Fix issue with fontra source name

src/fontra_glyphs/backend.py

@@ -43,6 +43,7 @@
     convertMatchesToTuples,
     getAssociatedMasterId,
     getLocationFromSources,
+    getSourceNameWithLayerName,
     matchTreeFont,
 )
 
@@ -289,7 +290,9 @@ async def getGlyph(self, glyphName: str) -> VariableGlyph | None:
             braceLocation = self._getBraceLayerLocation(gsLayer)
             smartLocation = self._getSmartLocation(gsLayer, localAxesByName)
             masterName = self.gsFont.masters[gsLayer.associatedMasterId].name
-            if braceLocation or smartLocation:
+            if gsLayer.userData["xyz.fontra.source-name"]:
+                sourceName = gsLayer.userData["xyz.fontra.source-name"]
+            elif braceLocation or smartLocation:
                 sourceName = f"{masterName} / {gsLayer.name}"
             else:
                 sourceName = gsLayer.name or masterName
@@ -777,6 +780,9 @@ def variableGlyphToGSGlyph(variableGlyph, gsGlyph):
             gsLayer.layerId = layerName
             gsLayer.isSpecialLayer = True
 
+            sourceName = getSourceNameWithLayerName(variableGlyph.sources, layerName)
+            gsLayer.userData["xyz.fontra.source-name"] = sourceName
+
             location = getLocationFromSources(variableGlyph.sources, layerName)
             gsLocation = [
                 location[axis.name.lower()]

src/fontra_glyphs/utils.py

@@ -7,6 +7,12 @@ def getLocationFromSources(sources, layerName):
     return {k.lower(): v for k, v in s.location.items()}
 
 
+def getSourceNameWithLayerName(sources, layerName):
+    for source in sources:
+        if source.layerName == layerName:
+            return source.name
+
+
 def getAssociatedMasterId(gsFont, gsLocation):
     # Best guess for associatedMasterId
     closestMasterID = gsFont.masters[0].id  # default first master.