move tt sub "ligatures" from calt to ss05

3 files changed, 37 insertions, 17 deletions

diff --git a/src/Inter.glyphspackage/fontinfo.plist b/src/Inter.glyphspackage/fontinfo.plist
index f93108b2e..dd916347e 100644
--- a/src/Inter.glyphspackage/fontinfo.plist
+++ b/src/Inter.glyphspackage/fontinfo.plist
@@ -2162,7 +2162,7 @@ languagesystem latn CAT;
 name = Languagesystems;
 },
 {
-code = "# used by calt
+code = "# used by ss05
 lookup sub_tt2 {
   sub t by t.1;
 } sub_tt2;
@@ -2423,10 +2423,27 @@ tag = ss03;
 {
 code = "include(features/ss04-disambiguation.fea);
 ";
+labels = (
+{
+language = dflt;
+value = "";
+}
+);
 notes = "Name: ";
 tag = ss04;
 },
 {
+code = "include(features/ss05-tt.fea);
+";
+labels = (
+{
+language = dflt;
+value = "";
+}
+);
+tag = ss05;
+},
+{
 code = "include(features/cv01-one.fea);";
 tag = cv01;
 },
diff --git a/src/features/calt.fea b/src/features/calt.fea
index 1b67187eb..dcd5a05ee 100644
--- a/src/features/calt.fea
+++ b/src/features/calt.fea
@@ -365,20 +365,4 @@ sub @Numeral @Whitespace @Whitespace x' @Whitespace @Whitespace @Numeral by mult
 
 # END NxN
 # -------------------------------------------------------------------------------------
-# BEGIN /t/t => /t/t.1  (horizonal stem on left side cut short)
 
-lookup sub_tt {
-  # glyphs that when followed by SUB_TT_SRC triggers substitution of the 2nd glyph
-  @SUB_TT_PREV1 = [
-    f
-    r
-    t tbar tcaron tccurl tcedilla
-    tcircumflexbelow tcommaaccent tcurl tdieresis
-    tdotaccent tdotbelow tlinebelow tpalatalhook trthook
-    t.1
-  ];
-  @SUB_TT_SRC = [
-    t
-  ];
-  sub @SUB_TT_PREV1 @SUB_TT_SRC' lookup sub_tt2;
-} sub_tt;
diff --git a/src/features/ss05-tt.fea b/src/features/ss05-tt.fea
new file mode 100644
index 000000000..7218233ab
--- /dev/null
+++ b/src/features/ss05-tt.fea
@@ -0,0 +1,19 @@
+# /t/t => /t/t.1  (horizonal stem on left side cut short)
+
+featureNames { name "tt ligatures"; };
+
+lookup sub_tt {
+  # glyphs that when followed by SUB_TT_SRC triggers substitution of the 2nd glyph
+  @SUB_TT_PREV1 = [
+    f
+    r
+    t tbar tcaron tccurl tcedilla
+    tcircumflexbelow tcommaaccent tcurl tdieresis
+    tdotaccent tdotbelow tlinebelow tpalatalhook trthook
+    t.1
+  ];
+  @SUB_TT_SRC = [
+    t
+  ];
+  sub @SUB_TT_PREV1 @SUB_TT_SRC' lookup sub_tt2;
+} sub_tt;