set bit glyphs

Makefile

@@ -19,7 +19,7 @@ build: build.stamp sources/config.yaml $(SOURCES)
 venv: venv/touchfile
 
 build.stamp: venv .init.stamp
-	. venv/bin/activate; rm -rf fonts/; gftools builder sources/config.yaml && touch build.stamp
+	. venv/bin/activate; rm -rf fonts/; gftools builder sources/config.yaml; python scripts/set_bit6.py && touch build.stamp
 
 .init.stamp: venv
 	. venv/bin/activate; python3 scripts/first-run.py

scripts/set_bit6.py

@@ -0,0 +1,29 @@
+import os
+from fontTools.ttLib import TTFont
+
+
+CWD = os.path.dirname(__file__)
+
+
+def set_overlap_flag(varfont):
+    glyf = varfont["glyf"]
+    for glyph_name in glyf.keys():
+        glyph = glyf[glyph_name]
+        if glyph.isComposite():
+            # Set OVERLAP_COMPOUND bit for compound glyphs
+            glyph.components[0].flags |= 0x400
+        elif glyph.numberOfContours > 0:
+            # Set OVERLAP_SIMPLE bit for simple glyphs
+            glyph.flags[0] |= 0x40
+
+
+def main():
+    font_path = os.path.join(CWD, "..", "fonts", "variable", "RobotoFlex[GRAD,XOPQ,XTRA,YOPQ,YTAS,YTDE,YTFI,YTLC,YTUC,opsz,slnt,wdth,wght].ttf")
+    ttFont = TTFont(font_path)
+    set_overlap_flag(ttFont)
+    print("Glyph bits set!")
+    ttFont.save(ttFont.reader.file.name)
+
+
+if __name__ == "__main__":
+    main()