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Diffstat (limited to 'src/fontloader/misc/fontloader-font-otn.lua')
-rw-r--r--src/fontloader/misc/fontloader-font-otn.lua70
1 files changed, 65 insertions, 5 deletions
diff --git a/src/fontloader/misc/fontloader-font-otn.lua b/src/fontloader/misc/fontloader-font-otn.lua
index b48aea7..081630a 100644
--- a/src/fontloader/misc/fontloader-font-otn.lua
+++ b/src/fontloader/misc/fontloader-font-otn.lua
@@ -246,6 +246,7 @@ local zwj = 0x200D
local wildcard = "*"
local default = "dflt"
+local whatcodes = nodes.whatcodes
local nodecodes = nodes.nodecodes
local glyphcodes = nodes.glyphcodes
local disccodes = nodes.disccodes
@@ -253,9 +254,10 @@ local disccodes = nodes.disccodes
local glyph_code = nodecodes.glyph
local glue_code = nodecodes.glue
local disc_code = nodecodes.disc
+local whatsit_code = nodecodes.whatsit
local math_code = nodecodes.math
-local dir_code = nodecodes.dir
-local localpar_code = nodecodes.localpar
+local dir_code = nodecodes.dir or whatcodes.dir
+local localpar_code = nodecodes.localpar or whatcodes.localpar
local discretionary_code = disccodes.discretionary
local ligature_code = glyphcodes.ligature
@@ -3358,6 +3360,37 @@ local function featuresprocessor(head,font,attr)
comprun(start,c_run)
start = getnext(start)
end
+ elseif id == whatsit_code then
+ local subtype = getsubtype(start)
+ if subtype == dir_code then
+ local dir = getfield(start,"dir")
+ if dir == "+TLT" then
+ topstack = topstack + 1
+ dirstack[topstack] = dir
+ rlmode = 1
+ elseif dir == "+TRT" then
+ topstack = topstack + 1
+ dirstack[topstack] = dir
+ rlmode = -1
+ elseif dir == "-TLT" or dir == "-TRT" then
+ topstack = topstack - 1
+ rlmode = dirstack[topstack] == "+TRT" and -1 or 1
+ else
+ rlmode = rlparmode
+ end
+ elseif subtype == localpar_code then
+ local dir = getfield(start,"dir")
+ if dir == "TRT" then
+ rlparmode = -1
+ elseif dir == "TLT" then
+ rlparmode = 1
+ else
+ rlparmode = 0
+ end
+ -- one might wonder if the par dir should be looked at, so we might as well drop the n
+ rlmode = rlparmode
+ end
+ start = getnext(start)
elseif id == math_code then
start = getnext(end_of_math(start))
elseif id == dir_code then
@@ -3628,6 +3661,36 @@ local function featuresprocessor(head,font,attr)
comprun(start,c_run)
start = getnext(start)
end
+ elseif id == whatsit_code then
+ local subtype = getsubtype(start)
+ if subtype == dir_code then
+ local dir = getfield(start,"dir")
+ if dir == "+TLT" then
+ topstack = topstack + 1
+ dirstack[topstack] = dir
+ rlmode = 1
+ elseif dir == "+TRT" then
+ topstack = topstack + 1
+ dirstack[topstack] = dir
+ rlmode = -1
+ elseif dir == "-TLT" or dir == "-TRT" then
+ topstack = topstack - 1
+ rlmode = dirstack[topstack] == "+TRT" and -1 or 1
+ else
+ rlmode = rlparmode
+ end
+ elseif subtype == localpar_code then
+ local dir = getfield(start,"dir")
+ if dir == "TRT" then
+ rlparmode = -1
+ elseif dir == "TLT" then
+ rlparmode = 1
+ else
+ rlparmode = 0
+ end
+ rlmode = rlparmode
+ end
+ start = getnext(start)
elseif id == math_code then
start = getnext(end_of_math(start))
elseif id == dir_code then
@@ -3894,9 +3957,6 @@ local function prepare_contextchains(tfmdata)
sequence[nofsequences] = after[n]
end
end
---[[phg-- Hard patch: This crashes, see https://github.com/lualatex/luaotfload/issues/303
- if sequence[1] then
---phg]]--
if sequence[start] then
-- Replacements only happen with reverse lookups as they are single only. We
-- could pack them into current (replacement value instead of true) and then