Fix shape of BLANK SYMBOL (U+2422, #1406).

changes/16.0.1.md

@@ -1,2 +1,3 @@
  * Fix `cv99` application on ASCII single quotes and graves (#1404).
  * Fix `cv44` application on certain t-derived letters (`U+01AB`, `U+0236`, `U+0288`, `U+1DB5`, and `U+20A7`) (#1405).
+ * Fix shape of BLANK SYMBOL (`U+2422`, #1406).

font-src/glyphs/letter/latin/lower-b.ptl

@@ -49,10 +49,18 @@ glyph-block Letter-Latin-Lower-B : begin
 			set-base-anchor 'overlayOnBar' (SB + 0.5 * Stroke * HVContrast) yOverlay
 		create-glyph "bBar.\(suffix)" : glyph-proc
 			include [refer-glyph "b.\(suffix)"] AS_BASE ALSO_METRICS
-			include : HOverlayBar [mix SB 0 0.7] [mix SB RightSB 0.5] yOverlay
+			include : HOverlayBar [mix SB 0 0.7] [mix SB RightSB 0.625] yOverlay
+		create-glyph "bSlash.\(suffix)" : glyph-proc
+			include [refer-glyph "b.\(suffix)"] AS_BASE ALSO_METRICS
+			include : dispiro
+				widths.center OverlayStroke
+				flat [mix SB 0       0.7]   (yOverlay - Ascender * 0.1)
+				curl [mix SB RightSB 0.625] (yOverlay + Ascender * 0.05)
+
+	select-variant 'b'      'b'
+	select-variant 'bBar'   0x180  (follow -- 'b')
+	select-variant 'bSlash' 0x2422 (follow -- 'b')
 
-	select-variant 'b' 'b'
-	select-variant 'bBar' 0x180 (follow -- 'b')
 	link-reduced-variant 'b/sansSerif' 'b' MathSansSerif
 	CreateAccentedComposition 'bTildeOver' 0x1D6C 'b' 'tildeOverOnBar'
 

font-src/meta/unicode-knowledge.ptl

@@ -164,5 +164,3 @@ export : define decompositionOverrides : object
 	."\u219A" ""
 	."\u219B" ""
 	."\u21AE" ""
-
-	."\u2422" "b\u0338"