[latex3-commits] [git/LaTeX3-latex3-luaotfload] dev: Load variable fonts without explicit axis values (3aefc9b)

[Marcel Fabian Krüger]

Repository : https://github.com/latex3/luaotfload
On branch  : dev
Link       : https://github.com/latex3/luaotfload/commit/3aefc9b06f28a8b233fd3af2117ade712eb4760c

>---------------------------------------------------------------

commit 3aefc9b06f28a8b233fd3af2117ade712eb4760c
Author: Marcel Fabian Krüger <tex at 2krueger.de>
Date:   Sun Apr 25 13:07:43 2021 +0200

    Load variable fonts without explicit axis values


>---------------------------------------------------------------

3aefc9b06f28a8b233fd3af2117ade712eb4760c
 src/luaotfload-features.lua | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/luaotfload-features.lua b/src/luaotfload-features.lua
index f3d6136..f3ef81a 100644
--- a/src/luaotfload-features.lua
+++ b/src/luaotfload-features.lua
@@ -509,6 +509,17 @@ do
         end
         return factors
     end
+
+    -- Additionally we patch trytosharefont to ensure that variable fonts work
+    -- with default values whenever no explicit values are passed.
+    local original_trytosharefont = fonts.constructors.trytosharefont
+    function fonts.constructors.trytosharefont(target, tfmdata)
+        original_trytosharefont(target, tfmdata)
+        if not target.streamprovider and tfmdata.resources.variabledata then
+            local format = tfmdata.properties.format
+            target.streamprovider = format == 'opentype' and 1 or format == 'truetype' and 2 or 0
+        end
+    end
 end
 
 -- MK: Added