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| author | Hans Hagen <pragma@wxs.nl> | 2018-02-09 01:00:38 +0100 |
|---|---|---|
| committer | Context Git Mirror Bot <phg42.2a@gmail.com> | 2018-02-09 01:00:38 +0100 |
| commit | f4c9d2d305f1214a144fcb23a66964761583234a (patch) | |
| tree | e296f0ac0541d75729af1272346f30506405a6a4 /tex/context/base/mkiv/math-noa.lua | |
| parent | 1687077b0a63417ad4dce58f6c869a6e115d9b72 (diff) | |
| download | context-f4c9d2d305f1214a144fcb23a66964761583234a.tar.gz | |
2018-02-09 00:12:00
Diffstat (limited to 'tex/context/base/mkiv/math-noa.lua')
| -rw-r--r-- | tex/context/base/mkiv/math-noa.lua | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/tex/context/base/mkiv/math-noa.lua b/tex/context/base/mkiv/math-noa.lua index f20712b31..a00c94a52 100644 --- a/tex/context/base/mkiv/math-noa.lua +++ b/tex/context/base/mkiv/math-noa.lua @@ -1175,6 +1175,7 @@ do alternates = alternates, registered = registered, presets = { }, + resets = { }, hashes = setmetatableindex("table") } resources.mathalternates = mathalternates @@ -1239,7 +1240,7 @@ do local fontdata = fonts.hashes.identifiers local fontresources = fonts.hashes.resources - local function getalternate(fam,tag) + local function getalternate(fam,tag,current) local resources = fontresources[font_of_family(fam)] local attribute = unsetvalue if resources then @@ -1247,25 +1248,37 @@ do if mathalternates then local presets = mathalternates.presets if presets then + local resets = mathalternates.resets attribute = presets[tag] if not attribute then attribute = 0 local alternates = mathalternates.alternates for s in gmatch(tag,"[^, ]+") do - local a = alternates[s] -- or known[s] - if a then - attribute = attribute + a + if s == v_reset then + resets[tag] = true + current = unsetvalue + else + local a = alternates[s] -- or known[s] + if a then + attribute = bor(attribute,a) + end end end if attribute == 0 then attribute = unsetvalue end presets[tag] = attribute + elseif resets[tag] then + current = unsetvalue end end end end - return attribute + if attribute > 0 and current and current > 0 then + return bor(current,attribute) + else + return attribute + end end local function presetalternate(fam,tag) @@ -1280,10 +1293,7 @@ do local function setalternate(fam,tag) local a = texgetattribute(a_mathalternate) - local v = getalternate(fam,tag) - if a and a > 0 then - v = a + v - end + local v = getalternate(fam,tag,a) texsetattribute(a_mathalternate,v) end |