From f6e81fc45bad27876718c67677a0630f7ae07ca5 Mon Sep 17 00:00:00 2001
From: John McWilliams <37010132+jmcwilliams403@users.noreply.github.com>
Date: Tue, 23 Jan 2024 20:53:41 -0500
Subject: [PATCH] Make `cyrl/ue` and `latn/gamma` respond to italics (#2180)

---
 changes/28.0.7.md                                       | 1 +
 packages/font-glyphs/src/letter/latin-ext/rams-horn.ptl | 2 +-
 packages/font-glyphs/src/letter/latin/upper-y.ptl       | 6 ++++++
 params/variants.toml                                    | 2 +-
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/changes/28.0.7.md b/changes/28.0.7.md
index 043b53f8d..ac3c6443d 100644
--- a/changes/28.0.7.md
+++ b/changes/28.0.7.md
@@ -2,3 +2,4 @@
 * Add IPA localization forms for Greek Lower Beta (`β`) and Chi (`χ`).
 * Add APLF variants for `U+25F0`, `U+25F3`, and `U+25F4`.
 * Fix serif form for Cyrillic Lower Tall / Iotified Yat (#2178).
+* Make top serifs of Cyrillic Lower Straight U (`ү`, `ұ`) and Latin Lower Gamma (`ɣ`) respond to italics.
diff --git a/packages/font-glyphs/src/letter/latin-ext/rams-horn.ptl b/packages/font-glyphs/src/letter/latin-ext/rams-horn.ptl
index 90ea3885e..85c176d2b 100644
--- a/packages/font-glyphs/src/letter/latin-ext/rams-horn.ptl
+++ b/packages/font-glyphs/src/letter/latin-ext/rams-horn.ptl
@@ -31,7 +31,7 @@ glyph-block Letter-Latin-Rams-Horn : begin
 		include : LatinGammaShape Descender XH
 		if SLAB : begin
 			local sf : SerifFrame.fromDf [DivFrame 1] XH Descender
-			include : composite-proc sf.lt.full sf.rt.full
+			include : if para.isItalic sf.lt.outer [composite-proc sf.lt.full sf.rt.full]
 
 	create-glyph 'latn/Gamma' 0x194 : glyph-proc
 		include : MarkSet.capDesc
diff --git a/packages/font-glyphs/src/letter/latin/upper-y.ptl b/packages/font-glyphs/src/letter/latin/upper-y.ptl
index 549dd6eab..23ec19383 100644
--- a/packages/font-glyphs/src/letter/latin/upper-y.ptl
+++ b/packages/font-glyphs/src/letter/latin/upper-y.ptl
@@ -20,6 +20,7 @@ glyph-block Letter-Latin-Upper-Y : begin
 	define SLAB-ALL    1
 	define SLAB-BASE   2
 	define SLAB-MOTION 3
+	define SLAB-CYRL   4
 
 	define [YCrossPos top bot] : mix bot top 0.4
 
@@ -31,6 +32,9 @@ glyph-block Letter-Latin-Upper-Y : begin
 				include : HSerif.mb Middle bot MidJutSide
 			[Just SLAB-MOTION] : include sf.lt.outer
 			[Just SLAB-BASE] : include : HSerif.mb Middle bot MidJutSide
+			[Just SLAB-CYRL] : begin
+				include : if para.isItalic sf.lt.outer [composite-proc sf.lt.full sf.rt.full]
+				include : HSerif.mb Middle bot MidJutSide
 
 	define [YShape bodyType slabType top bot] : glyph-proc
 		local cross : YCrossPos top bot
@@ -90,6 +94,8 @@ glyph-block Letter-Latin-Upper-Y : begin
 		curlyMotionSerifed    { BODY-CURLY    SLAB-MOTION }
 		straightSerifed       { BODY-STRAIGHT SLAB-ALL    }
 		curlySerifed          { BODY-CURLY    SLAB-ALL    }
+		straightSmallCyrl     { BODY-STRAIGHT SLAB-CYRL   }
+		curlySmallCyrl        { BODY-CURLY    SLAB-CYRL   }
 
 	foreach { suffix { bodyType slabType } } [Object.entries YConfig] : do
 		create-glyph "Y.\(suffix)" : glyph-proc
diff --git a/params/variants.toml b/params/variants.toml
index 2c969ba79..ca3216453 100644
--- a/params/variants.toml
+++ b/params/variants.toml
@@ -1393,7 +1393,7 @@ selectorAffix.Y = "serifed"
 selectorAffix."Y/sansSerif" = "serifless"
 selectorAffix.YLoop = "serifed"
 selectorAffix."grek/UpsilonHookTop" = "BaseSerifed"
-selectorAffix."cyrl/ue" = "serifed"
+selectorAffix."cyrl/ue" = "smallCyrl"