Improve widths of overlines in Serbian italics. (#2496)

changes/31.6.2.md

 - Fix Macedonian Cyrillic Gje under italics (#2493).
+- Improve widths of overline marks of Serbian italic lower Ghe/Pe/Te.

packages/font-glyphs/src/letter/latin/lower-il.ptl

@@ -10,8 +10,7 @@ glyph-block Letter-Latin-Lower-I : begin
 	glyph-block-import Common-Derivatives
 	glyph-block-import Mark-Adjustment : LeaningAnchor ExtendBelowBaseAnchors
 	glyph-block-import Letter-Shared : CreateAccentedComposition CreateMultiAccentedComposition
-	glyph-block-import Letter-Shared : CreateCommaCaronComposition
-	glyph-block-import Letter-Shared : CreateTurnedLetter
+	glyph-block-import Letter-Shared : CreateCommaCaronComposition CreateTurnedLetter
 	glyph-block-import Letter-Shared-Shapes : FlatHookDepth DiagTail
 	glyph-block-import Letter-Shared-Shapes : CurlyTail BeltOverlay PalatalHook
 	glyph-block-import Letter-Shared-Shapes : RetroflexHook LetterBarOverlay RightwardTailedBar
@@ -265,8 +264,8 @@ glyph-block Letter-Latin-Lower-I : begin
 				maskOut -- [MaskAbove maskY]
 
 		create-glyph "lHighBar.\(suffix)" : glyph-proc
-			include [refer-glyph "l.\(suffix)"] AS_BASE ALSO_METRICS
 			local df : DivFrame div
+			include [refer-glyph "l.\(suffix)"] AS_BASE ALSO_METRICS
 			include : LetterBarOverlay.m.in [xMiddleT df] XH (Ascender - [if Serif Stroke 0])
 
 		create-glyph "grek/tau.\(suffix)" : glyph-proc
@@ -276,7 +275,6 @@ glyph-block Letter-Latin-Lower-I : begin
 			include : Body df XH xMiddle
 			include : Marks df XH xMiddle
 			include : HBar.t df.leftSB df.rightSB XH
-
 			currentGlyph.deleteBaseAnchor 'trailing'
 
 		create-glyph "cyrl/Twe/middle.\(suffix)" : glyph-proc
@@ -288,8 +286,8 @@ glyph-block Letter-Latin-Lower-I : begin
 
 		create-glyph "cyrl/twe/middle.\(suffix)" : glyph-proc
 			local df : include : DivFrame div
-			include : Body df XH  [XMiddle.Center df]
-			include : Marks df XH  [XMiddle.Center df]
+			include : Body df XH [XMiddle.Center df]
+			include : Marks df XH [XMiddle.Center df]
 			currentGlyph.deleteBaseAnchor 'trailing'
 			set-mark-anchor 'cvDecompose' (df.width / 2) XH
 
@@ -319,8 +317,8 @@ glyph-block Letter-Latin-Lower-I : begin
 		alias 'cyrl/Iota' 0xA646 'latn/Iota'
 
 		select-variant 'cyrl/ghe.SRB/base' (shapeFrom -- 'dotlessi') (follow -- 'cyrl/ghe.SRB')
-		CreateAccentedComposition      'cyrl/ghe.SRB' null 'cyrl/ghe.SRB/base'   'macronAbove'
-		CreateMultiAccentedComposition 'cyrl/gje.SRB' null 'cyrl/ghe.SRB/base' { 'macronAbove' 'acuteAbove' }
+		CreateAccentedComposition      'cyrl/ghe.SRB' null 'cyrl/ghe.SRB/base'   'sbRsbOverlineAbove/diversityI'
+		CreateMultiAccentedComposition 'cyrl/gje.SRB' null 'cyrl/ghe.SRB/base' { 'sbRsbOverlineAbove/diversityI' 'acuteAbove' }
 
 		CreateTurnedLetter 'turni' 0x1D09 'i' HalfAdvance (XH / 2)
 		CreateTurnedLetter 'grek/turniota' 0x2129 'latn/iota' HalfAdvance (XH / 2)

packages/font-glyphs/src/letter/latin/lower-m.ptl

@@ -422,8 +422,8 @@ glyph-block Letter-Latin-Lower-M : begin
 	select-variant 'cyrl/shcha/reduced.italic' (shapeFrom -- 'cyrl/shcha.italic') (follow -- 'cyrl/shcha.italic/reduced')
 	alias 'cyrl/shcha/reduced.BGR' null 'cyrl/shcha/reduced.italic'
 
-	derive-composites 'cyrl/te.SRB' null 'cyrl/sha.italic' 'macronAbove'
-	derive-composites 'cyrl/te/reduced.SRB' null 'cyrl/sha/reduced.italic' 'macronAbove'
+	derive-composites 'cyrl/te.SRB' null 'cyrl/sha.italic' 'sbRsbOverlineAbove/diversityM'
+	derive-composites 'cyrl/te/reduced.SRB' null 'cyrl/sha/reduced.italic' 'sbRsbOverlineAbove/diversityM'
 
 	glyph-block-import Letter-Blackboard : BBS BBD BBBarLeft
 	create-glyph 'mathbb/m' 0x1D55E : glyph-proc

packages/font-glyphs/src/letter/latin/u.ptl

@@ -352,7 +352,7 @@ glyph-block Letter-Latin-U : begin
 
 	derive-glyphs 'cyrl/pe.SRB' null 'cyrl/i.italic' : lambda [src gr] : glyph-proc
 		include [refer-glyph src] AS_BASE ALSO_METRICS
-		include [refer-glyph 'macronAbove']
+		include [refer-glyph 'sbRsbOverlineAbove']
 
 	derive-glyphs 'cyrl/tetse.italic' null 'cyrl/tse.italic' : lambda [src gr] : glyph-proc
 		include [refer-glyph src] AS_BASE ALSO_METRICS
@@ -418,6 +418,22 @@ glyph-block Letter-Latin-U : begin
 		if SLAB : begin
 			include : HSerif.lt SB XH SideJut
 
+	CreateAccentedComposition 'uDieresis' 0xFC 'u' 'dieresisAbove'
+	CreateAccentedComposition 'uLongBarOver' 0x289 'u' 'hStrike'
+	CreateAccentedComposition 'smcpUStroke' 0x1D7E 'smcpU' 'hStrike'
+
+	# Sideways dieresis for U+1D1E
+	derive-glyphs "uDieresisSidewaysMark" null "dieresisAboveAlwaysUpright" : function [gns] : glyph-proc
+		local ww : Width * para.diversityM
+		set-width 0
+		set-mark-anchor 'cvDecompose' 0 0
+		include : PointingTo ww XH ww 0 : function [] : glyph-proc
+			include : refer-glyph gns
+			include : Translate (XH / 2 + Width / 2) (ww - SB - XH - AccentHeight)
+			include : Translate 0 (SB / 2)
+
+	CreateAccentedComposition 'uDieresisSideways' 0x1D1E 'uDieresisSidewaysBase' 'uDieresisSidewaysMark'
+
 	glyph-block-import Letter-Blackboard : BBS BBD BBBarRight
 	create-glyph 'mathbb/U' 0x1D54C : glyph-proc
 		include : MarkSet.capital
@@ -436,19 +452,3 @@ glyph-block Letter-Latin-U : begin
 		include : df.markSet.e
 		include [refer-glyph 'mathbb/n']
 		include : FlipAround Middle (XH / 2)
-
-	CreateAccentedComposition 'uDieresis' 0xFC 'u' 'dieresisAbove'
-	CreateAccentedComposition 'uLongBarOver' 0x289 'u' 'hStrike'
-	CreateAccentedComposition 'smcpUStroke' 0x1D7E 'smcpU' 'hStrike'
-
-	# Sideways dieresis for U+1D1E
-	derive-glyphs "uDieresisSidewaysMark" null "dieresisAboveAlwaysUpright" : function [gns] : glyph-proc
-		local ww : Width * para.diversityM
-		set-width 0
-		set-mark-anchor 'cvDecompose' 0 0
-		include : PointingTo ww XH ww 0 : function [] : glyph-proc
-			include : refer-glyph gns
-			include : Translate (XH / 2 + Width / 2) (ww - SB - XH - AccentHeight)
-			include : Translate 0 (SB / 2)
-
-	CreateAccentedComposition 'uDieresisSideways' 0x1D1E 'uDieresisSidewaysBase' 'uDieresisSidewaysMark'

packages/font-glyphs/src/marks/above.ptl

@@ -469,8 +469,8 @@ glyph-block Mark-Above : begin
 		set-width 0
 		include : StdAnchors.wide
 
-		local leftEnd  (markMiddle - markExtend * 1.5)
-		local rightEnd (markMiddle + markExtend * 1.5)
+		local leftEnd  : markMiddle - markExtend * 1.5
+		local rightEnd : markMiddle + markExtend * 1.5
 
 		include : dispiro
 			flat leftEnd  aboveMarkMid [widths.center : 2 * markHalfStroke]
@@ -490,6 +490,30 @@ glyph-block Mark-Above : begin
 			flat (SB - Width)      aboveMarkMid [widths.center : 2 * markHalfStroke]
 			curl (RightSB - Width) aboveMarkMid
 
+	create-glyph 'sbRsbOverlineAbove/diversityI' : glyph-proc
+		local df : DivFrame para.diversityI
+		set-width 0
+		include : StdAnchors.impl 'above' 0 (1.5 * df.div)
+
+		local leftEnd  : markMiddle - (df.rightSB - df.leftSB) / 2
+		local rightEnd : markMiddle + (df.rightSB - df.leftSB) / 2
+
+		include : dispiro
+			flat leftEnd  aboveMarkMid [widths.center : 2 * markHalfStroke]
+			curl rightEnd aboveMarkMid
+
+	create-glyph 'sbRsbOverlineAbove/diversityM' : glyph-proc
+		local df : DivFrame para.diversityM
+		set-width 0
+		include : StdAnchors.impl 'above' 0 (1.5 * df.div)
+
+		local leftEnd  : markMiddle - (df.rightSB - df.leftSB) / 2
+		local rightEnd : markMiddle + (df.rightSB - df.leftSB) / 2
+
+		include : dispiro
+			flat leftEnd  aboveMarkMid [widths.center : 2 * markHalfStroke]
+			curl rightEnd aboveMarkMid
+
 	create-glyph 'latin1macron' 0xAF : glyph-proc
 		local df : include : DivFrame 1
 		include : dispiro