not "custom theme" which is supported by
> Emacs 24 and above.  Did you try with any custom theme (displayed in
> "M-x customize-themes")?

It's a custom theme (it shows up when I do M-x customize-themes).  They
include a "color theme" version as well, but I'm not using it.

This is a simpler test:

(let ((cyan "#2aa198") (white "#ffffff"))
  (setq header-line-format
        (propertize
         "abcdefghijklmnopqrstuvwxyz"
         'face `(:foreground ,cyan :background ,white))))
         
It displays cyan text on white when I select any custom theme other than
solarized, tsdh-dark or tsdh-light (the latter two are bundled with
Emacs, I think) and white text on cyan background when I select one of
those.

Cheers.

Re: text displayed in the header line with wrong faces

[Eli Zaretskii]

> Date: Tue, 20 Dec 2016 15:57:26 +0100
> From: Ernest Adrogué <nfdisco@gmail.com>
> 
> (let ((cyan "#2aa198") (white "#ffffff"))
>   (setq header-line-format
>         (propertize
>          "abcdefghijklmnopqrstuvwxyz"
>          'face `(:foreground ,cyan :background ,white))))
>          
> It displays cyan text on white when I select any custom theme other than
> solarized, tsdh-dark or tsdh-light (the latter two are bundled with
> Emacs, I think) and white text on cyan background when I select one of
> those.

The header-line face, as defined in faces.el, inherits from mode-line,
and mode-line has the inverse-video attribute set.  When a theme
specifies both foreground and background colors for the mode-line
face, those colors specify the face completely, so the inverse-video
attribute is disabled.  But the themes you mention as deviant specify
only one of the two colors, so the inverse-video attribute stays.

You can see all this if you invoke customize-face.

Re: text displayed in the header line with wrong faces

[Ernest Adrogué]

2016-12-20, 20:36 (+0200); Eli Zaretskii escriu:
> > Date: Tue, 20 Dec 2016 15:57:26 +0100
> > From: Ernest Adrogué <nfdisco@gmail.com>
> > 
> > (let ((cyan "#2aa198") (white "#ffffff"))
> >   (setq header-line-format
> >         (propertize
> >          "abcdefghijklmnopqrstuvwxyz"
> >          'face `(:foreground ,cyan :background ,white))))
> >          
> > It displays cyan text on white when I select any custom theme other than
> > solarized, tsdh-dark or tsdh-light (the latter two are bundled with
> > Emacs, I think) and white text on cyan background when I select one of
> > those.
> 
> The header-line face, as defined in faces.el, inherits from mode-line,
> and mode-line has the inverse-video attribute set.  When a theme
> specifies both foreground and background colors for the mode-line
> face, those colors specify the face completely, so the inverse-video
> attribute is disabled.  But the themes you mention as deviant specify
> only one of the two colors, so the inverse-video attribute stays.
> 
> You can see all this if you invoke customize-face.

Actually, I think that these themes simply customize the header-line
face and set the inverse-video attribute.  It didn't occur to me that
this could matter, since the header-line face isn't used explicitly.

Thanks!