Tdesktop: Code block font issue

[glebsam]

Steps to reproduce

1. Write a message, use "```" for code block
2. Check how it looks
   

   Expected behavior

Code showed correctly

Actual behavior

Code replaced with squares (see screenshots below)

Configuration

Operating system:
Ubuntu 16.10 (On Ubuntu 16.04 this function worked fine)

Version of Telegram Desktop:
0.10.19

Logs

log_14_30.txt
mtp_14_30.txt
tcp_14_30.txt

Telegram Desktop

Telegram on Android

[dayfuaim]

Same problem.
TDesktop 0.10.19 @Ubuntu 16.10.

[glebsam]

Maybe there is any workaround? I really believe, if one Linux OS (e.g. Fedora 23-25) has no such issue, another one can get a simple fix. Finally, it's Linux!

[confususs]

Same problem.
TDesktop 0.10.19 Archlinux

[glebsam]

Upgrade 0.10.20 - the issue is still present.
Upgrade 1.0 - the issue is still present.

[glebsam]

Finally, there is a workaround.
In my home directory, I found a directory named .TelegramDesktop. And in this directory, another one, named fontconfig. It is what you need to remove, and then restart Telegram Desktop.

cd ~/.TelegramDesktop
rm -rf fontconfig

[fishhead108]

@glebsam unfortunately, it doesn't works for me:

• Arch Linux 4.9.8-1-ARCH
• i3WM
• Telegram 1.0.5
• fontconfig 2.12.1-4

[dayfuaim]

@glebsam For me too:

• Ubuntu 16.10
• Unity
• Telegram 1.0.5
• fontconfig 2.11.94-0ubuntu2

And this fontconfig folder reappears on Telegram restart.

[GabMus]

Same problem here

• Arch Linux 4.9.9-1-ARCH
• GNOME-Shell
• Telegram 1.0.14
• fontconfig 2.12.1-4

Here's a screenshot:

If I open it up on the terminal here's the output

$ ./Apps/Telegram/Telegram
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number

I have the same setup (os, packages versions etc) on my desktop PC and this problem doesn't seem to happen there.
Please investigate this ASAP as it breaks the user experience.

[GabMus]

Ok, small update, seems that the Fontconfig errors I have posted previously also happen on installations where the code blocks are shown correctly, so it should be unrelated

[glebsam]

@fishhead108 , @dayfuaim , @GabMus Looks like this issue is not observed on clean installations of recent TD. If so, I guess this instruction will help:

1. Kill Telegram Desktop
2. Remove the whole ~/.TelegramDesktop directory and the directory, from which TD was run.
3. Perform clean install from https://desktop.telegram.org/

[GabMus]

that's what I did

rm -r .TelegramDesktop
rm: cannot remove '.TelegramDesktop': No such file or directory
# found out TelegramDesktop is in .local/share
rm -r .local/share/TelegramDesktop
rm -r Apps/Telegram/

I proceeded to download a Telegram Desktop again, I logged in, and still the problem is there.

This method doesn't work for me.

EDIT: also tried linking .local/share/TelegramDesktop to ~/.TelegramDesktop and nothing changes.
EDIT 2 (sorry): also tried moving .local/share/TelegramDesktop to ~/.TelegramDesktop

[ilsawa]

/opt/Telegram/Telegram 
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
Fontconfig warning: "/etc/fonts/conf.d/70-fonts-bpg-georgian.conf", line 12: bad alias
Fontconfig warning: "/etc/fonts/conf.d/70-fonts-bpg-georgian.conf", line 21: bad alias
Fontconfig warning: "/etc/fonts/conf.d/70-fonts-bpg-georgian.conf", line 30: bad alias
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 70: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 78: saw unknown, expected number
Fontconfig warning: "/etc/fonts/conf.d/70-fonts-bpg-georgian.conf", line 12: bad alias
Fontconfig warning: "/etc/fonts/conf.d/70-fonts-bpg-georgian.conf", line 21: bad alias
Fontconfig warning: "/etc/fonts/conf.d/70-fonts-bpg-georgian.conf", line 30: bad alias

Hmm, this error occurs if you are using older versions of fontconfig library. Perhaps they are statically linked into the binary file.

[dikiaap]

I had a same problem like you all and all methods from above is doesn't work.

[dikiaap]

Now, mine is works. But the code snippets becomes italic.
What fonts used in telegram? Maybe I can install related fonts.

[kelytha]

I started having this issue recently on my Linux machine. Removing .local/share/TelegramDesktop/fontconfig didn't solve the issue.

The really weird thing is that it used to work, then the issue just appeared out of nowhere.

[kelytha]

Installing ttf-liberation solved the issue.

Apparently it's the fallback font selection here that fails for some weird reason:
https://github.com/telegramdesktop/tdesktop/blob/a69304fd2547961f684f249a7ea590bbf604f736/Telegram/SourceFiles/app.cpp#L2284

[confususs]

Thank you for that solution @kelytha! I regularly share code in Telegram and this has made my life so much better.

[shirishag75]

At least in debian ttf-liberation is a transitional dummy package and fonts-liberation is the real package.

[$] aptitude search liberation                                                                                                    
i   fonts-liberation                                                - Fonts with the same metrics as Times, Arial and Courier                   
v   fonts-liberation:i386                                           -                                                                           
i   fonts-liberation2                                               - Fonts with the same metrics as Times, Arial and Courier (v2)              
i   ttf-liberation                                                  - transitional dummy package                                                
v   ttf-liberation:i386                                             -                  

But running telegram from console doesn't improve things at all -

[$] ./Telegram                                                                                                                      
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig error: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 72: non-double matrix element
Fontconfig warning: "/etc/fonts/conf.d/10-scale-bitmap-fonts.conf", line 80: saw unknown, expected number

So the issue still persists. FWIW, I'm running Debian testing i.e. buster.

[anotherbugmaster]

Same issue here. Installing ttf-liberation helped, but warnings are still persist.

[Aokromes]

Test after https://github.com/telegramdesktop/tdesktop/commit/8ee958bfa08b2ba87cffaf8de4b65b6890e59ea3