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Improve fontconfig integration #761

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igormironchik opened this issue May 16, 2024 · 14 comments
Open

Improve fontconfig integration #761

igormironchik opened this issue May 16, 2024 · 14 comments

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@igormironchik
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The following SVG files render wrong with resvg.

paragraph_before
paragraph_after

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
   width="405"
   height="105"
   viewBox="0 0 107.15625 27.781251"
   version="1.1"
   id="svg5"
   inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
   sodipodi:docname="paragraph_before.svg"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:xlink="http://www.w3.org/1999/xlink"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:svg="http://www.w3.org/2000/svg">
  <sodipodi:namedview
     id="namedview7"
     pagecolor="#ffffff"
     bordercolor="#666666"
     borderopacity="1.0"
     inkscape:pageshadow="2"
     inkscape:pageopacity="1"
     inkscape:pagecheckerboard="0"
     inkscape:document-units="mm"
     showgrid="true"
     inkscape:snap-grids="true"
     units="px"
     width="200px"
     inkscape:zoom="1.3011622"
     inkscape:cx="156.78291"
     inkscape:cy="-19.982136"
     inkscape:window-width="1920"
     inkscape:window-height="1008"
     inkscape:window-x="0"
     inkscape:window-y="0"
     inkscape:window-maximized="1"
     inkscape:current-layer="layer1">
    <inkscape:grid
       type="xygrid"
       id="grid4028"
       empspacing="5"
       snapvisiblegridlinesonly="true"
       spacingx="0.66145834"
       spacingy="0.66145834" />
  </sodipodi:namedview>
  <defs
     id="defs2">
    <marker
       style="overflow:visible"
       id="Arrow2Lend"
       refX="0"
       refY="0"
       orient="auto"
       inkscape:stockid="Arrow2Lend"
       inkscape:isstock="true">
      <path
         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
         style="fill:context-stroke;fill-rule:evenodd;stroke:context-stroke;stroke-width:0.625;stroke-linejoin:round"
         id="path17119" />
    </marker>
    <linearGradient
       inkscape:collect="always"
       id="linearGradient16676">
      <stop
         style="stop-color:#000000;stop-opacity:1;"
         offset="0"
         id="stop16672" />
      <stop
         style="stop-color:#000000;stop-opacity:0;"
         offset="1"
         id="stop16674" />
    </linearGradient>
    <linearGradient
       inkscape:collect="always"
       id="linearGradient16650">
      <stop
         style="stop-color:#000000;stop-opacity:1;"
         offset="0"
         id="stop16646" />
      <stop
         style="stop-color:#000000;stop-opacity:0;"
         offset="1"
         id="stop16648" />
    </linearGradient>
    <linearGradient
       inkscape:collect="always"
       xlink:href="#linearGradient16650"
       id="linearGradient16652"
       x1="1.2236148"
       y1="2.7078443"
       x2="22.768566"
       y2="2.7078443"
       gradientUnits="userSpaceOnUse" />
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       inkscape:collect="always"
       xlink:href="#linearGradient16676"
       id="linearGradient16678"
       x1="1.3559062"
       y1="2.7078443"
       x2="22.636276"
       y2="2.7078443"
       gradientUnits="userSpaceOnUse" />
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  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1">
    <rect
       style="fill:#ffffff;stroke:#fe0000;stroke-width:0.269063;stroke-opacity:0.00113472"
       id="rect1105"
       width="107.15625"
       height="27.78125"
       x="0"
       y="0" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583;stroke-opacity:1"
       x="2.3812506"
       y="5.9381247"
       id="text15802"><tspan
         sodipodi:role="line"
         id="tspan15800"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583;stroke-opacity:1"
         x="2.3812506"
         y="5.9381247">Raw text data</tspan></text>
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.264583;stroke-opacity:1"
       id="rect16720"
       width="23.8125"
       height="6.614583"
       x="1.3229166"
       y="1.3229166" />
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 25.135417,4.6302083 h 4.630208"
       id="path16992"
       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.221366;stroke-opacity:1"
       id="rect17016"
       width="13.890625"
       height="6.614583"
       x="30.294792"
       y="1.3229166" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="31.040798"
       y="5.7199101"
       id="text20624"><tspan
         sodipodi:role="line"
         id="tspan20622"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="31.040798"
         y="5.7199101">te@Xt1</tspan></text>
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 44.185421,4.6302083 h 4.630208"
       id="path22134"
       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.189566;stroke-opacity:1"
       id="rect22136"
       width="10.18644"
       height="6.614583"
       x="49.34481"
       y="1.3229166" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="50.619984"
       y="5.7199101"
       id="text22140"><tspan
         sodipodi:role="line"
         id="tspan22138"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="50.619984"
         y="5.7199101">text2</tspan></text>
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 59.531261,4.6302083 h 4.630208"
       id="path23198"
       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.189566;stroke-opacity:1"
       id="rect23200"
       width="10.18644"
       height="6.614583"
       x="64.690659"
       y="1.3229166" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="65.965828"
       y="5.7199101"
       id="text23204"><tspan
         sodipodi:role="line"
         id="tspan23202"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="65.965828"
         y="5.7199101">text3</tspan></text>
    <text
       xml:space="preserve"
       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583;stroke-opacity:1"
       x="2.3812506"
       y="24.458963"
       id="text31386"><tspan
         sodipodi:role="line"
         id="tspan31384"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583;stroke-opacity:1"
         x="2.3812506"
         y="24.458963">Paragraph</tspan></text>
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.264583;stroke-opacity:1"
       id="rect31388"
       width="23.8125"
       height="6.614583"
       x="1.3229166"
       y="19.843748" />
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 25.135417,23.151048 h 4.630208"
       id="path31390"
       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.221366;stroke-opacity:1"
       id="rect31392"
       width="13.890625"
       height="6.614583"
       x="30.294792"
       y="19.843748" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="31.040798"
       y="24.240749"
       id="text31396"><tspan
         sodipodi:role="line"
         id="tspan31394"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="31.040798"
         y="24.240749">te@Xt1</tspan></text>
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 44.185421,23.151048 h 4.630208"
       id="path31398"
       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.189566;stroke-opacity:1"
       id="rect31400"
       width="10.18644"
       height="6.614583"
       x="49.34481"
       y="19.843748" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="50.619984"
       y="24.240749"
       id="text31404"><tspan
         sodipodi:role="line"
         id="tspan31402"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="50.619984"
         y="24.240749">code</tspan></text>
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 59.531261,23.151048 h 4.630208"
       id="path31406"
       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.189566;stroke-opacity:1"
       id="rect31408"
       width="10.18644"
       height="6.614583"
       x="64.690659"
       y="19.843748" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="65.965828"
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       id="text31412"><tspan
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         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="65.965828"
         y="24.240749">text2</tspan></text>
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 74.877104,23.151048 h 4.630208"
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       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
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       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.189566;stroke-opacity:1"
       id="rect44166"
       width="10.18644"
       height="6.614583"
       x="80.036507"
       y="19.843748" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="82.37001"
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       id="text44170"><tspan
         sodipodi:role="line"
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         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="82.37001"
         y="24.240749">link</tspan></text>
    <path
       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
       d="m 90.222939,23.151048 h 4.630208"
       id="path48804"
       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
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       style="fill:none;fill-opacity:1;stroke:#000000;stroke-width:0.189566;stroke-opacity:1"
       id="rect48806"
       width="10.18644"
       height="6.614583"
       x="95.382355"
       y="19.843748" />
    <text
       xml:space="preserve"
       style="font-style:normal;font-weight:normal;font-size:10.5833px;line-height:1.25;font-family:sans-serif;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583"
       x="96.657524"
       y="24.240749"
       id="text48810"><tspan
         sodipodi:role="line"
         id="tspan48808"
         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:3.52778px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal;stroke-width:0.264583"
         x="96.657524"
         y="24.240749">text3</tspan></text>
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       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
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       inkscape:connector-type="polyline"
       inkscape:connector-curvature="0" />
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</svg>
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
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   height="105"
   viewBox="0 0 140.22916 27.781251"
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   inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
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With resvg they render like:

Screenshot_20240516_143008
@LaurenzV
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Can't reproduce, I just tried rendering both with resvg and this is what I get:

test

test

@igormironchik
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And how it's possible? Did you try C-API in viewsvg tool?

@igormironchik
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What command did you use to generate PNG?

@igormironchik
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Hm, I tried:

./resvg paragraph_after.svg 1.png
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.
Warning (in usvg::text::layout:1229): No match for 'sans-serif' font-family.

Maybe this issue is because of missing font?

@igormironchik
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Hey, I caught it! On Windows everything is fine! This issue is on Linux only! Check on Linux please.

@RazrFalcon
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RazrFalcon commented May 16, 2024 •
edited
Loading

What does fc-match sans-serif returns on your Linux machine?
Also try running ./resvg paragraph_after.svg 1.png --list-fonts

@igormironchik
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fc-match sans-serif
Arimo-Regular.ttf: "Arimo" "Regular"

./resvg paragraph_after.svg 1.png --list-fonts prints:

fonts.txt

@igormironchik
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And ./resvg paragraph_after.svg 1.png produces PNG without text at all.

@RazrFalcon
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Try calling ./resvg --list-fonts using the latest commit and paste the first 5 lines here. It should look something like:

serif: Times New Roman
sans-serif: Arial
cursive: Comic Sans MS
fantasy: Impact
monospace: Courier New

@igormironchik
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I've got:

serif: Times New Roman
sans-serif: Arial
cursive: Comic Sans MS
fantasy: Impact
monospace: Courier New

@RazrFalcon
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Ok, so your SVG file requests sans-serif, which fontconfig resolves as Arial, but there is no Arial font on your machine.

Can you try calling fc-match --format=%{file} sans-serif or fc-match --format=%{file} Arial?

Sure, resvg could try fallbacking to a random font, but it doesn't do this now.

@RazrFalcon
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Even worse, I guess resvg fails to read fontconfig to begin with. fc-match reports Arimo as sans-serif, no Arial.

I guess your fontconfig config is so complicated that the library we use to parse it fails. No sure if it can be fixed... Try using explicit font names for now.

@RazrFalcon
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I guess this issue is basically this: RazrFalcon/fontdb#24

@igormironchik
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fc-match --format=%{file} sans-serif

fc-match --format=%{file} sans-serif
/usr/share/fonts/truetype/croscore/Arimo-Regular.ttf

fc-match --format=%{file} Arial

fc-match --format=%{file} Arial
/usr/share/fonts/truetype/croscore/Arimo-Regular.ttf

No sure if it can be fixed... Try using explicit font names for now.

Sure, I will workaround this.

I guess this issue is basically this: RazrFalcon/fontdb#24

Don't know. You know better. I said - you know :)

@RazrFalcon RazrFalcon changed the title Wrong rendering Improve fontconfig integration May 16, 2024
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@RazrFalcon @igormironchik @LaurenzV