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-rw-r--r--otfl-features.lua110
1 files changed, 110 insertions, 0 deletions
diff --git a/otfl-features.lua b/otfl-features.lua
new file mode 100644
index 0000000..aae0515
--- /dev/null
+++ b/otfl-features.lua
@@ -0,0 +1,110 @@
+--[[doc--
+Taken from the most recent branch of luaotfload.
+--doc]]--
+local addotffeature = fonts.handlers.otf.addfeature
+local registerotffeature = fonts.handlers.otf.features.register
+
+local everywhere = { ["*"] = { ["*"] = true } }
+
+local tlig = {
+ {
+ type = "substitution",
+ features = everywhere,
+ data = {
+ [0x0022] = 0x201D, -- quotedblright
+ [0x0027] = 0x2019, -- quoteleft
+ [0x0060] = 0x2018, -- quoteright
+ },
+ flags = { },
+ },
+ {
+ type = "ligature",
+ features = everywhere,
+ data = {
+ [0x2013] = {0x002D, 0x002D}, -- endash
+ [0x2014] = {0x002D, 0x002D, 0x002D}, -- emdash
+ [0x201C] = {0x2018, 0x2018}, -- quotedblleft
+ [0x201D] = {0x2019, 0x2019}, -- quotedblright
+ [0x201E] = {0x002C, 0x002C}, -- quotedblbase
+ [0x00A1] = {0x0021, 0x2018}, -- exclamdown
+ [0x00BF] = {0x003F, 0x2018}, -- questiondown
+ },
+ flags = { },
+ },
+ {
+ type = "ligature",
+ features = everywhere,
+ data = {
+ [0x201C] = {0x0060, 0x0060}, -- quotedblleft
+ [0x201D] = {0x0027, 0x0027}, -- quotedblright
+ [0x00A1] = {0x0021, 0x0060}, -- exclamdown
+ [0x00BF] = {0x003F, 0x0060}, -- questiondown
+ },
+ flags = { },
+ },
+}
+
+addotffeature("tlig", tlig)
+addotffeature("trep", { }) -- empty, all in tlig now
+local anum_arabic = {
+ [0x0030] = 0x0660,
+ [0x0031] = 0x0661,
+ [0x0032] = 0x0662,
+ [0x0033] = 0x0663,
+ [0x0034] = 0x0664,
+ [0x0035] = 0x0665,
+ [0x0036] = 0x0666,
+ [0x0037] = 0x0667,
+ [0x0038] = 0x0668,
+ [0x0039] = 0x0669,
+}
+
+local anum_persian = {
+ [0x0030] = 0x06F0,
+ [0x0031] = 0x06F1,
+ [0x0032] = 0x06F2,
+ [0x0033] = 0x06F3,
+ [0x0034] = 0x06F4,
+ [0x0035] = 0x06F5,
+ [0x0036] = 0x06F6,
+ [0x0037] = 0x06F7,
+ [0x0038] = 0x06F8,
+ [0x0039] = 0x06F9,
+}
+
+local function valid(data)
+ local features = data.resources.features
+ if features then
+ for k, v in next, features do
+ for k, v in next, v do
+ if v.arab then
+ return true
+ end
+ end
+ end
+ end
+end
+
+local anum_specification = {
+ {
+ type = "substitution",
+ features = { arab = { far = true, urd = true, snd = true } },
+ data = anum_persian,
+ flags = { },
+ valid = valid,
+ },
+ {
+ type = "substitution",
+features = { arab = { ["*"] = true } },
+ data = anum_arabic,
+ flags = { },
+ valid = valid,
+ },
+}
+
+addotffeature("anum",anum_specification)
+
+registerotffeature {
+ name = 'anum',
+ description = 'arabic digits',
+}