Bug 151722 - Incorrect TTF names are used in UI and in saved document
Summary: Incorrect TTF names are used in UI and in saved document
Status: RESOLVED FIXED
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: LibreOffice (show other bugs)
Version:
(earliest affected)
7.4.2.3 release
Hardware: All Linux (All)
: medium normal
Assignee: Caolán McNamara
URL:
Whiteboard: target:7.6.0 target:7.5.3
Keywords:
: 107485 (view as bug list)
Depends on:
Blocks: Hebrew RTL-UI
  Show dependency treegraph
 
Reported: 2022-10-23 21:26 UTC by Maxim Iorsh
Modified: 2023-04-02 18:38 UTC (History)
5 users (show)

See Also:
Crash report or crash signature:


Attachments
Miriam font names and properties (283.56 KB, image/png)
2022-10-23 21:26 UTC, Maxim Iorsh
Details
Font list screenshot (100.66 KB, image/png)
2022-10-23 21:26 UTC, Maxim Iorsh
Details
Miriam fonts - regular and bold (20.54 KB, application/zip)
2022-10-23 21:29 UTC, Maxim Iorsh
Details
Properly displayed with an LO 7.5 dev build on Linux (99.03 KB, image/png)
2022-11-04 11:33 UTC, Eyal Rozenberg
Details
Bug present in 7.5.1.2 - English font name not shown (182.68 KB, image/png)
2023-03-24 10:43 UTC, Maxim Iorsh
Details
Bug present in 7.5.1.2 - Hebrew font name is shown, but shouldn't be (171.92 KB, image/png)
2023-03-24 10:44 UTC, Maxim Iorsh
Details

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Description Maxim Iorsh 2022-10-23 21:26:12 UTC
Created attachment 183225 [details]
Miriam font names and properties

Description:
Incorrect font name is used in UI font list and in saved file.The font "Miriam CLM" (attached) has names in both en_US and he_IL locales (see screeenshot miriam_properties.png). The Hebrew name is used in English UI

Steps to Reproduce:
1. Install attached fonts MiriamCLM-Book.ttf and MiriamCLM-Bold.ttf
2. Set UI language to en_US
3. Open Libreoffice Writer
4. Open drop-down list of fonts

Actual Results:
In the list of fonts the Miriam font is listed as "מרים" at the end of the list(see screenshot font_list.png)

Expected Results:
In the list of fonts the Miriam font should be listed as "Miriam" in the appropriate alphabet-based place

Reproducible: Always

Version: 7.4.2.3 / LibreOffice Community
Build ID: 382eef1f22670f7f4118c8c2dd222ec7ad009daf
CPU threads: 4; OS: Linux 5.4; UI render: default; VCL: kf5 (cairo+xcb)
Locale: he-IL (he_IL.UTF-8); UI: en-US
Calc: threaded
Comment 1 Maxim Iorsh 2022-10-23 21:26:47 UTC
Created attachment 183226 [details]
Font list screenshot
Comment 2 Maxim Iorsh 2022-10-23 21:29:18 UTC
Created attachment 183227 [details]
Miriam fonts - regular and bold
Comment 3 Eyal Rozenberg 2022-10-23 22:54:52 UTC
There might be some design rationale to this... let's ask other people.
Comment 4 Heiko Tietze 2022-11-04 10:19:36 UTC
(In reply to Eyal Rozenberg from comment #3)
> There might be some design rationale to this... let's ask other people.

Don't think so. If the font provides an English name it should be shown. The expanded list does it at least for Noto Naskh Arabic and similar showing the Arab name next to it. Same for utkal and Veberteysch in the screenshot.

Wonder what makes those fonts different. How does the font info look like for a working example?
Comment 5 Eyal Rozenberg 2022-11-04 11:33:33 UTC
Created attachment 183407 [details]
Properly displayed with an LO 7.5 dev build on Linux

I have to say I can't reproduce this bug - neither with LO 7.4.12 nor with a recent 7.5 dev build. Attaching what I see in the font family drop-down list.
Comment 6 Maxim Iorsh 2022-11-04 11:43:30 UTC
(In reply to Eyal Rozenberg from comment #5)
> Created attachment 183407 [details]
> Properly displayed with an LO 7.5 dev build on Linux
> 
> I have to say I can't reproduce this bug - neither with LO 7.4.12 nor with a
> recent 7.5 dev build. Attaching what I see in the font family drop-down list.

This is strange. Eyal, could you please paste the entire build info? If you are using 7.4.2.3 appimage, it could be great.
Comment 7 Eyal Rozenberg 2022-11-04 11:57:56 UTC
(In reply to Maxim Iorsh from comment #6)

Version: 7.4.1.2 / LibreOffice Community
Build ID: 40(Build:2)
CPU threads: 4; OS: Linux 5.19; UI render: default; VCL: gtk3
Locale: en-IL (en_IL); UI: en-US
Debian package version: 1:7.4.1-1
Comment 8 ⁨خالد حسني⁩ 2022-12-05 08:59:17 UTC
It seems that displaying localized font names is tied to the locale being used and not the UI language. I find this questionable choice, but IIRC Windows does this as well, so may be there is a good rational for this or may be users of certain locale expect it?

I think this is a FontConfig issue, though:

$ fc-match "Miriam CLM"
MiriamCLM-Book.ttf: "Miriam CLM" "Book"

$ LC_ALL=he_IL LANG=en_US fc-match "Miriam CLM"
MiriamCLM-Book.ttf: "מרים" "קל"

$ LC_ALL=en_US LANG=he_IL fc-match "Miriam CLM"
MiriamCLM-Book.ttf: "Miriam CLM" "Book"

FontConfig seems to be returning the localized name depending on the locale not the language.
Comment 9 Eyal Rozenberg 2022-12-05 09:20:22 UTC
(In reply to خالد حسني from comment #8)
> It seems that displaying localized font names is tied to the locale being
> used and not the UI language. I find this questionable choice, but IIRC
> Windows does this as well,

I don't remember seeing this on Windows. At least - not when I browse fonts, and not when I select fonts in MSO. Can you be more specific?

> so may be there is a good rational for this or
> may be users of certain locale expect it?

I doubt that a user, who has chosen a certain UI language for an app, expects drop-down list items to use the locale language instead. Not to mention the fact that many/most Hebrew and probably Arabic fonts don't even include a translation of the name.
Comment 10 ⁨خالد حسني⁩ 2022-12-05 09:25:03 UTC
(In reply to Eyal Rozenberg from comment #9)
> (In reply to خالد حسني from comment #8)
> > It seems that displaying localized font names is tied to the locale being
> > used and not the UI language. I find this questionable choice, but IIRC
> > Windows does this as well,
> 
> I don't remember seeing this on Windows. At least - not when I browse fonts,
> and not when I select fonts in MSO. Can you be more specific?

That was years ago, so I’ll need to test it again. But I had built a font that had Arabic localized name entries, and it would show the Arabic names even on systems with English UI language.

> > so may be there is a good rational for this or
> > may be users of certain locale expect it?
> 
> I doubt that a user, who has chosen a certain UI language for an app,
> expects drop-down list items to use the locale language instead. Not to
> mention the fact that many/most Hebrew and probably Arabic fonts don't even
> include a translation of the name.

Different user communities have different expectations, for example Chinese names for Chinese fonts seem to be common.
Comment 11 Maxim Iorsh 2022-12-05 10:21:10 UTC
(In reply to خالد حسني from comment #8)
> It seems that displaying localized font names is tied to the locale being
> used and not the UI language. I find this questionable choice, but IIRC
> Windows does this as well, so may be there is a good rational for this or
> may be users of certain locale expect it?
> 
> I think this is a FontConfig issue, though:
> 
> $ fc-match "Miriam CLM"
> MiriamCLM-Book.ttf: "Miriam CLM" "Book"
> 
> $ LC_ALL=he_IL LANG=en_US fc-match "Miriam CLM"
> MiriamCLM-Book.ttf: "מרים" "קל"
> 
> $ LC_ALL=en_US LANG=he_IL fc-match "Miriam CLM"
> MiriamCLM-Book.ttf: "Miriam CLM" "Book"
> 
> FontConfig seems to be returning the localized name depending on the locale
> not the language.

The behavior of fontconfig is correct, because LC_ALL overrides LANG. The issue seems to be that UI language is not necessarily reflected in any environment variable, Libreoffice even allows to set it explicitly in settings.

Maybe the correct solution is to call fontconfig with custom environment which depends on use case. I'd suggest the following:

For UI: Set LC_ALL=<UI locale>; call fontconfig
For file save: Set LC_ALL=C; call fontconfig

In this way each user will see font name tailored to their UI, but the font name used inside file read/write will be stable across all systems.
Comment 12 ⁨خالد حسني⁩ 2022-12-05 19:16:14 UTC
(In reply to Maxim Iorsh from comment #11)
> (In reply to خالد حسني from comment #8)
> > It seems that displaying localized font names is tied to the locale being
> > used and not the UI language. I find this questionable choice, but IIRC
> > Windows does this as well, so may be there is a good rational for this or
> > may be users of certain locale expect it?
> > 
> > I think this is a FontConfig issue, though:
> > 
> > $ fc-match "Miriam CLM"
> > MiriamCLM-Book.ttf: "Miriam CLM" "Book"
> > 
> > $ LC_ALL=he_IL LANG=en_US fc-match "Miriam CLM"
> > MiriamCLM-Book.ttf: "מרים" "קל"
> > 
> > $ LC_ALL=en_US LANG=he_IL fc-match "Miriam CLM"
> > MiriamCLM-Book.ttf: "Miriam CLM" "Book"
> > 
> > FontConfig seems to be returning the localized name depending on the locale
> > not the language.
> 
> The behavior of fontconfig is correct, because LC_ALL overrides LANG. The
> issue seems to be that UI language is not necessarily reflected in any
> environment variable, Libreoffice even allows to set it explicitly in
> settings.
> 
> Maybe the correct solution is to call fontconfig with custom environment
> which depends on use case. I'd suggest the following:
> 
> For UI: Set LC_ALL=<UI locale>; call fontconfig
> For file save: Set LC_ALL=C; call fontconfig
> 
> In this way each user will see font name tailored to their UI, but the font
> name used inside file read/write will be stable across all systems.

Sorry, that was red-herring indeed.

The issue is in LibreOffice code, in particular this code that uses process locale instead of the UI language:

https://git.libreoffice.org/core/+/refs/heads/master/vcl/unx/generic/fontmanager/fontconfig.cxx#445

The best person to comment about this code is Caolán McNamara, but this code have been like this since ~forever.
Comment 13 Maxim Iorsh 2022-12-05 21:58:17 UTC
@Caolán, could you please review this issue and express your opinion?
Comment 14 Caolán McNamara 2022-12-06 08:59:11 UTC
my comment there was "possible to-do, sort by UILocale instead of process locale" so we can simply do that instead
Comment 15 ⁨خالد حسني⁩ 2022-12-06 15:01:07 UTC
*** Bug 107485 has been marked as a duplicate of this bug. ***
Comment 16 Caolán McNamara 2022-12-06 15:07:04 UTC
bot didn't work for some reason, so:

https://git.libreoffice.org/core/commit/645f8038df617275e65e05bba0b165a1c52ce59b

Resolves: tdf#151722 use UI Language for localized font names

It will be available in 7.5.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.

backport to 7-4 is in gerrit
Comment 17 Commit Notification 2022-12-07 04:22:33 UTC
Caolán McNamara committed a patch related to this issue.
It has been pushed to "libreoffice-7-4":

https://git.libreoffice.org/core/commit/ef557f0742b6111827982f5e10bc2f44fb553f78

Resolves: tdf#151722 use UI Language for localized font names

It will be available in 7.4.4.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.
Comment 18 Maxim Iorsh 2023-03-24 10:43:06 UTC
Created attachment 186179 [details]
Bug present in 7.5.1.2 - English font name not shown
Comment 19 Maxim Iorsh 2023-03-24 10:44:34 UTC
Created attachment 186180 [details]
Bug present in 7.5.1.2 - Hebrew font name is shown, but shouldn't be

I can still reproduce the issue - see screenshots

Version: 7.5.1.2 (X86_64) / LibreOffice Community
Build ID: fcbaee479e84c6cd81291587d2ee68cba099e129
CPU threads: 4; OS: Linux 5.4; UI render: default; VCL: kf5 (cairo+xcb)
Locale: he-IL (he_IL.UTF-8); UI: en-US
Calc: threaded
Comment 20 Caolán McNamara 2023-03-24 12:31:25 UTC
looks like the use of the localized name got disabled back with https://bz.apache.org/ooo/show_bug.cgi?id=111108 as

commit cc93f06f93eeaaee5811588d90929ebc72bf9724
Date:   Fri Apr 23 12:28:26 2010 +0200

    #i111108# do not prefer fontconfig familyname because of i79878
Comment 21 Maxim Iorsh 2023-03-24 13:12:46 UTC
Was it reverted intentionally or by coincidence? I don't see contradiction between using classic family name (as per 111108) and retrieving it from fontconfig with the correct locale.
Comment 22 Maxim Iorsh 2023-03-24 13:31:18 UTC
Checked the "Miriam CLM" font in question, it uses the classic family nameid 1, not 16
Comment 23 Caolán McNamara 2023-03-24 13:59:10 UTC
Looks like that was done not to disable translated names, but to disable "newer" names. Without the name set from what fontconfig reports then we read it ourself, so it seems that code is the one that needs adjustment rather than the fontconfig one.

Attempt #2 with https://gerrit.libreoffice.org/c/core/+/149542
Comment 24 Commit Notification 2023-03-24 20:42:15 UTC
Caolán McNamara committed a patch related to this issue.
It has been pushed to "master":

https://git.libreoffice.org/core/commit/45da2754222d1fd6ffb02636b8568b4ac6472979

tdf#151722 restore use of localized font name

It will be available in 7.6.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.
Comment 25 Caolán McNamara 2023-03-24 20:43:59 UTC
looks good to me in trunk, but I thought that before, backport to 7-5 in gerrit
Comment 26 Eyal Rozenberg 2023-03-24 21:21:02 UTC
(In reply to Caolán McNamara from comment #25)

Thanks, Caolan, for the quick fix.

... if only the font-family-names-from-PDFs issue could be fixed this smoothly :-P (bug 143095)
Comment 27 Commit Notification 2023-03-25 09:10:18 UTC
Caolán McNamara committed a patch related to this issue.
It has been pushed to "libreoffice-7-5":

https://git.libreoffice.org/core/commit/521ba951d3b983b58f7772fe62d19b07efa19881

tdf#151722 restore use of localized font name

It will be available in 7.5.3.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.