From 87f225e7329c8bb110ff594737365cf5311adc28 Mon Sep 17 00:00:00 2001
From: Khaled Hosny <khaledhosny@eglug.org>
Date: Tue, 13 Jul 2010 20:59:37 +0300
Subject: Allow stylistic sets features in base mode

---
 luaotfload.dtx | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'luaotfload.dtx')

diff --git a/luaotfload.dtx b/luaotfload.dtx
index 01bdeec..4fbb913 100644
--- a/luaotfload.dtx
+++ b/luaotfload.dtx
@@ -674,6 +674,25 @@ end
 
 fonts.mode = "node"
 
+%    \end{macrocode}
+%
+%    The following features are useful in math (e.g. in XITS Math font),
+%    but \textsf{luaotfload} does not recognize them in |base| mode.
+%
+%    \begin{macrocode}
+
+local register_base_sub = fonts.otf.features.register_base_substitution
+local gsubs = {
+    "ss01", "ss02", "ss03", "ss04", "ss05",
+    "ss06", "ss07", "ss08", "ss09", "ss10",
+    "ss11", "ss12", "ss13", "ss14", "ss15",
+    "ss16", "ss17", "ss18", "ss19", "ss20",
+}
+
+for _,v in next, gsubs do
+    register_base_sub(v)
+end
+
 %    \end{macrocode}
 %
 %    Finally two functions
-- 
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