diff options
Diffstat (limited to 'src/fontloader/misc/fontloader-font-ots.lua')
| -rw-r--r-- | src/fontloader/misc/fontloader-font-ots.lua | 50 |
1 files changed, 38 insertions, 12 deletions
diff --git a/src/fontloader/misc/fontloader-font-ots.lua b/src/fontloader/misc/fontloader-font-ots.lua index 6911872..90fcde2 100644 --- a/src/fontloader/misc/fontloader-font-ots.lua +++ b/src/fontloader/misc/fontloader-font-ots.lua @@ -9,6 +9,9 @@ if not modules then modules = { } end modules ['font-ots'] = { -- sequences -- to be checked: discrun doesn't seem to do something useful now (except run the -- check again) so if we need it again we'll do a zwnjrun or so +-- components will go away and be replaced by a property table which simplifies +-- code (also more efficient) + -- beware, on my development machine we test a slightly a more optimized version -- assumptions: @@ -566,7 +569,22 @@ local function toligature(head,start,stop,char,dataset,sequence,markflag,discfou local pre, post, replace, pretail, posttail, replacetail = getdisc(discfound,true) if not replace then -- todo: signal simple hyphen local prev = getprev(base) - local copied = copy_node_list(comp) +-- local copied = copy_node_list(comp) +local current = comp +local previous = nil +local copied = nil +while current do + if getid(current) == glyph_code then + local n = copy_node(current) + if copied then + setlink(previous,n) + else + copied = n + end + previous = n + end + current = getnext(current) +end setprev(discnext,nil) -- also blocks funny assignments setnext(discprev,nil) -- also blocks funny assignments if pre then @@ -2126,7 +2144,7 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) else local discfound = nil local n = f + 1 - last = getnext(last) + last = getnext(last) -- the second in current (first already matched) while n <= l do if not last and (sweeptype == "post" or sweeptype == "replace") then last = getnext(sweepnode) @@ -2167,7 +2185,6 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) end break end - last = getnext(last) elseif char == false then if discfound then notmatchreplace[discfound] = true @@ -2220,6 +2237,7 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) end match = not notmatchpre[last] end + -- maybe only if match last = getnext(last) else match = false @@ -2255,8 +2273,12 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) if trace_skips then show_skip(dataset,sequence,char,ck,class) end + prev = getprev(prev) -- moved here elseif seq[n][char] then - n = n -1 + if n > 1 then -- new test + prev = getprev(prev) -- moved here + end + n = n - 1 else if discfound then notmatchreplace[discfound] = true @@ -2275,7 +2297,7 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) end break end - prev = getprev(prev) + -- prev = getprev(prev) -- moved up elseif char == false then if discfound then notmatchreplace[discfound] = true @@ -2339,21 +2361,20 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) if not match then break end - else - -- skip 'm end - else - -- skip 'm end + -- maybe only if match + prev = getprev(prev) elseif seq[n][32] then n = n - 1 + prev = getprev(prev) else match = false break end - prev = getprev(prev) elseif seq[n][32] then -- somewhat special, as zapfino can have many preceding spaces n = n - 1 + prev = getprev(prev) -- was absent else match = false break @@ -2391,7 +2412,11 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) if trace_skips then show_skip(dataset,sequence,char,ck,class) end + current = getnext(current) -- was absent elseif seq[n][char] then + if n < s then -- new test + current = getnext(current) -- was absent + end n = n + 1 else if discfound then @@ -2467,16 +2492,17 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode) else -- skip 'm end + -- maybe only if match + current = getnext(current) elseif seq[n][32] then -- brrr n = n + 1 else match = false break end - current = getnext(current) elseif seq[n][32] then n = n + 1 -current = getnext(current) + current = getnext(current) else match = false break |