Supplied fontconfig causes serif font to be used in Evolution Preview Pane

[13rac1]

Supplied fontconfig causes serif font to be used in Evolution Preview Pane

[13rac1]

Please run the tests https://github.com/eosrei/emojione-color-font/tree/master/linux/tests It'll confirm whether your fontconfig is setup correctly. You'll need both files.

[TamasBarta]

Results:

diff current-results.test expected-results.test
Font: sans                                                         Font: sans
Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: sans-serif                                                   Font: sans-serif
Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: serif                                                        Font: serif
VeraSe.ttf: "DejaVu Serif" "Roman"                              |  VeraSe.ttf: "Bitstream Vera Serif" "Roman"
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: mono                                                         Font: mono
VeraMono.ttf: "DejaVu Sans Mono" "Roman"                        |  VeraMono.ttf: "Bitstream Vera Sans Mono" "Roman"
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: monospace                                                    Font: monospace
VeraMono.ttf: "DejaVu Sans Mono" "Roman"                        |  VeraMono.ttf: "Bitstream Vera Sans Mono" "Roman"
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: Bitstream Vera Sans                                          Font: Bitstream Vera Sans
DejaVuSans.ttf: "DejaVu Sans" "Book"                            |  Vera.ttf: "Bitstream Vera Sans" "Roman"
DejaVuSans-Bold.ttf: "DejaVu Sans" "Bold"                       |  EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: Bitstream Vera Serif                                         Font: Bitstream Vera Serif
DejaVuSerif.ttf: "DejaVu Serif" "Book"                          |  VeraSe.ttf: "Bitstream Vera Serif" "Roman"
DejaVuSerif-Bold.ttf: "DejaVu Serif" "Bold"                     |  EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: Bitstream Vera Sans Mono                                     Font: Bitstream Vera Sans Mono
DejaVuSansMono.ttf: "DejaVu Sans Mono" "Book"                   |  VeraMono.ttf: "Bitstream Vera Sans Mono" "Roman"
DejaVuSansMono-Bold.ttf: "DejaVu Sans Mono" "Bold"              |  EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"

Font: emoji                                                        Font: emoji
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"
Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"

Font: Emoji One Color                                              Font: Emoji One Color
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"
Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"

Font: Apple Color Emoji                                            Font: Apple Color Emoji
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"
Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"

Font: Segoe UI Emoji                                               Font: Segoe UI Emoji
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"
Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"

Font: Noto Color Emoji                                             Font: Noto Color Emoji
EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"             EmojiOneColor-SVGinOT.ttf: "Emoji One Color" "Regular"
Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"

Fontconfig tests: FAIL

I investigated a little more. Your fontconfig is stored as /etc/fonts/conf.avail/56-emojione-color-font.conf.

I also have 57-dejavu-sans.conf there:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "../fonts.dtd">
<!-- /etc/fonts/conf.d/57-dejavu-sans.conf

     Define aliasing and other fontconfig settings for
     DejaVu Sans.

     © 2006-2008 Nicolas Mailhot <nicolas.mailhot at laposte.net>
-->
<fontconfig>
  <!-- Font substitution rules -->
  <alias binding="same">
    <family>Arev Sans</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>Bepa</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>Bitstream Prima Sans</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>Bitstream Vera Sans</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>DejaVu LGC Sans</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>Hunky Sans</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>Olwen Sans</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>SUSE Sans</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <alias binding="same">
    <family>Verajja</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <!-- In case VerajjaPDA stops declaring itself as Verajja -->
  <alias binding="same">
    <family>VerajjaPDA</family>
    <accept>
      <family>DejaVu Sans</family>
    </accept>
  </alias>
  <!-- Generic name assignment -->
  <alias>
    <family>DejaVu Sans</family>
    <default>
      <family>sans-serif</family>
    </default>
  </alias>
  <!-- Generic name aliasing -->
  <alias>
    <family>sans-serif</family>
    <prefer>
      <family>DejaVu Sans</family>
    </prefer>
  </alias>
</fontconfig>

I'm groping in the dark, but I hope I managed to provide something useful.

[13rac1]

The 57-dejavu-sans.conf looks standard. I did a number of tests with @edgemaster in #29 to test this fontconfig, but I've personally only used it on Ubuntu/Fedora. The problem probably is, as you can see, something in your fontconfig is identifying Bitstream Vera incorrectly as DejaVu:

Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"

You could try changing the 56 to another number??? The output on your system needs to match the expected file. You can do tests with fc-match sans | head -n2 or similar to determine what is different in your fontconfig.

(I'm amazed how much hassle fontconfig has been. I thought making the font itself was going to be the most difficult part.)

[IgnoredAmbience]

Do you also have ttf-bitstream-vera installed? I've only got it marked as an optional dependency ("for bug-free font fallback") due to a previous comment on the AUR page complaining that it was a mandatory installation.

[13rac1]

Ah ha! YES. Bitstream Vera is required to use the provided fontconfig. It is required in my Launchpad PPA.

To keep DejaVu, such in #36, the (only?) solution is to manually subset DejaVu to remove all emoji characters using NotoTools.

Ideal long term solution: DejaVu must be modified to keep all Unicode Emoji out of the default font like the default Windows and OS X font families. Edit: Maybe add a DejaVu Emoji font separately.. IDK

[IgnoredAmbience]

Released 1.0-2 to AUR with ttf-bitstream-vera as a required dependency. Apologies for missing this previously.

[13rac1]

Great! There are many options to create custom fontconfigs or subset fonts, but I want to provide a general "just works" for most users. Advanced users know what to do.

[13rac1]

@TamasBarta Can you confirm if BitstreamVera is installed?

[TamasBarta]

Sorry for being unavailable lately. I have BitstreamVera installed, and DejaVu as well. The packages I have installed (for those familiar with Arch) are ttf-dejavu and ttf-bitstream-vera.
Also I installed the latest version of edgemaster's package from AUR, but that made no difference.

[13rac1]

I've installed Evolution on my machine (Ubuntu 14.04) version: 3.10.4 and have reproduced this issue. Steps to reproduce:

1. Install evolution
2. Start evolution and skip setup wizard
3. Create a new email
4. Type some characters
5. Save the Draft
6. View the Draft in the preview pane.

DejaVu being selected instead of Vera by your fontconfig is a separate issue:

Vera.ttf: "DejaVu Sans" "Roman"                                 |  Vera.ttf: "Bitstream Vera Sans" "Roman"

[13rac1]

Note, this issue is open until I add it to both emoji font readme files. AFAIK there's nothing I can do in the font file or fontconfig to change this. A bug report should be opened against Evolution regarding it.