diff options
Diffstat (limited to 'src/luaotfload-letterspace.lua')
| -rw-r--r-- | src/luaotfload-letterspace.lua | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/src/luaotfload-letterspace.lua b/src/luaotfload-letterspace.lua index 0d6b8e8..e4776c3 100644 --- a/src/luaotfload-letterspace.lua +++ b/src/luaotfload-letterspace.lua @@ -40,6 +40,16 @@ local setnext = nodedirect.setnext or field_setter "next" local getprev = nodedirect.getprev or field_getter "prev" local setprev = nodedirect.setprev or field_setter "prev" +--- since r5336 +local getboth = nodedirect.getboth or function (n) + return getprev (n), getnext (n) +end + +local setlink = nodedirect.setlink or function (a, b) + setnext (a, b) + setprev (b, a) +end + local getdisc = nodedirect.getdisc or field_getter "disc" local setdisc = nodedirect.setdisc or field_setter "disc" @@ -325,27 +335,26 @@ kerncharacters = function (head) if c then if keepligature and keepligature(start) then -- keep 'm + c = nil else - --- c = kerncharacters (c) --> taken care of after replacing - local s = start - local p = getprev(s) - local n = getnext(s) - local tail = find_node_tail(c) - if p then - setnext(p, c) - p = getprev(c) - else - head = c - end - if n then - tail = getprev(n) + while c do + local s = start + local p, n = getboth (s) + if p then + setlink (p, c) + else + head = c + end + if n then + local tail = find_node_tail(c) + setlink (tail, n) + end + start = c + setfield(s, "components", nil) + free_node(s) + done = true + c = getfield (start, "components") end - setnext(tail, n) - start = c - setfield(s, "components", nil) - -- we now leak nodes ! - -- free_node(s) - done = true end end -- kern ligature |