Alex,

thank you so much for your help

2016-04-16 13:52 GMT+02:00 Alex Kost <alezost@gmail.com>:

>
> OK, this theme shouldn't cause the difference in brightness, I think.  I
> have another guess.  Does Fedora use "site-start.el"?  If so, this file
> is not loaded by Guix's Emacs, because it is placed somewhere in
> /usr/share/... and Guix's Emacs doesn't look at this directory (also our
> emacs uses its own "site-start.el" to load emacs packages installed in
> "~/.guix-profile").
>
> You can check if Fedora's Emacs uses "site-start.el" with this:
>
>   M-x find-library site-start
>

Yes, the Fedora Emacs has this site-start

;;; loaded before user's ".emacs" file and default.el

;; load *.el and *.elc in /usr/share/emacs/site-lisp/site-start.d on startup
(mapc
 'load
 (delete-dups
  (mapcar 'file-name-sans-extension
          (directory-files
           "/usr/share/emacs/site-lisp/site-start.d" t "\\.elc?\\'"))))
(setq source-directory "/usr/share/emacs/24.5/")




and the Guix Emacs has

(require 'guix-emacs nil t)





>
> But actually I don't understand how the difference in brightness can
> happen at all.  This is a mystery for me.
>
> > There are text properties here:
> >   face                 variable-pitch
>
> You can move the point to 'variable-pitch' button and press RET there to
> find out if it has the same customization in both cases.
>

This is the same for both Emacses

Face: variable-pitch (sample) (customize this face)

Documentation:
The basic variable-pitch face.

Defined in `faces.el'.

           Family: Sans Serif
          Foundry: unspecified
            Width: unspecified
           Height: unspecified
           Weight: unspecified
            Slant: unspecified
       Foreground: unspecified
DistantForeground: unspecified
       Background: unspecified
        Underline: unspecified
         Overline: unspecified
   Strike-through: unspecified
              Box: unspecified
          Inverse: unspecified
          Stipple: unspecified
             Font: unspecified
          Fontset: unspecified
          Inherit: unspecified

[back]



>
> > And this is the Fedora Emacs
> [...]
> >     xft:-PfEd-DejaVu
> > Sans-normal-normal-normal-*-19-*-*-*-*-0-iso10646-1 (#x56)
>
> OK, so Fedora's Emacs has a bigger font (19 against 13).
>
> You can use something like this to set the font and its size:
>
>   (set-frame-font "DejaVu Sans Mono-15" nil t)
>

you were spot on on this ! In fact evaluating this line made the Guix Emacs
window exactly equal to the one of the Fedora Emacs !


>
> > But anyway, I made a little screenshot with Shutter just to make the
> > difference between the minibuffers more evident
>
> This should be fixed if you change the font size.
>

Right ! Even the minibuffer now is reasonably large and readable !


> Another thing: I noticed that Guix's Emacs doesn't display some buttons
> on the tool bar.  This should probably (I'm not sure) be fixed by
> installing some icon theme in your profile, for example
> 'adwaita-icon-theme'.
>
>
I installed this adwaita thing but the icons keep not being there

Also the Fedora Emacs keeps being a bit brighter

But that's not that bad ! The showstopper was the tiny tiny minibuffer

And if that's a mistery to you, go figure what it is to me ;-)

Thanks for your help ;-)