Prevent clipping of texture-extended glyphs in Kitty (#2466)

* Prevent clipping of texture-extended glyphs in Kitty

* doc

changes/31.3.0.md

@@ -1 +1,2 @@
 * Add `diagonal-tailed-cursive` variants for Cyrillic Lower Ef (`cv93`).
+* Prevent clipping of texture-extended glyphs in Kitty.

packages/font-glyphs/src/auto-build/transformed.ptl

@@ -3,7 +3,8 @@ $$include '../meta/macros.ptl'
 
 import [linreg clamp mix fallback] from "@iosevka/util"
 import [getGrTree IsSuperscript IsSubscript AnyCvOrCherryPicking] from "@iosevka/glyph/relation"
-import [AnyLocalizedForm DotlessOrNot CvDecompose MathSansSerif Texture] from "@iosevka/glyph/relation"
+import [AnyLocalizedForm DotlessOrNot CvDecompose MathSansSerif] from "@iosevka/glyph/relation"
+import [Texture Joining] from "@iosevka/glyph/relation"
 import [BooleanGeometry StrokeGeometry] from "@iosevka/geometry"
 import [NumeratorForm DenominatorForm] from "@iosevka/glyph/relation"
 import [Transform] from "@iosevka/geometry/transform"
@@ -725,6 +726,8 @@ glyph-block Autobuild-Transformed-Texture : begin
 					create-glyph targetNameMap.(glyphid) unicode : glyph-proc
 						include glyphT AS_BASE ALSO_METRICS
 						set-width Width
+						if (extL > 0) : Joining.or currentGlyph Joining.Classes.Left
+						if (extR > 0) : Joining.or currentGlyph Joining.Classes.Right
 						if extL : begin
 							local shift : (glyphT.advanceWidth - Width) * extL / (extL + extR)
 							currentGlyph.applyTransform [Translate (-shift) 0] true

packages/glyph/src/relation.mjs

@@ -137,7 +137,7 @@ export const Joining = {
 		glyph.related.joining = cls;
 	},
 	or(glyph, cls) {
-		Joining.set(glyph, cls | Joining.get(cls));
+		Joining.set(glyph, cls | Joining.get(glyph));
 	},
 	amendOtName(baseName, cl) {
 		switch (cl) {