if not modules then modules = { } end modules ['char-tex'] = {
version = 1.001,
comment = "companion to char-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local lpeg = lpeg
local tonumber, next, type = tonumber, next, type
local format, find, gmatch, match = string.format, string.find, string.gmatch, string.match
local utfchar, utfbyte = utf.char, utf.byte
local concat, tohash = table.concat, table.tohash
local P, C, R, S, V, Cs, Cc = lpeg.P, lpeg.C, lpeg.R, lpeg.S, lpeg.V, lpeg.Cs, lpeg.Cc
local lpegpatterns = lpeg.patterns
local lpegmatch = lpeg.match
local utfchartabletopattern = lpeg.utfchartabletopattern
local allocate = utilities.storage.allocate
local mark = utilities.storage.mark
local context = context
local commands = commands
local characters = characters
local texcharacters = { }
characters.tex = texcharacters
local utffilters = characters.filters.utf
local is_character = characters.is_character
local is_letter = characters.is_letter
local is_command = characters.is_command
local is_spacing = characters.is_spacing
local is_mark = characters.is_mark
local is_punctuation = characters.is_punctuation
local data = characters.data if not data then return end
local blocks = characters.blocks
local trace_defining = false trackers.register("characters.defining", function(v) characters_defining = v end)
local report_defining = logs.reporter("characters")
--[[ldx--
<p>In order to deal with 8-bit output, we need to find a way to go from <l n='utf'/> to
8-bit. This is handled in the <l n='luatex'/> engine itself.</p>
<p>This leaves us problems with characters that are specific to <l n='tex'/> like
<type>{}</type>, <type>$</type> and alike. We can remap some chars that tex input files
are sensitive for to a private area (while writing to a utility file) and revert then
to their original slot when we read in such a file. Instead of reverting, we can (when
we resolve characters to glyphs) map them to their right glyph there. For this purpose
we can use the private planes 0x0F0000 and 0x100000.</p>
--ldx]]--
local low = allocate()
local high = allocate()
local escapes = allocate()
local special = "~#$%^&_{}\\|" -- "~#$%{}\\|"
local private = {
low = low,
high = high,
escapes = escapes,
}
utffilters.private = private
for ch in gmatch(special,".") do
local cb
if type(ch) == "number" then
cb, ch = ch, utfchar(ch)
else
cb = utfbyte(ch)
end
if cb < 256 then
escapes[ch] = "\\" .. ch
low[ch] = utfchar(0x0F0000 + cb)
if ch == "%" then
ch = "%%" -- nasty, but we need this as in replacements (also in lpeg) % is interpreted
end
high[utfchar(0x0F0000 + cb)] = ch
end
end
local tohigh = lpeg.replacer(low) -- frozen, only for basic tex
local tolow = lpeg.replacer(high) -- frozen, only for basic tex
lpegpatterns.utftohigh = tohigh
lpegpatterns.utftolow = tolow
function utffilters.harden(str)
return lpegmatch(tohigh,str)
end
function utffilters.soften(str)
return lpegmatch(tolow,str)
end
private.escape = utf.remapper(escapes) -- maybe: ,"dynamic"
private.replace = utf.remapper(low) -- maybe: ,"dynamic"
private.revert = utf.remapper(high) -- maybe: ,"dynamic"
--[[ldx--
<p>We get a more efficient variant of this when we integrate
replacements in collapser. This more or less renders the previous
private code redundant. The following code is equivalent but the
first snippet uses the relocated dollars.</p>
<typing>
[x] [$x$]
</typing>
--ldx]]--
-- using the tree-lpeg-mapper would be nice but we also need to deal with end-of-string
-- cases: "\"\i" and don't want "\relax" to be seen as \r e lax" (for which we need to mess
-- with spaces
local accentmapping = allocate {
['"'] = { [""] = "¨",
A = "Ä", a = "ä",
E = "Ë", e = "ë",
I = "Ï", i = "ï", ["ı"] = "ï", ["\\i"] = "ï",
O = "Ö", o = "ö",
U = "Ü", u = "ü",
Y = "Ÿ", y = "ÿ",
},
["'"] = { [""] = "´",
A = "Á", a = "á",
C = "Ć", c = "ć",
E = "É", e = "é",
I = "Í", i = "í", ["ı"] = "í", ["\\i"] = "í",
L = "Ĺ", l = "ĺ",
N = "Ń", n = "ń",
O = "Ó", o = "ó",
R = "Ŕ", r = "ŕ",
S = "Ś", s = "ś",
U = "Ú", u = "ú",
Y = "Ý", y = "ý",
Z = "Ź", z = "ź",
},
["."] = { [""] = "˙",
C = "Ċ", c = "ċ",
E = "Ė", e = "ė",
G = "Ġ", g = "ġ",
I = "İ", i = "i", ["ı"] = "i", ["\\i"] = "i",
Z = "Ż", z = "ż",
},
["="] = { [""] = "¯",
A = "Ā", a = "ā",
E = "Ē", e = "ē",
I = "Ī", i = "ī", ["ı"] = "ī", ["\\i"] = "ī",
O = "Ō", o = "ō",
U = "Ū", u = "ū",
},
["H"] = { [""] = "˝",
O = "Ő", o = "ő",
U = "Ű", u = "ű",
},
["^"] = { [""] = "ˆ",
A = "Â", a = "â",
C = "Ĉ", c = "ĉ",
E = "Ê", e = "ê",
G = "Ĝ", g = "ĝ",
H = "Ĥ", h = "ĥ",
I = "Î", i = "î", ["ı"] = "î", ["\\i"] = "î",
J = "Ĵ", j = "ĵ",
O = "Ô", o = "ô",
S = "Ŝ", s = "ŝ",
U = "Û", u = "û",
W = "Ŵ", w = "ŵ",
Y = "Ŷ", y = "ŷ",
},
["`"] = { [""] = "`",
A = "À", a = "à",
E = "È", e = "è",
I = "Ì", i = "ì", ["ı"] = "ì", ["\\i"] = "ì",
O = "Ò", o = "ò",
U = "Ù", u = "ù",
Y = "Ỳ", y = "ỳ",
},
["c"] = { [""] = "¸",
C = "Ç", c = "ç",
K = "Ķ", k = "ķ",
L = "Ļ", l = "ļ",
N = "Ņ", n = "ņ",
R = "Ŗ", r = "ŗ",
S = "Ş", s = "ş",
T = "Ţ", t = "ţ",
},
["k"] = { [""] = "˛",
A = "Ą", a = "ą",
E = "Ę", e = "ę",
I = "Į", i = "į",
U = "Ų", u = "ų",
},
["r"] = { [""] = "˚",
A = "Å", a = "å",
U = "Ů", u = "ů",
},
["u"] = { [""] = "˘",
A = "Ă", a = "ă",
E = "Ĕ", e = "ĕ",
G = "Ğ", g = "ğ",
I = "Ĭ", i = "ĭ", ["ı"] = "ĭ", ["\\i"] = "ĭ",
O = "Ŏ", o = "ŏ",
U = "Ŭ", u = "ŭ",
},
["v"] = { [""] = "ˇ",
C = "Č", c = "č",
D = "Ď", d = "ď",
E = "Ě", e = "ě",
L = "Ľ", l = "ľ",
N = "Ň", n = "ň",
R = "Ř", r = "ř",
S = "Š", s = "š",
T = "Ť", t = "ť",
Z = "Ž", z = "ž",
},
["~"] = { [""] = "˜",
A = "Ã", a = "ã",
I = "Ĩ", i = "ĩ", ["ı"] = "ĩ", ["\\i"] = "ĩ",
N = "Ñ", n = "ñ",
O = "Õ", o = "õ",
U = "Ũ", u = "ũ",
},
}
texcharacters.accentmapping = accentmapping
local accent_map = allocate { -- incomplete
['~'] = "̃" , -- ̃ Ẽ
['"'] = "̈" , -- ̈ Ë
["`"] = "̀" , -- ̀ È
["'"] = "́" , -- ́ É
["^"] = "̂" , -- ̂ Ê
-- ̄ Ē
-- ̆ Ĕ
-- ̇ Ė
-- ̉ Ẻ
-- ̌ Ě
-- ̏ Ȅ
-- ̑ Ȇ
-- ̣ Ẹ
-- ̧ Ȩ
-- ̨ Ę
-- ̭ Ḙ
-- ̰ Ḛ
}
-- local accents = concat(table.keys(accentmapping)) -- was _map
local function remap_accent(a,c,braced)
local m = accentmapping[a]
if m then
local n = m[c]
if n then
return n
end
end
-- local m = accent_map[a]
-- if m then
-- return c .. m
-- elseif braced then -- or #c > 0
if braced then -- or #c > 0
return "\\" .. a .. "{" .. c .. "}"
else
return "\\" .. a .. " " .. c
end
end
local commandmapping = allocate {
["aa"] = "å", ["AA"] = "Å",
["ae"] = "æ", ["AE"] = "Æ",
["cc"] = "ç", ["CC"] = "Ç",
["i"] = "ı", ["j"] = "ȷ",
["ij"] = "ij", ["IJ"] = "IJ",
["l"] = "ł", ["L"] = "Ł",
["o"] = "ø", ["O"] = "Ø",
["oe"] = "œ", ["OE"] = "Œ",
["sz"] = "ß", ["SZ"] = "SZ", ["ss"] = "ß", ["SS"] = "ß", -- uppercase: ẞ
}
texcharacters.commandmapping = commandmapping
local ligaturemapping = allocate {
["''"] = "”",
["``"] = "“",
["--"] = "–",
["---"] = "—",
}
-- local achar = R("az","AZ") + P("ı") + P("\\i")
--
-- local spaces = P(" ")^0
-- local no_l = P("{") / ""
-- local no_r = P("}") / ""
-- local no_b = P('\\') / ""
--
-- local lUr = P("{") * C(achar) * P("}")
--
-- local accents_1 = [["'.=^`~]]
-- local accents_2 = [[Hckruv]]
--
-- local accent = P('\\') * (
-- C(S(accents_1)) * (lUr * Cc(true) + C(achar) * Cc(false)) + -- we need achar for ı etc, could be sped up
-- C(S(accents_2)) * lUr * Cc(true)
-- ) / remap_accent
--
-- local csname = P('\\') * C(R("az","AZ")^1)
--
-- local command = (
-- csname +
-- P("{") * csname * spaces * P("}")
-- ) / commandmapping -- remap_commands
--
-- local both_1 = Cs { "run",
-- accent = accent,
-- command = command,
-- run = (V("accent") + no_l * V("accent") * no_r + V("command") + P(1))^0,
-- }
--
-- local both_2 = Cs { "run",
-- accent = accent,
-- command = command,
-- run = (V("accent") + V("command") + no_l * ( V("accent") + V("command") ) * no_r + P(1))^0,
-- }
--
-- function texcharacters.toutf(str,strip)
-- if not find(str,"\\",1,true) then
-- return str
-- elseif strip then
-- return lpegmatch(both_1,str)
-- else
-- return lpegmatch(both_2,str)
-- end
-- end
local untex
local function toutfpattern()
if not untex then
local hash = { }
for k, v in next, accentmapping do
for kk, vv in next, v do
if (k >= "a" and k <= "z") or (k >= "A" and k <= "Z") then
hash[ "\\"..k.." "..kk ] = vv
hash["{\\"..k.." "..kk.."}"] = vv
else
hash["\\" ..k ..kk ] = vv
hash["{\\"..k ..kk.."}"] = vv
end
hash["\\" ..k.."{"..kk.."}" ] = vv
hash["{\\"..k.."{"..kk.."}}"] = vv
end
end
for k, v in next, commandmapping do
hash["\\"..k.." "] = v
hash["{\\"..k.."}"] = v
hash["{\\"..k.." }"] = v
end
for k, v in next, ligaturemapping do
hash[k] = v
end
untex = utfchartabletopattern(hash) / hash
end
return untex
end
texcharacters.toutfpattern = toutfpattern
local pattern = nil
local function prepare()
pattern = Cs((toutfpattern() + P(1))^0)
return pattern
end
function texcharacters.toutf(str,strip)
if str == "" then
return str
elseif not find(str,"\\",1,true) then
return str
-- elseif strip then
else
return lpegmatch(pattern or prepare(),str)
end
end
-- print(texcharacters.toutf([[\~{Z}]],true))
-- print(texcharacters.toutf([[\'\i]],true))
-- print(texcharacters.toutf([[\'{\i}]],true))
-- print(texcharacters.toutf([[\"{e}]],true))
-- print(texcharacters.toutf([[\" {e}]],true))
-- print(texcharacters.toutf([[{\"{e}}]],true))
-- print(texcharacters.toutf([[{\" {e}}]],true))
-- print(texcharacters.toutf([[{\l}]],true))
-- print(texcharacters.toutf([[{\l }]],true))
-- print(texcharacters.toutf([[\v{r}]],true))
-- print(texcharacters.toutf([[fo{\"o}{\ss}ar]],true))
-- print(texcharacters.toutf([[H{\'a}n Th\^e\llap{\raise 0.5ex\hbox{\'{\relax}}} Th{\'a}nh]],true))
function texcharacters.safechar(n) -- was characters.safechar
local c = data[n]
if c and c.contextname then
return "\\" .. c.contextname
else
return utfchar(n)
end
end
if not context or not commands then
-- used in e.g. mtx-bibtex
return
end
-- all kind of initializations
if not interfaces then return end
local implement = interfaces.implement
local tex = tex
local texsetlccode = tex.setlccode
local texsetsfcode = tex.setsfcode
local texsetcatcode = tex.setcatcode
local contextsprint = context.sprint
local ctxcatcodes = catcodes.numbers.ctxcatcodes
local texsetmacro = tokens.setters.macro
local texsetchar = tokens.setters.char
function texcharacters.defineaccents()
local ctx_dodefineaccentcommand = context.dodefineaccentcommand
local ctx_dodefineaccent = context.dodefineaccent
local ctx_dodefinecommand = context.dodefinecommand
for accent, group in next, accentmapping do
ctx_dodefineaccentcommand(accent)
for character, mapping in next, group do
ctx_dodefineaccent(accent,character,mapping)
end
end
for command, mapping in next, commandmapping do
ctx_dodefinecommand(command,mapping)
end
end
implement { -- a waste of scanner but consistent
name = "defineaccents",
actions = texcharacters.defineaccents
}
--[[ldx--
<p>Instead of using a <l n='tex'/> file to define the named glyphs, we
use the table. After all, we have this information available anyway.</p>
--ldx]]--
function commands.makeactive(n,name) -- not used
contextsprint(ctxcatcodes,format("\\catcode%s=13\\unexpanded\\def %s{\\%s}",n,utfchar(n),name))
-- context("\\catcode%s=13\\unexpanded\\def %s{\\%s}",n,utfchar(n),name)
end
local function to_number(s)
local n = tonumber(s)
if n then
return n
end
return tonumber(match(s,'^"(.*)$'),16) or 0
end
implement {
name = "utfchar",
actions = { to_number, utfchar, contextsprint },
arguments = "string"
}
implement {
name = "safechar",
actions = { to_number, texcharacters.safechar, contextsprint },
arguments = "string"
}
implement {
name = "uchar",
arguments = { "integer", "integer" },
actions = function(h,l)
context(utfchar(h*256+l))
end
}
tex.uprint = commands.utfchar
-- in contect we don't use lc and uc codes (in fact in luatex we should have a hf code)
-- so at some point we might drop this
-- The following get set at the TeX end:
local forbidden = tohash {
0x000A0, -- zs nobreakspace <self>
0x000AD, -- cf softhyphen <self>
-- 0x00600, -- cf arabicnumber <self>
-- 0x00601, -- cf arabicsanah <self>
-- 0x00602, -- cf arabicfootnotemarker <self>
-- 0x00603, -- cf arabicsafha <self>
-- 0x00604, -- cf arabicsamvat <self>
-- 0x00605, -- cf arabicnumberabove <self>
-- 0x0061C, -- cf arabiclettermark <self>
-- 0x006DD, -- cf arabicendofayah <self>
-- 0x008E2, -- cf arabicdisputedendofayah <self>
0x02000, -- zs enquad <self>
0x02001, -- zs emquad <self>
0x02002, -- zs enspace \kern .5\emwidth
0x02003, -- zs emspace \hskip \emwidth
0x02004, -- zs threeperemspace <self>
0x02005, -- zs fourperemspace <self>
0x02006, -- zs sixperemspace <self>
0x02007, -- zs figurespace <self>
0x02008, -- zs punctuationspace <self>
0x02009, -- zs breakablethinspace <self>
0x0200A, -- zs hairspace <self>
0x0200B, -- cf zerowidthspace <self>
0x0200C, -- cf zwnj <self>
0x0200D, -- cf zwj <self>
0x0202F, -- zs narrownobreakspace <self>
0x0205F, -- zs medspace \textormathspace +\medmuskip 2
-- 0x03000, -- zs ideographicspace <self>
-- 0x0FEFF, -- cf zerowidthnobreakspace \penalty \plustenthousand \kern \zeropoint
}
local csletters = characters.csletters -- also a signal that we have initialized
local activated = { }
local sfmode = "unset" -- unset, traditional, normal
local block_too = false
directives.register("characters.blockstoo",function(v) block_too = v end)
-- If this is something that is not documentwide and used a lot, then we
-- need a more clever approach (trivial but not now).
local function setuppersfcodes(v,n)
if sfstate ~= "unset" then
report_defining("setting uppercase sf codes to %a",n)
for u, chr in next, data do
if chr.category == "lu" then
texsetsfcode(u,n)
end
end
end
sfstate = v
end
directives.register("characters.spaceafteruppercase",function(v)
if v == "traditional" then
setuppersfcodes(v,999)
elseif v == "normal" then
setuppersfcodes(v,1000)
end
end)
if not csletters then
csletters = allocate()
characters.csletters = csletters
report_defining("setting up character related codes and commands")
if sfstate == "unset" then
sfstate = "traditional"
end
local traditional = sfstate == "traditional"
for u, chr in next, data do -- will move up
local fallback = chr.fallback
if fallback then
contextsprint("{\\catcode",u,"=13\\unexpanded\\gdef ",utfchar(u),"{\\checkedchar{",u,"}{",fallback,"}}}")
activated[#activated+1] = u
else
local contextname = chr.contextname
local category = chr.category
local isletter = is_letter[category]
if contextname then
if is_character[category] then
if chr.unicodeslot < 128 then
if isletter then
local c = utfchar(u)
texsetmacro(contextname,c)
csletters[c] = u
else
texsetchar(contextname,u)
end
else
local c = utfchar(u)
texsetmacro(contextname,c)
if isletter and u >= 32 and u <= 65536 then
csletters[c] = u
end
end
--
if isletter then
local lc = chr.lccode
local uc = chr.uccode
if not lc then
chr.lccode = u
lc = u
elseif type(lc) == "table" then
lc = u
end
if not uc then
chr.uccode = u
uc = u
elseif type(uc) == "table" then
uc = u
end
texsetlccode(u,lc,uc)
if traditional and category == "lu" then
texsetsfcode(code,999)
end
end
--
elseif is_command[category] and not forbidden[u] then
-- contextsprint("{\\catcode",u,"=13\\unexpanded\\gdef ",utfchar(u),"{\\",contextname,"}}")
-- activated[#activated+1] = u
local c = utfchar(u)
texsetmacro(contextname,c)
elseif is_mark[category] then
texsetlccode(u,u,u) -- for hyphenation
end
-- elseif isletter and u >= 32 and u <= 65536 then
elseif isletter then
csletters[utfchar(u)] = u
--
local lc, uc = chr.lccode, chr.uccode
if not lc then
chr.lccode = u
lc = u
elseif type(lc) == "table" then
lc = u
end
if not uc then
chr.uccode = u
uc = u
elseif type(uc) == "table" then
uc = u
end
texsetlccode(u,lc,uc)
if traditional and category == "lu" then
texsetsfcode(code,999)
end
--
elseif is_mark[category] then
--
texsetlccode(u,u,u) -- for hyphenation
--
end
end
end
if blocks_too then
-- this slows down format generation by over 10 percent
for k, v in next, blocks do
if v.catcode == "letter" then
local first = v.first
local last = v.last
local gaps = v.gaps
if first and last then
for u=first,last do
csletters[utfchar(u)] = u
--
-- texsetlccode(u,u,u) -- self self
--
end
end
if gaps then
for i=1,#gaps do
local u = gaps[i]
csletters[utfchar(u)] = u
--
-- texsetlccode(u,u,u) -- self self
--
end
end
end
end
end
if storage then
storage.register("characters/csletters", csletters, "characters.csletters")
end
else
mark(csletters)
end
lpegpatterns.csletter = utfchartabletopattern(csletters)
-- todo: get rid of activated
-- todo: move first loop out ,merge with above
function characters.setlettercatcodes(cct)
if trace_defining then
report_defining("assigning letter catcodes to catcode table %a",cct)
end
local saved = tex.catcodetable
tex.catcodetable = cct
texsetcatcode(0x200C,11) -- non-joiner
texsetcatcode(0x200D,11) -- joiner
for c, u in next, csletters do
texsetcatcode(u,11)
end
-- for u, chr in next, data do
-- if not chr.fallback and is_letter[chr.category] and u >= 32 and u <= 65536 then
-- texsetcatcode(u,11)
-- end
-- local range = chr.range
-- if range then
-- for i=1,range.first,range.last do -- tricky as not all are letters
-- texsetcatcode(i,11)
-- end
-- end
-- end
-- for k, v in next, blocks do
-- if v.catcode == "letter" then
-- for u=v.first,v.last do
-- texsetcatcode(u,11)
-- end
-- end
-- end
tex.catcodetable = saved
end
function characters.setactivecatcodes(cct)
local saved = tex.catcodetable
tex.catcodetable = cct
for i=1,#activated do
local u = activated[i]
texsetcatcode(u,13)
if trace_defining then
report_defining("character %U (%s) is active in set %a",u,data[u].description,cct)
end
end
tex.catcodetable = saved
end
--[[ldx--
<p>Setting the lccodes is also done in a loop over the data table.</p>
--ldx]]--
-- function characters.setcodes() -- we could loop over csletters
-- if trace_defining then
-- report_defining("defining lc and uc codes")
-- end
-- local traditional = sfstate == "traditional" or sfstate == "unset"
-- for code, chr in next, data do
-- local cc = chr.category
-- if is_letter[cc] then
-- local range = chr.range
-- if range then
-- for i=range.first,range.last do
-- texsetlccode(i,i,i) -- self self
-- end
-- else
-- local lc, uc = chr.lccode, chr.uccode
-- if not lc then
-- chr.lccode, lc = code, code
-- elseif type(lc) == "table" then
-- lc = code
-- end
-- if not uc then
-- chr.uccode, uc = code, code
-- elseif type(uc) == "table" then
-- uc = code
-- end
-- texsetlccode(code,lc,uc)
-- if traditional and cc == "lu" then
-- texsetsfcode(code,999)
-- end
-- end
-- elseif is_mark[cc] then
-- texsetlccode(code,code,code) -- for hyphenation
-- end
-- end
-- if traditional then
-- sfstate = "traditional"
-- end
-- end
-- tex
implement {
name = "chardescription",
arguments = "integer",
actions = function(slot)
local d = data[slot]
if d then
context(d.description)
end
end,
}
-- xml
characters.activeoffset = 0x10000 -- there will be remapped in that byte range
function commands.remapentity(chr,slot) -- not used
contextsprint(format("{\\catcode%s=13\\xdef%s{\\string%s}}",slot,utfchar(slot),chr))
end
-- xml.entities = xml.entities or { }
--
-- storage.register("xml/entities",xml.entities,"xml.entities") -- this will move to lxml
--
-- function characters.setmkiventities()
-- local entities = xml.entities
-- entities.lt = "<"
-- entities.amp = "&"
-- entities.gt = ">"
-- end
--
-- function characters.setmkiientities()
-- local entities = xml.entities
-- entities.lt = utfchar(characters.activeoffset + utfbyte("<"))
-- entities.amp = utfchar(characters.activeoffset + utfbyte("&"))
-- entities.gt = utfchar(characters.activeoffset + utfbyte(">"))
-- end
implement { name = "setlettercatcodes", scope = "private", actions = characters.setlettercatcodes, arguments = "integer" }
implement { name = "setactivecatcodes", scope = "private", actions = characters.setactivecatcodes, arguments = "integer" }
--------- { name = "setcharactercodes", scope = "private", actions = characters.setcodes }
-- experiment (some can move to char-ini.lua)
local function overload(c,u,code,codes)
local c = tonumber(c)
if not c then
return
end
local u = utilities.parsers.settings_to_array(u)
local n = #u
if n == 0 then
return
end
local t = nil
if n == 1 then
t = tonumber(u[1])
else
t = { }
for i=1,n do
t[#t+1] = tonumber(u[i])
end
end
if t then
data[c][code] = t
characters[codes][c] = nil
end
end
interfaces.implement {
name = "overloaduppercase",
arguments = "2 strings",
actions = function(c,u)
overload(c,u,"uccode","uccodes")
end
}
interfaces.implement {
name = "overloadlowercase",
arguments = "2 strings",
actions = function(c,u)
overload(c,u,"lccode","lccodes")
end
}
