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Fontconfig error/warning when launching on Linux with Electron 4.x #386

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jacobq opened this issue Apr 8, 2019 · 2 comments
Closed

Fontconfig error/warning when launching on Linux with Electron 4.x #386

jacobq opened this issue Apr 8, 2019 · 2 comments

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@jacobq
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jacobq commented Apr 8, 2019

These seems to be some upstream problems with electron/chrome/chromium on Linux systems with some versions of fontconfig. I see it when I try to launch electron >= 4 or the latest google-chrome-stable.

Information about my system 
$ ember -v
WARNING: Node v11.13.0 is not tested against Ember CLI on your platform. We recommend that you use the most-recent "Active LTS" version of Node.js. See https://git.io/v7S5n for details.
ember-cli: 3.8.2
node: 11.13.0
os: linux x64

$ uname -a
Linux fractal 4.9.0-8-amd64 #1 SMP Debian 4.9.144-3 (2019-02-02) x86_64 GNU/Linux

$ dpkg -l google-chrome* fontconfig
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                              Version               Architecture          Description
+++-=================================-=====================-=====================-========================================================================
ii  fontconfig                        2.11.0-6.7+b1         amd64                 generic font configuration library - support binaries
ii  google-chrome-stable              73.0.3683.103-1       amd64                 The web browser from Google
Contents of fonts.conf

Line 100 is the one with <blank>

$ cat /etc/fonts/fonts.conf 
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<!-- /etc/fonts/fonts.conf file to configure system font access -->
<fontconfig>

<!--
	DO NOT EDIT THIS FILE.
	IT WILL BE REPLACED WHEN FONTCONFIG IS UPDATED.
	LOCAL CHANGES BELONG IN 'local.conf'.

	The intent of this standard configuration file is to be adequate for
	most environments.  If you have a reasonably normal environment and
	have found problems with this configuration, they are probably
	things that others will also want fixed.  Please submit any
	problems to the fontconfig bugzilla system located at fontconfig.org

	Note that the normal 'make install' procedure for fontconfig is to
	replace any existing fonts.conf file with the new version.  Place
	any local customizations in local.conf which this file references.

	Keith Packard
-->

<!-- Font directory list -->

	<dir>/usr/share/fonts</dir>
	<dir>/usr/X11R6/lib/X11/fonts</dir> <dir>/usr/local/share/fonts</dir>
	<dir prefix="xdg">fonts</dir>
	<!-- the following element will be removed in the future -->
	<dir>~/.fonts</dir>

<!--
  Accept deprecated 'mono' alias, replacing it with 'monospace'
-->
	<match target="pattern">
		<test qual="any" name="family">
			<string>mono</string>
		</test>
		<edit name="family" mode="assign" binding="same">
			<string>monospace</string>
		</edit>
	</match>

<!--
  Accept alternate 'sans serif' spelling, replacing it with 'sans-serif'
-->
	<match target="pattern">
		<test qual="any" name="family">
			<string>sans serif</string>
		</test>
		<edit name="family" mode="assign" binding="same">
			<string>sans-serif</string>
		</edit>
	</match>

<!--
  Accept deprecated 'sans' alias, replacing it with 'sans-serif'
-->
	<match target="pattern">
		<test qual="any" name="family">
			<string>sans</string>
		</test>
		<edit name="family" mode="assign" binding="same">
			<string>sans-serif</string>
		</edit>
	</match>

<!--
  Ignore dpkg temporary files created in fonts directories
-->
	<selectfont>
		<rejectfont>
			<glob>*.dpkg-tmp</glob>
		</rejectfont>
	</selectfont>
	<selectfont>
		<rejectfont>
			<glob>*.dpkg-new</glob>
		</rejectfont>
	</selectfont>

<!--
  Load local system customization file
-->
	<include ignore_missing="yes">conf.d</include>

<!-- Font cache directory list -->

	<cachedir>/var/cache/fontconfig</cachedir>
	<cachedir prefix="xdg">fontconfig</cachedir>
	<!-- the following element will be removed in the future -->
	<cachedir>~/.fontconfig</cachedir>

	<config>
<!--
  These are the default Unicode chars that are expected to be blank
  in fonts.  All other blank chars are assumed to be broken and
  won't appear in the resulting charsets
 -->
		<blank>
			<int>0x0020</int>	<!-- SPACE -->
			<int>0x00A0</int>	<!-- NO-BREAK SPACE -->
			<int>0x00AD</int>	<!-- SOFT HYPHEN -->
			<int>0x034F</int>	<!-- COMBINING GRAPHEME JOINER -->
			<int>0x0600</int>	<!-- ARABIC NUMBER SIGN -->
			<int>0x0601</int>	<!-- ARABIC SIGN SANAH -->
			<int>0x0602</int>	<!-- ARABIC FOOTNOTE MARKER -->
			<int>0x0603</int>	<!-- ARABIC SIGN SAFHA -->
			<int>0x06DD</int>	<!-- ARABIC END OF AYAH -->
			<int>0x070F</int>	<!-- SYRIAC ABBREVIATION MARK -->
			<int>0x115F</int>	<!-- HANGUL CHOSEONG FILLER -->
			<int>0x1160</int>	<!-- HANGUL JUNGSEONG FILLER -->
			<int>0x1680</int>	<!-- OGHAM SPACE MARK -->
			<int>0x17B4</int>	<!-- KHMER VOWEL INHERENT AQ -->
			<int>0x17B5</int>	<!-- KHMER VOWEL INHERENT AA -->
			<int>0x180E</int>	<!-- MONGOLIAN VOWEL SEPARATOR -->
			<int>0x2000</int>	<!-- EN QUAD -->
			<int>0x2001</int>	<!-- EM QUAD -->
			<int>0x2002</int>	<!-- EN SPACE -->
			<int>0x2003</int>	<!-- EM SPACE -->
			<int>0x2004</int>	<!-- THREE-PER-EM SPACE -->
			<int>0x2005</int>	<!-- FOUR-PER-EM SPACE -->
			<int>0x2006</int>	<!-- SIX-PER-EM SPACE -->
			<int>0x2007</int>	<!-- FIGURE SPACE -->
			<int>0x2008</int>	<!-- PUNCTUATION SPACE -->
			<int>0x2009</int>	<!-- THIN SPACE -->
			<int>0x200A</int>	<!-- HAIR SPACE -->
			<int>0x200B</int>	<!-- ZERO WIDTH SPACE -->
			<int>0x200C</int>	<!-- ZERO WIDTH NON-JOINER -->
			<int>0x200D</int>	<!-- ZERO WIDTH JOINER -->
			<int>0x200E</int>	<!-- LEFT-TO-RIGHT MARK -->
			<int>0x200F</int>	<!-- RIGHT-TO-LEFT MARK -->
			<int>0x2028</int>	<!-- LINE SEPARATOR -->
			<int>0x2029</int>	<!-- PARAGRAPH SEPARATOR -->
			<int>0x202A</int>	<!-- LEFT-TO-RIGHT EMBEDDING -->
			<int>0x202B</int>	<!-- RIGHT-TO-LEFT EMBEDDING -->
			<int>0x202C</int>	<!-- POP DIRECTIONAL FORMATTING -->
			<int>0x202D</int>	<!-- LEFT-TO-RIGHT OVERRIDE -->
			<int>0x202E</int>	<!-- RIGHT-TO-LEFT OVERRIDE -->
			<int>0x202F</int>	<!-- NARROW NO-BREAK SPACE -->
			<int>0x205F</int>	<!-- MEDIUM MATHEMATICAL SPACE -->
			<int>0x2060</int>	<!-- WORD JOINER -->
			<int>0x2061</int>	<!-- FUNCTION APPLICATION -->
			<int>0x2062</int>	<!-- INVISIBLE TIMES -->
			<int>0x2063</int>	<!-- INVISIBLE SEPARATOR -->
			<int>0x206A</int>	<!-- INHIBIT SYMMETRIC SWAPPING -->
			<int>0x206B</int>	<!-- ACTIVATE SYMMETRIC SWAPPING -->
			<int>0x206C</int>	<!-- INHIBIT ARABIC FORM SHAPING -->
			<int>0x206D</int>	<!-- ACTIVATE ARABIC FORM SHAPING -->
			<int>0x206E</int>	<!-- NATIONAL DIGIT SHAPES -->
			<int>0x206F</int>	<!-- NOMINAL DIGIT SHAPES -->
			<int>0x2800</int>	<!-- BRAILLE PATTERN BLANK -->
			<int>0x3000</int>	<!-- IDEOGRAPHIC SPACE -->
			<int>0x3164</int>	<!-- HANGUL FILLER -->
			<int>0xFEFF</int>	<!-- ZERO WIDTH NO-BREAK SPACE -->
			<int>0xFFA0</int>	<!-- HALFWIDTH HANGUL FILLER -->
			<int>0xFFF9</int>	<!-- INTERLINEAR ANNOTATION ANCHOR -->
			<int>0xFFFA</int>	<!-- INTERLINEAR ANNOTATION SEPARATOR -->
			<int>0xFFFB</int>	<!-- INTERLINEAR ANNOTATION TERMINATOR -->
		</blank>
<!--
  Rescan configuration every 30 seconds when FcFontSetList is called
 -->
		<rescan>
			<int>30</int>
		</rescan>
	</config>

</fontconfig>

I don't think it's "our fault", but as it is something that can show up following the default "hello world" of ember new .... ; ember install ember-electron; ember electron I wanted to ask here in case anyone can provide more information about it.

v3.0.13

...
Build successful (1292ms)



Slowest Nodes (totalTime => 5% )              | Total (avg)         
----------------------------------------------+---------------------
Rollup (1)                                    | 477ms               
Package /assets/vendor.js (1)                 | 294ms               
Babel: ember-ajax (1)                         | 168ms               
broccoli-persistent-filter:EslintValid... (2) | 108ms (54 ms)       

Starting Electron...
(electron) The 'lstatSyncNoException' function has been deprecated and marked for removal.
(electron) The 'lstatSyncNoException' function has been deprecated and marked for removal.
(electron) The 'lstatSyncNoException' function has been deprecated and marked for removal.

navigator.userAgent
"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) junk-app/0.0.0 Chrome/66.0.3359.181 Electron/3.0.13 Safari/537.36"

v4.0.0

...
Build successful (1237ms)



Slowest Nodes (totalTime => 5% )              | Total (avg)         
----------------------------------------------+---------------------
Rollup (1)                                    | 413ms               
Package /assets/vendor.js (1)                 | 292ms               
Babel: ember-ajax (1)                         | 160ms               
broccoli-persistent-filter:EslintValid... (2) | 111ms (55 ms)       

Starting Electron...
Fontconfig warning: "/etc/fonts/fonts.conf", line 100: unknown element "blank"

navigator.userAgent
"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) junk-app/0.0.0 Chrome/69.0.3497.106 Electron/4.0.0 Safari/537.36"

v4.1.4 (following these steps) produces similar results.
@jacobq
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jacobq commented Apr 8, 2019 •
edited
Loading

Some report that removing the <blank>...</blank> section prevents the message from appearing.

Update: I tried this on my system and can confirm that it does (though I am not sure if this is advisable -- distribution maintainers should probably update it instead).

@jacobq jacobq closed this as completed Apr 8, 2019
@jacobq
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jacobq commented Apr 8, 2019

See also https://unix.stackexchange.com/questions/504335/fontconfig-warning-etc-fonts-fonts-conf-line-100-unknown-element-blank/511335#511335

@fkm fkm mentioned this issue May 31, 2019
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