From 31af73642d42865714820a3bab8e44e23d93fb37 Mon Sep 17 00:00:00 2001
From: Theodoros Orfanidis <teoulas@gmail.com>
Date: Thu, 6 Aug 2026 11:56:41 +0200
Subject: [PATCH] Fix variable font weight metadata on Linux

---
 .../MonaSansVF-Condensed[opsz,wght,ital].ttf  | Bin 535968 -> 535968 bytes
 .../MonaSansVF-Expanded[opsz,wght,ital].ttf   | Bin 534772 -> 534772 bytes
 .../variable/MonaSansVF-Italic[opsz,wght].ttf | Bin 325636 -> 325636 bytes
 .../MonaSansVF-Italic[wdth,opsz,wght].ttf     | Bin 749368 -> 749368 bytes
 fonts/variable/MonaSansVF[opsz,wght].ttf      | Bin 347676 -> 347676 bytes
 fonts/variable/MonaSansVF[wdth,opsz,wght].ttf | Bin 774188 -> 774188 bytes
 .../MonaSansVF[wdth,wght,opsz,ital].ttf       | Bin 1372268 -> 1372268 bytes
 sources/MonaSans.glyphspackage/fontinfo.plist |  10 ++++++++++
 sources/README.md                             |   2 ++
 9 files changed, 12 insertions(+)

diff --git a/fonts/variable/MonaSansVF-Condensed[opsz,wght,ital].ttf b/fonts/variable/MonaSansVF-Condensed[opsz,wght,ital].ttf
index 46bcc4147d3145134469ad9de3424f7f4e55dce2..a6fa71adbca0cd42bf1bd065d7e9d3e8e5d94f40 100644
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diff --git a/fonts/variable/MonaSansVF-Expanded[opsz,wght,ital].ttf b/fonts/variable/MonaSansVF-Expanded[opsz,wght,ital].ttf
index abcbc41a98e6f0c82a3395fc8c8d567b47f39b9d..5499f8b76442b4b766bb4c86c61250bfd65b107e 100644
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diff --git a/fonts/variable/MonaSansVF-Italic[opsz,wght].ttf b/fonts/variable/MonaSansVF-Italic[opsz,wght].ttf
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GIT binary patch
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diff --git a/fonts/variable/MonaSansVF-Italic[wdth,opsz,wght].ttf b/fonts/variable/MonaSansVF-Italic[wdth,opsz,wght].ttf
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diff --git a/fonts/variable/MonaSansVF[opsz,wght].ttf b/fonts/variable/MonaSansVF[opsz,wght].ttf
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diff --git a/fonts/variable/MonaSansVF[wdth,opsz,wght].ttf b/fonts/variable/MonaSansVF[wdth,opsz,wght].ttf
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diff --git a/fonts/variable/MonaSansVF[wdth,wght,opsz,ital].ttf b/fonts/variable/MonaSansVF[wdth,wght,opsz,ital].ttf
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diff --git a/sources/MonaSans.glyphspackage/fontinfo.plist b/sources/MonaSans.glyphspackage/fontinfo.plist
index 184a137e..82247f98 100644
--- a/sources/MonaSans.glyphspackage/fontinfo.plist
+++ b/sources/MonaSans.glyphspackage/fontinfo.plist
@@ -6122,6 +6122,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6181,6 +6182,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6236,6 +6238,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6303,6 +6306,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6366,6 +6370,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6429,6 +6434,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6492,6 +6498,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6562,6 +6569,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6628,6 +6636,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
@@ -6700,6 +6709,7 @@ value = "Mona Sans VF";
 );
 }
 );
+weightClass = 200;
 type = variable;
 },
 {
diff --git a/sources/README.md b/sources/README.md
index cbdd741e..f808c0aa 100644
--- a/sources/README.md
+++ b/sources/README.md
@@ -10,6 +10,8 @@ Mona Sans VF is exported from the Glyphs interface directly into the /fonts dire
 
 Running `build.sh` will try to move them to the right place, if you don't put them there already.
 
+The variable export settings use an ExtraLight master (`wght=200`) as their Variable Font Origin, so their weight class must also remain 200. If the exported OS/2 weight is 400, Fontconfig treats ExtraLight as Regular and shifts every named weight.
+
 ### Google Fonts Build (`build.sh`)
 
 The `build.sh` script handles building font files that meet Google Fonts specifications and requirements, and builds into the `/googlefonts` folder. It also checks to make sure the other fonts are in the right place.