From: Ben Harris <bjh21@bjh21.me.uk>
Date: Mon, 30 Dec 2024 23:15:54 +0000 (+0000)
Subject: Add data for overriding 'aalt' sometimes
X-Git-Tag: bedstead-3.251~51
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=a0e959cd37d70079d614368bcff8924d52236020;p=bedstead-debian.git

Add data for overriding 'aalt' sometimes

Not used yet.
---

diff --git a/bedstead.c b/bedstead.c
index 4f8bbe5..f351431 100644
--- a/bedstead.c
+++ b/bedstead.c
@@ -2693,6 +2693,22 @@ static int const nglyphs = NGLYPHS;
 
 static struct glyph const *glyphs_by_name[NGLYPHS];
 
+#define MAX_ALT_SUB_OVERRIDE 3
+static struct alt_sub_override {
+	char const *base;
+	char const *alt[MAX_ALT_SUB_OVERRIDE];
+} const aalt_overrides[] = {
+	{ "D", { "D.c2sc", "D.serif", "D.narrow" } },
+	{ "J", { "J.c2sc", "J.narrow", "J.narrow" } },
+	{ "L", { "L.c2sc", "L.narrow", "L.narrow" } },
+	{ "ccedilla", { "ccedilla.angular", "ccedilla.sc" } }, // maybe not?
+	{ "colon", { "colon.leftsmall", "colon.leftsmall" } },
+	{ "ocircumflex", { "ocircumflex.large", "ocircumflex.sc" } }, // maybe not?
+	{ "question", { "question.open", "question.open" } },
+	{ "semicolon", { "semicolon.left", "semicolon.left" } },
+	{ "ugrave", { "ugrave.roundjoined", "ugrave.sc" } }, // maybe not?
+};
+
 #define MAXSUBS 10
 static struct gsub_feature {
 	char const *tag;
@@ -2703,8 +2719,11 @@ static struct gsub_feature {
 	char const *suffix; /* NULL for all alternative glyphs. */
 	char const *subs[MAXSUBS]; /* Individual character substitutions. */
 	char const *name;
+	struct alt_sub_override const *overrides;
+	int noverrides;
 } const gsub_features[] = {
-	{ "aalt", SCRIPT_ALL },
+	{ "aalt", SCRIPT_ALL, .overrides = aalt_overrides,
+	  .noverrides = sizeof(aalt_overrides) / sizeof(aalt_overrides[0]) },
 	{ "smcp", SCRIPT_LATN, .suffix = ".sc" },
 	{ "c2sc", SCRIPT_LATN, .suffix = ".c2sc" },
 	{ "rtlm", SCRIPT_ALL, .suffix = ".rtlm" },