diff options
Diffstat (limited to 'tex/context/base/mkiv/font-ctx.lua')
| -rw-r--r-- | tex/context/base/mkiv/font-ctx.lua | 69 |
1 files changed, 58 insertions, 11 deletions
diff --git a/tex/context/base/mkiv/font-ctx.lua b/tex/context/base/mkiv/font-ctx.lua index 02cf6093c..0a492b119 100644 --- a/tex/context/base/mkiv/font-ctx.lua +++ b/tex/context/base/mkiv/font-ctx.lua @@ -179,7 +179,7 @@ do local hashes = { } local nofinstances = 0 - local instances = table.setmetatableindex(function(t,k) + local instances = setmetatableindex(function(t,k) nofinstances = nofinstances + 1 t[k] = nofinstances return nofinstances @@ -570,6 +570,21 @@ end -- \definefontfeature[demo][a={b,c}] -- \definefontfeature[demo][a={b=12,c={34,35}}] +local h = setmetatableindex(function(t,k) + local v = "," .. k .. "," + t[k] = v + return v +end) + +-- local function removefromhash(hash,key) +-- local pattern = h[key] +-- for k in next, hash do +-- if k ~= key and find(h[k],pattern) then -- if find(k,",") and ... +-- hash[k] = nil +-- end +-- end +-- end + local function presetcontext(name,parent,features) -- will go to con and shared if features == "" and find(parent,"=",1,true) then features = parent @@ -635,14 +650,23 @@ local function presetcontext(name,parent,features) -- will go to con and shared -- if v then t[k] = v end t[k] = v end - -- needed for dynamic features - -- maybe number should always be renewed as we can redefine features - local number = setups[name] and setups[name].number or 0 -- hm, numbers[name] + -- the number is needed for dynamic features; maybe number should always be + -- renewed as we can redefine features ... i need a test + local number = setups[name] and setups[name].number or 0 if number == 0 then number = #numbers + 1 numbers[number] = name end + -- t.number = number + -- there is the special case of combined features as we have in math but maybe + -- this has to change some day ... otherwise we mess up dynamics (ok, we could + -- impose a limit there: no combined features) + -- + -- done elsewhere (!) + -- + -- removefromhash(setups,name) -- can have changed (like foo,extramath) + -- setups[name] = t return number, t end @@ -913,14 +937,37 @@ end -- return fastcopy(setups[features] or (presetcontext(features,"","") and setups[features])) -- end +-- local function splitcontext(features) -- presetcontext creates dummy here +-- local sf = setups[features] +-- if not sf then +-- local n -- number +-- if find(features,",") then +-- -- let's assume a combination which is not yet defined but just specified (as in math) +-- n, sf = presetcontext(features,features,"") +-- else +-- -- we've run into an unknown feature and or a direct spec so we create a dummy +-- n, sf = presetcontext(features,"","") +-- end +-- end +-- return fastcopy(sf) +-- end + local function splitcontext(features) -- presetcontext creates dummy here - local sf = setups[features] - if not sf then - local n -- number - if find(features,",",a,true) then - -- let's assume a combination which is not yet defined but just specified (as in math) - n, sf = presetcontext(features,features,"") - else + local n, sf + if find(features,",") then + -- + -- from elsewhere (!) + -- + -- this will become: + -- + -- if find(features,"^reset," then + setups[features] = nil + -- end + -- let's assume a combination which is not yet defined but just specified (as in math) + n, sf = presetcontext(features,features,"") + else + sf = setups[features] + if not sf then -- we've run into an unknown feature and or a direct spec so we create a dummy n, sf = presetcontext(features,"","") end |