diff options
author | Norbert Preining <norbert@preining.info> | 2022-02-26 03:00:34 +0000 |
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committer | Norbert Preining <norbert@preining.info> | 2022-02-26 03:00:34 +0000 |
commit | 740a11f29a3551babe3d7edbb57ac3baa2280a3f (patch) | |
tree | 5d6d449e762f5ab95042e3517d03c5ac3ddaf7c3 /macros/luatex/generic/luaotfload/fontloader-font-ots.lua | |
parent | 157cc9e776520d0b7d488317a69a10d4ae4d493b (diff) |
CTAN sync 202202260300
Diffstat (limited to 'macros/luatex/generic/luaotfload/fontloader-font-ots.lua')
-rw-r--r-- | macros/luatex/generic/luaotfload/fontloader-font-ots.lua | 121 |
1 files changed, 82 insertions, 39 deletions
diff --git a/macros/luatex/generic/luaotfload/fontloader-font-ots.lua b/macros/luatex/generic/luaotfload/fontloader-font-ots.lua index 30d79c4077..7de108d4c8 100644 --- a/macros/luatex/generic/luaotfload/fontloader-font-ots.lua +++ b/macros/luatex/generic/luaotfload/fontloader-font-ots.lua @@ -163,6 +163,8 @@ local trace_testruns = false registertracker("otf.testruns", function local forcediscretionaries = false local forcepairadvance = false -- for testing +local repeatablemultiples = context or false + directives.register("otf.forcediscretionaries",function(v) forcediscretionaries = v end) @@ -648,16 +650,52 @@ local function multiple_glyphs(head,start,multiple,skiphash,what,stop) -- what t insertnodeafter(head,start,n) start = n end - if what == true then - -- we're ok - elseif what > 1 then - local m = multiple[nofmultiples] - for i=2,what do - local n = copy_node(start) -- ignore components - resetinjection(n) - setchar(n,m) - insertnodeafter(head,start,n) - start = n + if what ~= true and repeatablemultiples then + -- This is just some experimental code; we might introduce gsub_extensible + -- some day instead. Beware: when we have a feature that mixes alternates and + -- multiples we need to make sure we don't handle the alternate string values + -- here. This might eventually become an lmtx only feature. + local kind = type(what) + local m, f, l + if kind == "string" then + local what, n = string.match(what,"^repeat(.-)[:=](%d+)$") + if what == "middle" then + m = tonumber(n) + elseif what == "first" then + f = tonumber(n) + elseif what == "last" then + l = tonumber(n) + end + elseif kind == "table" then + -- won't happen because currently we don't split these values + m = what.middle + f = what.first + l = what.last + end + if f or m or l then + if m and m > 1 and nofmultiples == 3 then + local middle = getnext(first) + for i=2,m do + local n = copynode(middle) -- ignore components + resetinjection(n) + insertnodeafter(head,first,n) + end + end + if f and f > 1 then + for i=2,f do + local n = copynode(first) -- ignore components + resetinjection(n) + insertnodeafter(head,first,n) + end + end + if l and l > 1 then + for i=2,l do + local n = copynode(start) -- ignore components + resetinjection(n) + insertnodeafter(head,start,n) + start = n + end + end end end end @@ -763,7 +801,7 @@ function handlers.gsub_ligature(head,start,dataset,sequence,ligature,rlmode,skip while current do local char = ischar(current,currentfont) if char then - local lg = ligature[char] + local lg = not tonumber(ligature) and ligature[char] if lg then stop = current ligature = lg @@ -776,14 +814,14 @@ function handlers.gsub_ligature(head,start,dataset,sequence,ligature,rlmode,skip end end if stop then - local lig = ligature.ligature - if lig then + local ligature = tonumber(ligature) or ligature.ligature + if ligature then if trace_ligatures then local stopchar = getchar(stop) - head, start = markstoligature(head,start,stop,lig) + head, start = markstoligature(head,start,stop,ligature) logprocess("%s: replacing %s upto %s by ligature %s case 1",pref(dataset,sequence),gref(startchar),gref(stopchar),gref(getchar(start))) else - head, start = markstoligature(head,start,stop,lig) + head, start = markstoligature(head,start,stop,ligature) end return head, start, true, false else @@ -799,7 +837,7 @@ function handlers.gsub_ligature(head,start,dataset,sequence,ligature,rlmode,skip if skiphash and skiphash[char] then current = getnext(current) else - local lg = ligature[char] + local lg = not tonumber(ligature) and ligature[char] if lg then if marks[char] then hasmarks = true @@ -833,20 +871,20 @@ function handlers.gsub_ligature(head,start,dataset,sequence,ligature,rlmode,skip local match if replace then local char = ischar(replace,currentfont) - if char and ligature[char] then + if char and (not tonumber(ligature) and ligature[char]) then match = true end end if not match and pre then local char = ischar(pre,currentfont) - if char and ligature[char] then + if char and (not tonumber(ligature) and ligature[char]) then match = true end end if not match and not pre or not replace then local n = getnext(discfound) local char = ischar(n,currentfont) - if char and ligature[char] then + if char and (not tonumber(ligature) and ligature[char]) then match = true end end @@ -890,24 +928,26 @@ function handlers.gsub_ligature(head,start,dataset,sequence,ligature,rlmode,skip return head, start, true, true end end - local lig = ligature.ligature - if lig then + local ligature = tonumber(ligature) or ligature.ligature + if ligature then if stop then if trace_ligatures then local stopchar = getchar(stop) - -- head, start = toligature(head,start,stop,lig,dataset,sequence,skiphash,discfound,hasmarks) - head, start = toligature(head,start,stop,lig,dataset,sequence,skiphash,false,hasmarks) - logprocess("%s: replacing %s upto %s by ligature %s case 2",pref(dataset,sequence),gref(startchar),gref(stopchar),gref(lig)) + -- head, start = toligature(head,start,stop,ligature,dataset,sequence,skiphash,discfound,hasmarks) + head, start = toligature(head,start,stop,ligature,dataset,sequence,skiphash,false,hasmarks) + logprocess("%s: replacing %s upto %s by ligature %s case 2",pref(dataset,sequence),gref(startchar),gref(stopchar),gref(ligature)) + -- we can have a rare case of multiple disc in a lig but that makes no sense language wise but if really + -- needed we could backtrack if we're in a disc node else - -- head, start = toligature(head,start,stop,lig,dataset,sequence,skiphash,discfound,hasmarks) - head, start = toligature(head,start,stop,lig,dataset,sequence,skiphash,false,hasmarks) + -- head, start = toligature(head,start,stop,ligature,dataset,sequence,skiphash,discfound,hasmarks) + head, start = toligature(head,start,stop,ligature,dataset,sequence,skiphash,false,hasmarks) end else -- weird but happens (in some arabic font) resetinjection(start) - setchar(start,lig) + setchar(start,ligature) if trace_ligatures then - logprocess("%s: replacing %s by (no real) ligature %s case 3",pref(dataset,sequence),gref(startchar),gref(lig)) + logprocess("%s: replacing %s by (no real) ligature %s case 3",pref(dataset,sequence),gref(startchar),gref(ligature)) end end return head, start, true, false @@ -1050,7 +1090,7 @@ function handlers.gpos_mark2base(head,start,dataset,sequence,markanchors,rlmode, end return head, start, true elseif trace_bugs then - -- onetimemessage(currentfont,basechar,"no base anchors",report_fonts) + -- onetimemessage(currentfont,basechar,"no base anchors") logwarning("%s: mark %s is not anchored to %s",pref(dataset,sequence),gref(markchar),gref(basechar)) end elseif trace_bugs then @@ -1116,7 +1156,7 @@ function handlers.gpos_mark2ligature(head,start,dataset,sequence,markanchors,rlm end elseif trace_bugs then -- logwarning("%s: char %s is missing in font",pref(dataset,sequence),gref(basechar)) - onetimemessage(currentfont,basechar,"no base anchors",report_fonts) + onetimemessage(currentfont,basechar,"no base anchors") end elseif trace_bugs then logwarning("%s: prev node is no char, case %i",pref(dataset,sequence),1) @@ -1484,7 +1524,7 @@ function chainprocs.gsub_ligature(head,start,stop,dataset,sequence,currentlookup current = getnext(current) -- end else - local lg = ligatures[schar] + local lg = not tonumber(ligatures) and ligatures[schar] if lg then ligatures = lg last = current @@ -1503,7 +1543,7 @@ function chainprocs.gsub_ligature(head,start,stop,dataset,sequence,currentlookup end end end - local ligature = ligatures.ligature + local ligature = tonumber(ligatures) or ligatures.ligature if ligature then if chainindex then stop = last @@ -1856,7 +1896,7 @@ function chainprocs.gpos_cursive(head,start,stop,dataset,sequence,currentlookup, end end elseif trace_bugs then - onetimemessage(currentfont,startchar,"no entry anchors",report_fonts) + onetimemessage(currentfont,startchar,"no entry anchors") end break end @@ -1978,7 +2018,9 @@ local function chainrun(head,start,last,dataset,sequence,rlmode,skiphash,ck) local chainproc = chainprocs[chainkind] if chainproc then local ok - head, start, ok = chainproc(head,start,last,dataset,sequence,chainstep,rlmode,skiphash) + -- HH: chainindex 1 added here (for KAI to check too), there are weird ligatures e.g. + -- char + mark -> char where mark has to disappear + head, start, ok = chainproc(head,start,last,dataset,sequence,chainstep,rlmode,skiphash,1) if ok then done = true end @@ -2471,6 +2513,7 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode,s local ck = contexts[k] local seq = ck[3] local f = ck[4] -- first current +local last = start if not startchar or not seq[f][startchar] then -- report("no hit in %a at %i of %i contexts",sequence.type,k,nofcontexts) goto next @@ -2481,7 +2524,7 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode,s else local l = ck[5] -- last current local current = start - local last = start +-- local last = start -- current match @@ -3409,7 +3452,7 @@ local function t_run_single(start,stop,font,attr,lookupcache) while s do local char = ischar(s,font) if char then - local lg = lookupmatch[char] + local lg = not tonumber(lookupmatch) and lookupmatch[char] if lg then if sstop then d = 1 @@ -3439,7 +3482,7 @@ local function t_run_single(start,stop,font,attr,lookupcache) break end end - if l and l.ligature then -- so we test for ligature + if l and (tonumber(l) or l.ligature) then -- so we test for ligature lastd = d end -- why not: if not l then break elseif l.ligature then return d end @@ -3580,7 +3623,7 @@ local function t_run_multiple(start,stop,font,attr,steps,nofsteps) while s do local char = ischar(s) if char then - local lg = lookupmatch[char] + local lg = not tonumber(lookupmatch) and lookupmatch[char] if lg then if sstop then d = 1 @@ -3610,7 +3653,7 @@ local function t_run_multiple(start,stop,font,attr,steps,nofsteps) break end end - if l and l.ligature then + if l and (tonumber(l) or l.ligature) then lastd = d end end |