diff options
Diffstat (limited to 'tex/context/base/mkxl/font-ots.lmt')
| -rw-r--r-- | tex/context/base/mkxl/font-ots.lmt | 71 |
1 files changed, 55 insertions, 16 deletions
diff --git a/tex/context/base/mkxl/font-ots.lmt b/tex/context/base/mkxl/font-ots.lmt index dcafac025..f83fd8776 100644 --- a/tex/context/base/mkxl/font-ots.lmt +++ b/tex/context/base/mkxl/font-ots.lmt @@ -162,6 +162,8 @@ local trace_testruns = false registertracker("otf.testruns", function local forcediscretionaries = false local forcepairadvance = false -- for testing +local repeatlastmultiple = context and true + directives.register("otf.forcediscretionaries",function(v) forcediscretionaries = v end) @@ -650,11 +652,12 @@ end local function multiple_glyphs(head,start,multiple,skiphash,what,stop) -- what to do with skiphash matches here local nofmultiples = #multiple if nofmultiples > 0 then + local first = start resetinjection(start) setchar(start,multiple[1]) if nofmultiples > 1 then - local sn = getnext(start) - for k=2,nofmultiples do + -- local sn = getnext(start) + for i=2,nofmultiples do -- untested: -- -- while ignoremarks and marks[getchar(sn)] then @@ -662,20 +665,56 @@ local function multiple_glyphs(head,start,multiple,skiphash,what,stop) -- what t -- end local n = copynode(start) -- ignore components resetinjection(n) - setchar(n,multiple[k]) + setchar(n,multiple[i]) 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 = copynode(start) -- ignore components - resetinjection(n) - setchar(n,m) - insertnodeafter(head,start,n) - start = n + end + if what ~= true 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. + 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 @@ -1085,7 +1124,7 @@ 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 @@ -1152,7 +1191,7 @@ 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) @@ -1900,7 +1939,7 @@ 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 |