beta 2013.05.18 12:41

3 files changed, 1191 insertions, 352 deletions

diff --git a/context/data/scite/lexers/archive/scite-context-lexer-pre-3-3-1.lua b/context/data/scite/lexers/archive/scite-context-lexer-pre-3-3-1.lua
new file mode 100644
index 000000000..7883177b4
--- /dev/null
+++ b/context/data/scite/lexers/archive/scite-context-lexer-pre-3-3-1.lua
@@ -0,0 +1,1100 @@
+local info = {
+    version   = 1.324,
+    comment   = "basics for scintilla lpeg lexer for context/metafun",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files",
+    comment   = "contains copyrighted code from mitchell.att.foicica.com",
+
+}
+
+-- todo: move all code here
+-- todo: explore adapted dll ... properties + init
+
+-- The fold and lex functions are copied and patched from original code by Mitchell (see
+-- lexer.lua). All errors are mine.
+--
+-- Starting with SciTE version 3.20 there is an issue with coloring. As we still lack
+-- a connection with scite itself (properties as well as printing to the log pane) we
+-- cannot trace this (on windows). As far as I can see, there are no fundamental
+-- changes in lexer.lua or LexLPeg.cxx so it must be in scintilla itself. So for the
+-- moment I stick to 3.10. Indicators are: no lexing of 'next' and 'goto <label>' in the
+-- Lua lexer and no brace highlighting either. Interesting is that it does work ok in
+-- the cld lexer (so the Lua code is okay). Also the fact that char-def.lua lexes fast
+-- is a signal that the lexer quits somewhere halfway.
+--
+-- After checking 3.24 and adapting to the new lexer tables things are okay again. So,
+-- this version assumes 3.24 or higher. In 3.24 we have a different token result, i.e. no
+-- longer a { tag, pattern } but just two return values. I didn't check other changes but
+-- will do that when I run into issues.
+--
+-- I've considered making a whole copy and patch the other functions too as we need
+-- an extra nesting model. However, I don't want to maintain too much. An unfortunate
+-- change in 3.03 is that no longer a script can be specified. This means that instead
+-- of loading the extensions via the properties file, we now need to load them in our
+-- own lexers, unless of course we replace lexer.lua completely (which adds another
+-- installation issue).
+--
+-- Another change has been that _LEXERHOME is no longer available. It looks like more and
+-- more functionality gets dropped so maybe at some point we need to ship our own dll/so
+-- files. For instance, I'd like to have access to the current filename and other scite
+-- properties. For instance, we could cache some info with each file, if only we had
+-- knowledge of what file we're dealing with.
+--
+-- For huge files folding can be pretty slow and I do have some large ones that I keep
+-- open all the time. Loading is normally no ussue, unless one has remembered the status
+-- and the cursor is at the last line of a 200K line file. Optimizing the fold function
+-- brought down loading of char-def.lua from 14 sec => 8 sec. Replacing the word_match
+-- function and optimizing the lex function gained another 2+ seconds. A 6 second load
+-- is quite ok for me. The changed lexer table structure (no subtables) brings loading
+-- down to a few seconds.
+--
+-- When the lexer path is copied to the textadept lexer path, and the theme definition to
+-- theme path (as lexer.lua), the lexer works there as well. When I have time and motive
+-- I will make a proper setup file to tune the look and feel a bit and associate suffixes
+-- with the context lexer. The textadept editor has a nice style tracing option but lacks
+-- the tabs for selecting files that scite has. It also has no integrated run that pipes
+-- to the log pane (I wonder if it could borrow code from the console2 project). Interesting
+-- is that the jit version of textadept crashes on lexing large files (and does not feel
+-- faster either).
+--
+-- Function load(lexer_name) starts with _M.WHITESPACE = lexer_name..'_whitespace' which
+-- means that we need to have it frozen at the moment we load another lexer. Because spacing
+-- is used to revert to a parent lexer we need to make sure that we load children as late
+-- as possible in order not to get the wrong whitespace trigger. This took me quite a while
+-- to figure out (not being that familiar with the internals). The lex and fold functions
+-- have been optimized. It is a pitty that there is no proper print available. Another thing
+-- needed is a default style in ourown theme style definition, as otherwise we get wrong
+-- nested lexers, especially if they are larger than a view. This is the hardest part of
+-- getting things right.
+--
+-- Eventually it might be safer to copy the other methods from lexer.lua here as well so
+-- that we have no dependencies, apart from the c library (for which at some point the api
+-- will be stable I hope).
+--
+-- It's a pitty that there is no scintillua library for the OSX version of scite. Even
+-- better would be to have the scintillua library as integral part of scite as that way I
+-- could use OSX alongside windows and linux (depending on needs). Also nice would be to
+-- have a proper interface to scite then because currently the lexer is rather isolated and the
+-- lua version does not provide all standard libraries. It would also be good to have lpeg
+-- support in the regular scite lua extension (currently you need to pick it up from someplace
+-- else).
+
+local lpeg = require 'lpeg'
+
+local R, P, S, C, V, Cp, Cs, Ct, Cmt, Cc, Cf, Cg, Carg = lpeg.R, lpeg.P, lpeg.S, lpeg.C, lpeg.V, lpeg.Cp, lpeg.Cs, lpeg.Ct, lpeg.Cmt, lpeg.Cc, lpeg.Cf, lpeg.Cg, lpeg.Carg
+local lpegmatch = lpeg.match
+local find, gmatch, match, lower, upper, gsub = string.find, string.gmatch, string.match, string.lower, string.upper, string.gsub
+local concat = table.concat
+local global = _G
+local type, next, setmetatable, rawset = type, next, setmetatable, rawset
+
+if lexer then
+    -- in recent c++ code the lexername and loading is hard coded
+elseif _LEXERHOME then
+    dofile(_LEXERHOME .. '/lexer.lua') -- pre 3.03 situation
+else
+    dofile('lexer.lua') -- whatever
+end
+
+lexer.context    = lexer.context or { }
+local context    = lexer.context
+
+context.patterns = context.patterns or { }
+local patterns   = context.patterns
+
+lexer._CONTEXTEXTENSIONS = true
+
+local locations = {
+ -- lexer.context.path,
+   "data", -- optional data directory
+   "..",   -- regular scite directory
+}
+
+local function collect(name)
+--  local definitions = loadfile(name .. ".luc") or loadfile(name .. ".lua")
+    local okay, definitions = pcall(function () return require(name) end)
+    if okay then
+        if type(definitions) == "function" then
+            definitions = definitions()
+        end
+        if type(definitions) == "table" then
+            return definitions
+        end
+    end
+end
+
+function context.loaddefinitions(name)
+    for i=1,#locations do
+        local data = collect(locations[i] .. "/" .. name)
+        if data then
+            return data
+        end
+    end
+end
+
+-- maybe more efficient:
+
+function context.word_match(words,word_chars,case_insensitive)
+    local chars = '%w_' -- maybe just "" when word_chars
+    if word_chars then
+        chars = '^([' .. chars .. gsub(word_chars,'([%^%]%-])', '%%%1') ..']+)'
+    else
+        chars = '^([' .. chars ..']+)'
+    end
+    if case_insensitive then
+        local word_list = { }
+        for i=1,#words do
+            word_list[lower(words[i])] = true
+        end
+        return P(function(input, index)
+            local s, e, word = find(input,chars,index)
+            return word and word_list[lower(word)] and e + 1 or nil
+        end)
+    else
+        local word_list = { }
+        for i=1,#words do
+            word_list[words[i]] = true
+        end
+        return P(function(input, index)
+            local s, e, word = find(input,chars,index)
+            return word and word_list[word] and e + 1 or nil
+        end)
+    end
+end
+
+local idtoken = R("az","AZ","\127\255","__")
+local digit   = R("09")
+local sign    = S("+-")
+local period  = P(".")
+local space   = S(" \n\r\t\f\v")
+
+patterns.idtoken  = idtoken
+
+patterns.digit    = digit
+patterns.sign     = sign
+patterns.period   = period
+
+patterns.cardinal = digit^1
+patterns.integer  = sign^-1 * digit^1
+
+patterns.real     =
+    sign^-1 * (                    -- at most one
+        digit^1 * period * digit^0 -- 10.0 10.
+      + digit^0 * period * digit^1 -- 0.10 .10
+      + digit^1                    -- 10
+   )
+
+patterns.restofline = (1-S("\n\r"))^1
+patterns.space      = space
+patterns.spacing    = space^1
+patterns.nospacing  = (1-space)^1
+patterns.anything   = P(1)
+
+local endof = S("\n\r\f")
+
+patterns.startofline = P(function(input,index)
+    return (index == 1 or lpegmatch(endof,input,index-1)) and index
+end)
+
+function context.exact_match(words,word_chars,case_insensitive)
+    local characters = concat(words)
+    local pattern -- the concat catches _ etc
+    if word_chars == true or word_chars == false or word_chars == nil then
+        word_chars = ""
+    end
+    if type(word_chars) == "string" then
+        pattern = S(characters) + idtoken
+        if case_insensitive then
+            pattern = pattern + S(upper(characters)) + S(lower(characters))
+        end
+        if word_chars ~= "" then
+            pattern = pattern + S(word_chars)
+        end
+    elseif word_chars then
+        pattern = word_chars
+    end
+    if case_insensitive then
+        local list = { }
+        for i=1,#words do
+            list[lower(words[i])] = true
+        end
+        return Cmt(pattern^1, function(_,i,s)
+            return list[lower(s)] -- and i or nil
+        end)
+    else
+        local list = { }
+        for i=1,#words do
+            list[words[i]] = true
+        end
+        return Cmt(pattern^1, function(_,i,s)
+            return list[s] -- and i or nil
+        end)
+    end
+end
+
+-- spell checking (we can only load lua files)
+--
+-- return {
+--     min = 3,
+--     max = 40,
+--     n = 12345,
+--     words = {
+--         ["someword"]    = "someword",
+--         ["anotherword"] = "Anotherword",
+--     },
+-- }
+
+local lists = { }
+
+function context.setwordlist(tag,limit) -- returns hash (lowercase keys and original values)
+    if not tag or tag == "" then
+        return false, 3
+    end
+    local list = lists[tag]
+    if not list then
+        list = context.loaddefinitions("spell-" .. tag)
+        if not list or type(list) ~= "table" then
+            list = { words = false, min = 3 }
+        else
+            list.words = list.words or false
+            list.min   = list.min or 3
+        end
+        lists[tag] = list
+    end
+    return list.words, list.min
+end
+
+patterns.wordtoken   = R("az","AZ","\127\255")
+patterns.wordpattern = patterns.wordtoken^3 -- todo: if limit and #s < limit then
+
+-- -- pre 3.24:
+--
+-- function context.checkedword(validwords,validminimum,s,i) -- ,limit
+--     if not validwords then -- or #s < validminimum then
+--         return true, { "text", i } -- { "default", i }
+--     else
+--         -- keys are lower
+--         local word = validwords[s]
+--         if word == s then
+--             return true, { "okay", i } -- exact match
+--         elseif word then
+--             return true, { "warning", i } -- case issue
+--         else
+--             local word = validwords[lower(s)]
+--             if word == s then
+--                 return true, { "okay", i } -- exact match
+--             elseif word then
+--                 return true, { "warning", i } -- case issue
+--             elseif upper(s) == s then
+--                 return true, { "warning", i } -- probably a logo or acronym
+--             else
+--                 return true, { "error", i }
+--             end
+--         end
+--     end
+-- end
+
+function context.checkedword(validwords,validminimum,s,i) -- ,limit
+    if not validwords then -- or #s < validminimum then
+        return true, "text", i -- { "default", i }
+    else
+        -- keys are lower
+        local word = validwords[s]
+        if word == s then
+            return true, "okay", i -- exact match
+        elseif word then
+            return true, "warning", i -- case issue
+        else
+            local word = validwords[lower(s)]
+            if word == s then
+                return true, "okay", i -- exact match
+            elseif word then
+                return true, "warning", i -- case issue
+            elseif upper(s) == s then
+                return true, "warning", i -- probably a logo or acronym
+            else
+                return true, "error", i
+            end
+        end
+    end
+end
+
+function context.styleofword(validwords,validminimum,s) -- ,limit
+    if not validwords or #s < validminimum then
+        return "text"
+    else
+        -- keys are lower
+        local word = validwords[s]
+        if word == s then
+            return "okay" -- exact match
+        elseif word then
+            return "warning" -- case issue
+        else
+            local word = validwords[lower(s)]
+            if word == s then
+                return "okay" -- exact match
+            elseif word then
+                return "warning" -- case issue
+            elseif upper(s) == s then
+                return "warning" -- probably a logo or acronym
+            else
+                return "error"
+            end
+        end
+    end
+end
+
+-- overloaded functions
+
+local FOLD_BASE         = SC_FOLDLEVELBASE
+local FOLD_HEADER       = SC_FOLDLEVELHEADERFLAG
+local FOLD_BLANK        = SC_FOLDLEVELWHITEFLAG
+
+local get_style_at      = GetStyleAt
+local get_property      = GetProperty
+local get_indent_amount = GetIndentAmount
+
+local h_table, b_table, n_table = { }, { }, { }
+
+setmetatable(h_table, { __index = function(t,level) local v = { level, FOLD_HEADER } t[level] = v return v end })
+setmetatable(b_table, { __index = function(t,level) local v = { level, FOLD_BLANK  } t[level] = v return v end })
+setmetatable(n_table, { __index = function(t,level) local v = { level              } t[level] = v return v end })
+
+-- -- todo: move the local functions outside (see below) .. old variant < 3.24
+--
+-- local newline = P("\r\n") + S("\r\n")
+-- local p_yes   = Cp() * Cs((1-newline)^1) * newline^-1
+-- local p_nop   = newline
+--
+-- local function fold_by_parsing(text,start_pos,start_line,start_level,lexer)
+--     local foldsymbols = lexer._foldsymbols
+--     if not foldsymbols then
+--         return { }
+--     end
+--     local patterns = foldsymbols._patterns
+--     if not patterns then
+--         return { }
+--     end
+--     local nofpatterns = #patterns
+--     if nofpatterns == 0 then
+--         return { }
+--     end
+--     local folds = { }
+--     local line_num = start_line
+--     local prev_level = start_level
+--     local current_level = prev_level
+--     local validmatches = foldsymbols._validmatches
+--     if not validmatches then
+--         validmatches = { }
+--         for symbol, matches in next, foldsymbols do -- whatever = { start = 1, stop = -1 }
+--             if not find(symbol,"^_") then -- brrr
+--                 for s, _ in next, matches do
+--                     validmatches[s] = true
+--                 end
+--             end
+--         end
+--         foldsymbols._validmatches = validmatches
+--     end
+--     -- of course we could instead build a nice lpeg checker .. something for
+--     -- a rainy day with a stack of new cd's at hand
+--     local function action_y(pos,line)
+--         for i=1,nofpatterns do
+--             for s, m in gmatch(line,patterns[i]) do
+--                 if validmatches[m] then
+--                     local symbols = foldsymbols[get_style_at(start_pos + pos + s - 1)]
+--                     if symbols then
+--                         local action = symbols[m]
+--                         if action then
+--                             if type(action) == 'number' then -- we could store this in validmatches if there was only one symbol category
+--                                 current_level = current_level + action
+--                             else
+--                                 current_level = current_level + action(text,pos,line,s,m)
+--                             end
+--                             if current_level < FOLD_BASE then
+--                                 current_level = FOLD_BASE
+--                             end
+--                         end
+--                     end
+--                 end
+--             end
+--         end
+--         if current_level > prev_level then
+--             folds[line_num] = h_table[prev_level] -- { prev_level, FOLD_HEADER }
+--         else
+--             folds[line_num] = n_table[prev_level] -- { prev_level }
+--         end
+--         prev_level = current_level
+--         line_num = line_num + 1
+--     end
+--     local function action_n()
+--         folds[line_num] = b_table[prev_level] -- { prev_level, FOLD_BLANK }
+--         line_num = line_num + 1
+--     end
+--     if lexer._reset_parser then
+--         lexer._reset_parser()
+--     end
+--     local lpegpattern = (p_yes/action_y + p_nop/action_n)^0 -- not too efficient but indirect function calls are neither but
+--     lpegmatch(lpegpattern,text)                             -- keys are not pressed that fast ... large files are slow anyway
+--     return folds
+-- end
+
+-- The 3.24 variant; no longer subtable optimization is needed:
+
+local newline = P("\r\n") + S("\r\n")
+local p_yes   = Cp() * Cs((1-newline)^1) * newline^-1
+local p_nop   = newline
+
+local folders = { }
+
+local function fold_by_parsing(text,start_pos,start_line,start_level,lexer)
+    local folder = folders[lexer]
+    if not folder then
+        --
+        local pattern, folds, text, start_pos, line_num, prev_level, current_level
+        --
+        local fold_symbols = lexer._foldsymbols
+        local fold_pattern = lexer._foldpattern -- use lpeg instead (context extension)
+        --
+        if fold_pattern then
+            -- if no functions are found then we could have a faster one
+
+         -- fold_pattern = Cp() * C(fold_pattern) * Carg(1) / function(s,match,pos)
+         --     local symbols = fold_symbols[get_style_at(start_pos + pos + s - 1)]
+         --     local l = symbols and symbols[match]
+         --     if l then
+         --         local t = type(l)
+         --         if t == 'number' then
+         --             current_level = current_level + l
+         --         elseif t == 'function' then
+         --             current_level = current_level + l(text, pos, line, s, match)
+         --         end
+         --     end
+         -- end
+         -- fold_pattern = (fold_pattern + P(1))^0
+         -- local action_y = function(pos,line)
+         --     lpegmatch(fold_pattern,line,1,pos)
+         --     folds[line_num] = prev_level
+         --     if current_level > prev_level then
+         --         folds[line_num] = prev_level + FOLD_HEADER
+         --     end
+         --     if current_level < FOLD_BASE then
+         --         current_level = FOLD_BASE
+         --     end
+         --     prev_level = current_level
+         --     line_num = line_num + 1
+         -- end
+         -- local action_n = function()
+         --     folds[line_num] = prev_level + FOLD_BLANK
+         --     line_num = line_num + 1
+         -- end
+         -- pattern = (p_yes/action_y + p_nop/action_n)^0
+
+            fold_pattern = Cp() * C(fold_pattern) / function(s,match)
+                local symbols = fold_symbols[get_style_at(start_pos + s)]
+                if symbols then
+                    local l = symbols[match]
+                    if l then
+                        current_level = current_level + l
+                    end
+                end
+            end
+            local action_y = function()
+                folds[line_num] = prev_level
+                if current_level > prev_level then
+                    folds[line_num] = prev_level + FOLD_HEADER
+                end
+                if current_level < FOLD_BASE then
+                    current_level = FOLD_BASE
+                end
+                prev_level = current_level
+                line_num = line_num + 1
+            end
+            local action_n = function()
+                folds[line_num] = prev_level + FOLD_BLANK
+                line_num = line_num + 1
+            end
+            pattern = ((fold_pattern + (1-newline))^1 * newline / action_y + newline/action_n)^0
+
+         else
+            -- the traditional one but a bit optimized
+            local fold_symbols_patterns = fold_symbols._patterns
+            local action_y = function(pos,line)
+                for j = 1, #fold_symbols_patterns do
+                    for s, match in gmatch(line,fold_symbols_patterns[j]) do -- '()('..patterns[i]..')'
+                        local symbols = fold_symbols[get_style_at(start_pos + pos + s - 1)]
+                        local l = symbols and symbols[match]
+                        local t = type(l)
+                        if t == 'number' then
+                            current_level = current_level + l
+                        elseif t == 'function' then
+                            current_level = current_level + l(text, pos, line, s, match)
+                        end
+                    end
+                end
+                folds[line_num] = prev_level
+                if current_level > prev_level then
+                    folds[line_num] = prev_level + FOLD_HEADER
+                end
+                if current_level < FOLD_BASE then
+                    current_level = FOLD_BASE
+                end
+                prev_level = current_level
+                line_num = line_num + 1
+            end
+            local action_n = function()
+                folds[line_num] = prev_level + FOLD_BLANK
+                line_num = line_num + 1
+            end
+            pattern = (p_yes/action_y + p_nop/action_n)^0
+        end
+        --
+        local reset_parser = lexer._reset_parser
+        --
+        folder = function(_text_,_start_pos_,_start_line_,_start_level_)
+            if reset_parser then
+                reset_parser()
+            end
+            folds         = { }
+            text          = _text_
+            start_pos     = _start_pos_
+            line_num      = _start_line_
+            prev_level    = _start_level_
+            current_level = prev_level
+            lpegmatch(pattern,text)
+--             return folds
+local t = folds
+folds = nil
+return t -- so folds can be collected
+        end
+        folders[lexer] = folder
+    end
+    return folder(text,start_pos,start_line,start_level,lexer)
+end
+
+-- local function fold_by_indentation(text,start_pos,start_line,start_level)
+--     local folds = { }
+--     local current_line = start_line
+--     local prev_level = start_level
+--     for line in gmatch(text,'[\t ]*(.-)\r?\n') do
+--         if line ~= "" then
+--             local current_level = FOLD_BASE + get_indent_amount(current_line)
+--             if current_level > prev_level then -- next level
+--                 local i = current_line - 1
+--                 while true do
+--                     local f = folds[i]
+--                     if f and f[2] == FOLD_BLANK then
+--                         i = i - 1
+--                     else
+--                         break
+--                     end
+--                 end
+--                 local f = folds[i]
+--                 if f then
+--                     f[2] = FOLD_HEADER
+--                 end -- low indent
+--                 folds[current_line] = n_table[current_level] -- { current_level } -- high indent
+--             elseif current_level < prev_level then -- prev level
+--                 local f = folds[current_line - 1]
+--                 if f then
+--                     f[1] = prev_level -- high indent
+--                 end
+--                 folds[current_line] = n_table[current_level] -- { current_level } -- low indent
+--             else -- same level
+--                 folds[current_line] = n_table[prev_level] -- { prev_level }
+--             end
+--             prev_level = current_level
+--         else
+--             folds[current_line] = b_table[prev_level] -- { prev_level, FOLD_BLANK }
+--         end
+--         current_line = current_line + 1
+--     end
+--     return folds
+-- end
+
+-- local function fold_by_indentation(text,start_pos,start_line,start_level)
+--     local folds = { }
+--     local current_line = start_line
+--     local prev_level = start_level
+--     for line in gmatch(text,'[\t ]*(.-)\r?\n') do
+--         if line ~= '' then
+--             local current_level = FOLD_BASE + get_indent_amount(current_line)
+--             if current_level > prev_level then -- next level
+--                 local i = current_line - 1
+--                 local f
+--                 while true do
+--                     f = folds[i]
+--                     if not f then
+--                         break
+--                     elseif f[2] == FOLD_BLANK then
+--                         i = i - 1
+--                     else
+--                         f[2] = FOLD_HEADER -- low indent
+--                         break
+--                     end
+--                 end
+--                 folds[current_line] = { current_level } -- high indent
+--             elseif current_level < prev_level then -- prev level
+--                 local f = folds[current_line - 1]
+--                 if f then
+--                     f[1] = prev_level -- high indent
+--                 end
+--                 folds[current_line] = { current_level } -- low indent
+--             else -- same level
+--                 folds[current_line] = { prev_level }
+--             end
+--             prev_level = current_level
+--         else
+--             folds[current_line] = { prev_level, FOLD_BLANK }
+--         end
+--         current_line = current_line + 1
+--     end
+--     for line, level in next, folds do
+--         folds[line] = level[1] + (level[2] or 0)
+--     end
+--     return folds
+-- end
+
+local folds, current_line, prev_level
+
+local function action_y()
+    local current_level = FOLD_BASE + get_indent_amount(current_line)
+    if current_level > prev_level then -- next level
+        local i = current_line - 1
+        local f
+        while true do
+            f = folds[i]
+            if not f then
+                break
+            elseif f[2] == FOLD_BLANK then
+                i = i - 1
+            else
+                f[2] = FOLD_HEADER -- low indent
+                break
+            end
+        end
+        folds[current_line] = { current_level } -- high indent
+    elseif current_level < prev_level then -- prev level
+        local f = folds[current_line - 1]
+        if f then
+            f[1] = prev_level -- high indent
+        end
+        folds[current_line] = { current_level } -- low indent
+    else -- same level
+        folds[current_line] = { prev_level }
+    end
+    prev_level = current_level
+    current_line = current_line + 1
+end
+
+local function action_n()
+    folds[current_line] = { prev_level, FOLD_BLANK }
+    current_line = current_line + 1
+end
+
+local pattern = ( S("\t ")^0 * ( (1-S("\n\r"))^1 / action_y + P(true) / action_n) * newline )^0
+
+local function fold_by_indentation(text,start_pos,start_line,start_level)
+    -- initialize
+    folds        = { }
+    current_line = start_line
+    prev_level   = start_level
+    -- define
+    -- -- not here .. pattern binds and local functions are not frozen
+    -- analyze
+    lpegmatch(pattern,text)
+    -- flatten
+    for line, level in next, folds do
+        folds[line] = level[1] + (level[2] or 0)
+    end
+    -- done
+--     return folds
+local t = folds
+folds = nil
+return t -- so folds can be collected
+end
+
+local function fold_by_line(text,start_pos,start_line,start_level)
+    local folds = { }
+    -- can also be lpeg'd
+    for _ in gmatch(text,".-\r?\n") do
+        folds[start_line] = n_table[start_level] -- { start_level }
+        start_line = start_line + 1
+    end
+    return folds
+end
+
+local threshold_by_lexer       =  512 * 1024 -- we don't know the filesize yet
+local threshold_by_parsing     =  512 * 1024 -- we don't know the filesize yet
+local threshold_by_indentation =  512 * 1024 -- we don't know the filesize yet
+local threshold_by_line        =  512 * 1024 -- we don't know the filesize yet
+
+function context.fold(text,start_pos,start_line,start_level) -- hm, we had size thresholds .. where did they go
+    if text == '' then
+        return { }
+    end
+    local lexer = global._LEXER
+    local fold_by_lexer = lexer._fold
+    local fold_by_symbols = lexer._foldsymbols
+    local filesize = 0 -- we don't know that
+    if fold_by_lexer then
+        if filesize <= threshold_by_lexer then
+            return fold_by_lexer(text,start_pos,start_line,start_level,lexer)
+        end
+    elseif fold_by_symbols then -- and get_property('fold.by.parsing',1) > 0 then
+        if filesize <= threshold_by_parsing then
+            return fold_by_parsing(text,start_pos,start_line,start_level,lexer)
+        end
+    elseif get_property('fold.by.indentation',1) > 0 then
+        if filesize <= threshold_by_indentation then
+            return fold_by_indentation(text,start_pos,start_line,start_level,lexer)
+        end
+    elseif get_property('fold.by.line',1) > 0 then
+        if filesize <= threshold_by_line then
+            return fold_by_line(text,start_pos,start_line,start_level,lexer)
+        end
+    end
+    return { }
+end
+
+-- The following code is mostly unchanged:
+
+local function add_rule(lexer, id, rule)
+    if not lexer._RULES then
+        lexer._RULES = {}
+        lexer._RULEORDER = {}
+    end
+    lexer._RULES[id] = rule
+    lexer._RULEORDER[#lexer._RULEORDER + 1] = id
+end
+
+local function add_style(lexer, token_name, style)
+    local len = lexer._STYLES.len
+    if len == 32 then
+        len = len + 8
+    end
+    if len >= 128 then
+        print('Too many styles defined (128 MAX)')
+    end
+    lexer._TOKENS[token_name] = len
+    lexer._STYLES[len] = style
+    lexer._STYLES.len = len + 1
+end
+
+local function join_tokens(lexer)
+    local patterns, order = lexer._RULES, lexer._RULEORDER
+    local token_rule = patterns[order[1]]
+    for i=2,#order do
+        token_rule = token_rule + patterns[order[i]]
+    end
+    lexer._TOKENRULE = token_rule
+    return lexer._TOKENRULE
+end
+
+local function add_lexer(grammar, lexer, token_rule)
+    local token_rule = join_tokens(lexer)
+    local lexer_name = lexer._NAME
+    local children = lexer._CHILDREN
+    for i=1,#children do
+        local child = children[i]
+        if child._CHILDREN then
+            add_lexer(grammar, child)
+        end
+        local child_name = child._NAME
+        local rules = child._EMBEDDEDRULES[lexer_name]
+        local rules_token_rule = grammar['__'..child_name] or rules.token_rule
+        grammar[child_name] = (-rules.end_rule * rules_token_rule)^0 * rules.end_rule^-1 * V(lexer_name)
+        local embedded_child = '_' .. child_name
+        grammar[embedded_child] = rules.start_rule * (-rules.end_rule * rules_token_rule)^0 * rules.end_rule^-1
+        token_rule = V(embedded_child) + token_rule
+    end
+    grammar['__' .. lexer_name] = token_rule
+    grammar[lexer_name] = token_rule^0
+end
+
+local function build_grammar(lexer, initial_rule)
+    local children = lexer._CHILDREN
+    if children then
+        local lexer_name = lexer._NAME
+        if not initial_rule then
+            initial_rule = lexer_name
+        end
+        local grammar = { initial_rule }
+        add_lexer(grammar, lexer)
+        lexer._INITIALRULE = initial_rule
+        lexer._GRAMMAR = Ct(P(grammar))
+    else
+        lexer._GRAMMAR = Ct(join_tokens(lexer)^0)
+    end
+end
+
+-- so far. We need these local functions in the next one.
+--
+-- Before 3.24 we had tokens[..] = { category, position }, now it's a two values.
+
+local lineparsers = { }
+
+function context.lex(text,init_style)
+    local lexer = global._LEXER
+    local grammar = lexer._GRAMMAR
+    if not grammar then
+        return { }
+    elseif lexer._LEXBYLINE then -- we could keep token
+        local tokens = { }
+        local offset = 0
+        local noftokens = 0
+     -- -- pre 3.24
+     --
+     -- for line in gmatch(text,'[^\r\n]*\r?\n?') do -- could be an lpeg
+     --     local line_tokens = lpegmatch(grammar,line)
+     --     if line_tokens then
+     --         for i=1,#line_tokens do
+     --             local token = line_tokens[i]
+     --             token[2] = token[2] + offset
+     --             noftokens = noftokens + 1
+     --             tokens[noftokens] = token
+     --         end
+     --     end
+     --     offset = offset + #line
+     --     if noftokens > 0 and tokens[noftokens][2] ~= offset then
+     --         noftokens = noftokens + 1
+     --         tokens[noftokens] = { 'default', offset + 1 }
+     --     end
+     -- end
+
+     -- for line in gmatch(text,'[^\r\n]*\r?\n?') do
+     --     local line_tokens = lpegmatch(grammar,line)
+     --     if line_tokens then
+     --         for i=1,#line_tokens,2 do
+     --             noftokens = noftokens + 1
+     --             tokens[noftokens] = line_tokens[i]
+     --             noftokens = noftokens + 1
+     --             tokens[noftokens] = line_tokens[i + 1] + offset
+     --         end
+     --     end
+     --     offset = offset + #line
+     --     if noftokens > 0 and tokens[noftokens] ~= offset then
+     --         noftokens = noftokens + 1
+     --         tokens[noftokens] = 'default'
+     --         noftokens = noftokens + 1
+     --         tokens[noftokens] = offset + 1
+     --     end
+     -- end
+
+        local lineparser = lineparsers[lexer]
+        if not lineparser then -- probably a cmt is more efficient
+            lineparser = C((1-newline)^0 * newline) / function(line)
+                local length = #line
+                local line_tokens = length > 0 and lpegmatch(grammar,line)
+                if line_tokens then
+                    for i=1,#line_tokens,2 do
+                        noftokens = noftokens + 1
+                        tokens[noftokens] = line_tokens[i]
+                        noftokens = noftokens + 1
+                        tokens[noftokens] = line_tokens[i + 1] + offset
+                    end
+                end
+                offset = offset + length
+                if noftokens > 0 and tokens[noftokens] ~= offset then
+                    noftokens = noftokens + 1
+                    tokens[noftokens] = 'default'
+                    noftokens = noftokens + 1
+                    tokens[noftokens] = offset + 1
+                end
+            end
+            lineparser = lineparser^0
+            lineparsers[lexer] = lineparser
+        end
+        lpegmatch(lineparser,text)
+        return tokens
+
+    elseif lexer._CHILDREN then
+        -- as we cannot print, tracing is not possible ... this might change as we can as well
+        -- generate them all in one go (sharing as much as possible)
+        local hash = lexer._HASH -- hm, was _hash
+        if not hash then
+            hash = { }
+            lexer._HASH = hash
+        end
+        grammar = hash[init_style]
+        if grammar then
+            lexer._GRAMMAR = grammar
+        else
+            for style, style_num in next, lexer._TOKENS do
+                if style_num == init_style then
+                    -- the name of the lexers is filtered from the whitespace
+                    -- specification
+                    local lexer_name = match(style,'^(.+)_whitespace') or lexer._NAME
+                    if lexer._INITIALRULE ~= lexer_name then
+                        grammar = hash[lexer_name]
+                        if not grammar then
+                            build_grammar(lexer,lexer_name)
+                            grammar = lexer._GRAMMAR
+                            hash[lexer_name] = grammar
+                        end
+                    end
+                    break
+                end
+            end
+            grammar = grammar or lexer._GRAMMAR
+            hash[init_style] = grammar
+        end
+        return lpegmatch(grammar,text)
+    else
+        return lpegmatch(grammar,text)
+    end
+end
+
+-- todo: keywords: one lookup and multiple matches
+
+-- function context.token(name, patt)
+--     return Ct(patt * Cc(name) * Cp())
+-- end
+--
+-- -- hm, changed in 3.24 .. no longer a table
+
+function context.token(name, patt)
+    return patt * Cc(name) * Cp()
+end
+
+lexer.fold        = context.fold
+lexer.lex         = context.lex
+lexer.token       = context.token
+lexer.exact_match = context.exact_match
+
+-- helper .. alas ... the lexer's lua instance is rather crippled .. not even
+-- math is part of it
+
+local floor = math and math.floor
+local char  = string.char
+
+if not floor then
+
+    floor = function(n)
+        return tonumber(string.format("%d",n))
+    end
+
+    math = math or { }
+
+    math.floor = floor
+
+end
+
+local function utfchar(n)
+    if n < 0x80 then
+        return char(n)
+    elseif n < 0x800 then
+        return char(
+            0xC0 + floor(n/0x40),
+            0x80 + (n % 0x40)
+        )
+    elseif n < 0x10000 then
+        return char(
+            0xE0 + floor(n/0x1000),
+            0x80 + (floor(n/0x40) % 0x40),
+            0x80 + (n % 0x40)
+        )
+    elseif n < 0x40000 then
+        return char(
+            0xF0 + floor(n/0x40000),
+            0x80 + floor(n/0x1000),
+            0x80 + (floor(n/0x40) % 0x40),
+            0x80 + (n % 0x40)
+        )
+    else
+     -- return char(
+     --     0xF1 + floor(n/0x1000000),
+     --     0x80 + floor(n/0x40000),
+     --     0x80 + floor(n/0x1000),
+     --     0x80 + (floor(n/0x40) % 0x40),
+     --     0x80 + (n % 0x40)
+     -- )
+        return "?"
+    end
+end
+
+context.utfchar = utfchar
+
+-- a helper from l-lpeg:
+
+local gmatch = string.gmatch
+
+local function make(t)
+    local p
+    for k, v in next, t do
+        if not p then
+            if next(v) then
+                p = P(k) * make(v)
+            else
+                p = P(k)
+            end
+        else
+            if next(v) then
+                p = p + P(k) * make(v)
+            else
+                p = p + P(k)
+            end
+        end
+    end
+    return p
+end
+
+function lpeg.utfchartabletopattern(list)
+    local tree = { }
+    for i=1,#list do
+        local t = tree
+        for c in gmatch(list[i],".") do
+            if not t[c] then
+                t[c] = { }
+            end
+            t = t[c]
+        end
+    end
+    return make(tree)
+end
+
+-- patterns.invisibles =
+--     P(utfchar(0x00A0)) -- nbsp
+--   + P(utfchar(0x2000)) -- enquad
+--   + P(utfchar(0x2001)) -- emquad
+--   + P(utfchar(0x2002)) -- enspace
+--   + P(utfchar(0x2003)) -- emspace
+--   + P(utfchar(0x2004)) -- threeperemspace
+--   + P(utfchar(0x2005)) -- fourperemspace
+--   + P(utfchar(0x2006)) -- sixperemspace
+--   + P(utfchar(0x2007)) -- figurespace
+--   + P(utfchar(0x2008)) -- punctuationspace
+--   + P(utfchar(0x2009)) -- breakablethinspace
+--   + P(utfchar(0x200A)) -- hairspace
+--   + P(utfchar(0x200B)) -- zerowidthspace
+--   + P(utfchar(0x202F)) -- narrownobreakspace
+--   + P(utfchar(0x205F)) -- math thinspace
+
+patterns.invisibles = lpeg.utfchartabletopattern {
+    utfchar(0x00A0), -- nbsp
+    utfchar(0x2000), -- enquad
+    utfchar(0x2001), -- emquad
+    utfchar(0x2002), -- enspace
+    utfchar(0x2003), -- emspace
+    utfchar(0x2004), -- threeperemspace
+    utfchar(0x2005), -- fourperemspace
+    utfchar(0x2006), -- sixperemspace
+    utfchar(0x2007), -- figurespace
+    utfchar(0x2008), -- punctuationspace
+    utfchar(0x2009), -- breakablethinspace
+    utfchar(0x200A), -- hairspace
+    utfchar(0x200B), -- zerowidthspace
+    utfchar(0x202F), -- narrownobreakspace
+    utfchar(0x205F), -- math thinspace
+}
+
+-- now we can make:
+
+patterns.iwordtoken   = patterns.wordtoken - patterns.invisibles
+patterns.iwordpattern = patterns.iwordtoken^3
+
+-- require("themes/scite-context-theme")
+
+-- In order to deal with some bug in additional styles (I have no cue what is
+-- wrong, but additional styles get ignored and clash somehow) I just copy the
+-- original lexer code ... see original for comments.
diff --git a/context/data/scite/lexers/scite-context-lexer.lua b/context/data/scite/lexers/scite-context-lexer.lua
index 8d06b4923..816d9583b 100644
--- a/context/data/scite/lexers/scite-context-lexer.lua
+++ b/context/data/scite/lexers/scite-context-lexer.lua
@@ -10,9 +10,15 @@ local info = {
 
 -- todo: move all code here
 -- todo: explore adapted dll ... properties + init
+-- todo: play with hotspot and other properties
 
 -- The fold and lex functions are copied and patched from original code by Mitchell (see
--- lexer.lua). All errors are mine.
+-- lexer.lua). All errors are mine. The ability to use lpeg is a real nice adition and a
+-- brilliant move. The code is a byproduct of the (mainly Lua based) textadept (still a
+-- rapidly moving target) that unfortunately misses a realtime output pane. On the other
+-- hand, SciTE is somewhat crippled by the fact that we cannot pop in our own (language
+-- dependent) lexer into the output pane (somehow the errorlist lexer is hard coded into
+-- the editor). Hopefully that will change some day.
 --
 -- Starting with SciTE version 3.20 there is an issue with coloring. As we still lack
 -- a connection with scite itself (properties as well as printing to the log pane) we
@@ -26,7 +32,12 @@ local info = {
 -- After checking 3.24 and adapting to the new lexer tables things are okay again. So,
 -- this version assumes 3.24 or higher. In 3.24 we have a different token result, i.e. no
 -- longer a { tag, pattern } but just two return values. I didn't check other changes but
--- will do that when I run into issues.
+-- will do that when I run into issues. I had optimized these small tables by hashing which
+-- was more efficient but this is no longer needed.
+--
+-- In 3.3.1 another major change took place: some helper constants (maybe they're no
+-- longer constants) and functions were moved into the lexer modules namespace but the
+-- functions are assigned to the Lua module afterward so we cannot alias them beforehand.
 --
 -- I've considered making a whole copy and patch the other functions too as we need
 -- an extra nesting model. However, I don't want to maintain too much. An unfortunate
@@ -89,26 +100,38 @@ local concat = table.concat
 local global = _G
 local type, next, setmetatable, rawset = type, next, setmetatable, rawset
 
-if lexer then
-    -- in recent c++ code the lexername and loading is hard coded
-elseif _LEXERHOME then
-    dofile(_LEXERHOME .. '/lexer.lua') -- pre 3.03 situation
-else
-    dofile('lexer.lua') -- whatever
+-- less confusing as we also use lexer for the current lexer and local _M = lexer is just ugly
+
+local lexers = lexer
+
+-- these helpers are set afterwards so we delay their initialization ... there is no need to alias each time again
+
+local get_style_at, get_indent_amount, get_property, get_fold_level, FOLD_BASE, FOLD_HEADER, FOLD_BLANK, initialize
+
+initialize = function()
+    FOLD_BASE         = lexers.FOLD_BASE         or SC_FOLDLEVELBASE
+    FOLD_HEADER       = lexers.FOLD_HEADER       or SC_FOLDLEVELHEADERFLAG
+    FOLD_BLANK        = lexers.FOLD_BLANK        or SC_FOLDLEVELWHITEFLAG
+    get_style_at      = lexers.get_style_at      or GetStyleAt
+    get_indent_amount = lexers.get_indent_amount or GetIndentAmount
+    get_property      = lexers.get_property      or GetProperty
+    get_fold_level    = lexers.get_fold_level    or GetFoldLevel
+    --
+    initialize = nil
 end
 
-local LEXER = lexer
+-- we create our own extra namespace for extensions and helpers
 
-lexer.context    = lexer.context or { }
-local context    = lexer.context
+lexers.context   = lexers.context or { }
+local context    = lexers.context
 
 context.patterns = context.patterns or { }
 local patterns   = context.patterns
 
-lexer._CONTEXTEXTENSIONS = true
+lexers._CONTEXTEXTENSIONS = true
 
 local locations = {
- -- lexer.context.path,
+ -- lexers.context.path,
    "data", -- optional data directory
    "..",   -- regular scite directory
 }
@@ -135,8 +158,6 @@ function context.loaddefinitions(name)
     end
 end
 
--- maybe more efficient:
-
 function context.word_match(words,word_chars,case_insensitive)
     local chars = '%w_' -- maybe just "" when word_chars
     if word_chars then
@@ -270,36 +291,9 @@ end
 patterns.wordtoken   = R("az","AZ","\127\255")
 patterns.wordpattern = patterns.wordtoken^3 -- todo: if limit and #s < limit then
 
--- -- pre 3.24:
---
--- function context.checkedword(validwords,validminimum,s,i) -- ,limit
---     if not validwords then -- or #s < validminimum then
---         return true, { "text", i } -- { "default", i }
---     else
---         -- keys are lower
---         local word = validwords[s]
---         if word == s then
---             return true, { "okay", i } -- exact match
---         elseif word then
---             return true, { "warning", i } -- case issue
---         else
---             local word = validwords[lower(s)]
---             if word == s then
---                 return true, { "okay", i } -- exact match
---             elseif word then
---                 return true, { "warning", i } -- case issue
---             elseif upper(s) == s then
---                 return true, { "warning", i } -- probably a logo or acronym
---             else
---                 return true, { "error", i }
---             end
---         end
---     end
--- end
-
 function context.checkedword(validwords,validminimum,s,i) -- ,limit
     if not validwords then -- or #s < validminimum then
-        return true, "text", i -- { "default", i }
+        return true, "text", i -- true, "default", i
     else
         -- keys are lower
         local word = validwords[s]
@@ -349,91 +343,11 @@ end
 
 -- overloaded functions
 
-local h_table, b_table, n_table = { }, { }, { }
-
-setmetatable(h_table, { __index = function(t,level) local v = { level, LEXER.FOLD_HEADER } t[level] = v return v end })
-setmetatable(b_table, { __index = function(t,level) local v = { level, LEXER.FOLD_BLANK  } t[level] = v return v end })
-setmetatable(n_table, { __index = function(t,level) local v = { level                    } t[level] = v return v end })
-
--- -- todo: move the local functions outside (see below) .. old variant < 3.24
---
--- local newline = P("\r\n") + S("\r\n")
--- local p_yes   = Cp() * Cs((1-newline)^1) * newline^-1
--- local p_nop   = newline
---
--- local function fold_by_parsing(text,start_pos,start_line,start_level,lexer)
---     local foldsymbols = lexer._foldsymbols
---     if not foldsymbols then
---         return { }
---     end
---     local patterns = foldsymbols._patterns
---     if not patterns then
---         return { }
---     end
---     local nofpatterns = #patterns
---     if nofpatterns == 0 then
---         return { }
---     end
---     local folds = { }
---     local line_num = start_line
---     local prev_level = start_level
---     local current_level = prev_level
---     local validmatches = foldsymbols._validmatches
---     if not validmatches then
---         validmatches = { }
---         for symbol, matches in next, foldsymbols do -- whatever = { start = 1, stop = -1 }
---             if not find(symbol,"^_") then -- brrr
---                 for s, _ in next, matches do
---                     validmatches[s] = true
---                 end
---             end
---         end
---         foldsymbols._validmatches = validmatches
---     end
---     -- of course we could instead build a nice lpeg checker .. something for
---     -- a rainy day with a stack of new cd's at hand
---     local function action_y(pos,line)
---         for i=1,nofpatterns do
---             for s, m in gmatch(line,patterns[i]) do
---                 if validmatches[m] then
---                     local symbols = foldsymbols[get_style_at(start_pos + pos + s - 1)]
---                     if symbols then
---                         local action = symbols[m]
---                         if action then
---                             if type(action) == 'number' then -- we could store this in validmatches if there was only one symbol category
---                                 current_level = current_level + action
---                             else
---                                 current_level = current_level + action(text,pos,line,s,m)
---                             end
---                             if current_level < FOLD_BASE then
---                                 current_level = FOLD_BASE
---                             end
---                         end
---                     end
---                 end
---             end
---         end
---         if current_level > prev_level then
---             folds[line_num] = h_table[prev_level] -- { prev_level, FOLD_HEADER }
---         else
---             folds[line_num] = n_table[prev_level] -- { prev_level }
---         end
---         prev_level = current_level
---         line_num = line_num + 1
---     end
---     local function action_n()
---         folds[line_num] = b_table[prev_level] -- { prev_level, FOLD_BLANK }
---         line_num = line_num + 1
---     end
---     if lexer._reset_parser then
---         lexer._reset_parser()
---     end
---     local lpegpattern = (p_yes/action_y + p_nop/action_n)^0 -- not too efficient but indirect function calls are neither but
---     lpegmatch(lpegpattern,text)                             -- keys are not pressed that fast ... large files are slow anyway
---     return folds
--- end
+local h_table, b_table, n_table = { }, { }, { } -- from the time small tables were used (optimization)
 
--- The 3.24 variant; no longer subtable optimization is needed:
+setmetatable(h_table, { __index = function(t,level) local v = { level, FOLD_HEADER } t[level] = v return v end })
+setmetatable(b_table, { __index = function(t,level) local v = { level, FOLD_BLANK  } t[level] = v return v end })
+setmetatable(n_table, { __index = function(t,level) local v = { level              } t[level] = v return v end })
 
 local newline = P("\r\n") + S("\r\n")
 local p_yes   = Cp() * Cs((1-newline)^1) * newline^-1
@@ -450,45 +364,8 @@ local function fold_by_parsing(text,start_pos,start_line,start_level,lexer)
         local fold_symbols = lexer._foldsymbols
         local fold_pattern = lexer._foldpattern -- use lpeg instead (context extension)
         --
-local FOLD_BASE   = LEXER.FOLD_BASE   or SC_FOLDLEVELBASE
-local FOLD_HEADER = LEXER.FOLD_HEADER or SC_FOLDLEVELHEADERFLAG
-local FOLD_BLANK  = LEXER.FOLD_BLANK  or SC_FOLDLEVELWHITEFLAG
-local get_style_at = LEXER.get_style_at or GetStyleAt
-        --
         if fold_pattern then
             -- if no functions are found then we could have a faster one
-
-         -- fold_pattern = Cp() * C(fold_pattern) * Carg(1) / function(s,match,pos)
-         --     local symbols = fold_symbols[get_style_at(start_pos + pos + s - 1)]
-         --     local l = symbols and symbols[match]
-         --     if l then
-         --         local t = type(l)
-         --         if t == 'number' then
-         --             current_level = current_level + l
-         --         elseif t == 'function' then
-         --             current_level = current_level + l(text, pos, line, s, match)
-         --         end
-         --     end
-         -- end
-         -- fold_pattern = (fold_pattern + P(1))^0
-         -- local action_y = function(pos,line)
-         --     lpegmatch(fold_pattern,line,1,pos)
-         --     folds[line_num] = prev_level
-         --     if current_level > prev_level then
-         --         folds[line_num] = prev_level + FOLD_HEADER
-         --     end
-         --     if current_level < FOLD_BASE then
-         --         current_level = FOLD_BASE
-         --     end
-         --     prev_level = current_level
-         --     line_num = line_num + 1
-         -- end
-         -- local action_n = function()
-         --     folds[line_num] = prev_level + FOLD_BLANK
-         --     line_num = line_num + 1
-         -- end
-         -- pattern = (p_yes/action_y + p_nop/action_n)^0
-
             fold_pattern = Cp() * C(fold_pattern) / function(s,match)
                 local symbols = fold_symbols[get_style_at(start_pos + s)]
                 if symbols then
@@ -561,106 +438,19 @@ local get_style_at = LEXER.get_style_at or GetStyleAt
             prev_level    = _start_level_
             current_level = prev_level
             lpegmatch(pattern,text)
---             return folds
-local t = folds
-folds = nil
-return t -- so folds can be collected
+         -- make folds collectable
+            local t = folds
+            folds = nil
+            return t
         end
         folders[lexer] = folder
     end
     return folder(text,start_pos,start_line,start_level,lexer)
 end
 
--- local function fold_by_indentation(text,start_pos,start_line,start_level)
---     local folds = { }
---     local current_line = start_line
---     local prev_level = start_level
---     for line in gmatch(text,'[\t ]*(.-)\r?\n') do
---         if line ~= "" then
---             local current_level = FOLD_BASE + get_indent_amount(current_line)
---             if current_level > prev_level then -- next level
---                 local i = current_line - 1
---                 while true do
---                     local f = folds[i]
---                     if f and f[2] == FOLD_BLANK then
---                         i = i - 1
---                     else
---                         break
---                     end
---                 end
---                 local f = folds[i]
---                 if f then
---                     f[2] = FOLD_HEADER
---                 end -- low indent
---                 folds[current_line] = n_table[current_level] -- { current_level } -- high indent
---             elseif current_level < prev_level then -- prev level
---                 local f = folds[current_line - 1]
---                 if f then
---                     f[1] = prev_level -- high indent
---                 end
---                 folds[current_line] = n_table[current_level] -- { current_level } -- low indent
---             else -- same level
---                 folds[current_line] = n_table[prev_level] -- { prev_level }
---             end
---             prev_level = current_level
---         else
---             folds[current_line] = b_table[prev_level] -- { prev_level, FOLD_BLANK }
---         end
---         current_line = current_line + 1
---     end
---     return folds
--- end
-
--- local function fold_by_indentation(text,start_pos,start_line,start_level)
---     local folds = { }
---     local current_line = start_line
---     local prev_level = start_level
---     for line in gmatch(text,'[\t ]*(.-)\r?\n') do
---         if line ~= '' then
---             local current_level = FOLD_BASE + get_indent_amount(current_line)
---             if current_level > prev_level then -- next level
---                 local i = current_line - 1
---                 local f
---                 while true do
---                     f = folds[i]
---                     if not f then
---                         break
---                     elseif f[2] == FOLD_BLANK then
---                         i = i - 1
---                     else
---                         f[2] = FOLD_HEADER -- low indent
---                         break
---                     end
---                 end
---                 folds[current_line] = { current_level } -- high indent
---             elseif current_level < prev_level then -- prev level
---                 local f = folds[current_line - 1]
---                 if f then
---                     f[1] = prev_level -- high indent
---                 end
---                 folds[current_line] = { current_level } -- low indent
---             else -- same level
---                 folds[current_line] = { prev_level }
---             end
---             prev_level = current_level
---         else
---             folds[current_line] = { prev_level, FOLD_BLANK }
---         end
---         current_line = current_line + 1
---     end
---     for line, level in next, folds do
---         folds[line] = level[1] + (level[2] or 0)
---     end
---     return folds
--- end
-
 local folds, current_line, prev_level
 
 local function action_y()
-local FOLD_BASE   = LEXER.FOLD_BASE   or SC_FOLDLEVELBASE
-local FOLD_HEADER = LEXER.FOLD_HEADER or SC_FOLDLEVELHEADERFLAG
-local FOLD_BLANK  = LEXER.FOLD_BLANK  or SC_FOLDLEVELWHITEFLAG
-local get_indent_amount = LEXER.get_indent_amount or GetIndentAmount
     local current_level = FOLD_BASE + get_indent_amount(current_line)
     if current_level > prev_level then -- next level
         local i = current_line - 1
@@ -691,7 +481,7 @@ local get_indent_amount = LEXER.get_indent_amount or GetIndentAmount
 end
 
 local function action_n()
-    folds[current_line] = { prev_level, LEXER.FOLD_BLANK }
+    folds[current_line] = { prev_level, FOLD_BLANK }
     current_line = current_line + 1
 end
 
@@ -710,18 +500,17 @@ local function fold_by_indentation(text,start_pos,start_line,start_level)
     for line, level in next, folds do
         folds[line] = level[1] + (level[2] or 0)
     end
-    -- done
---     return folds
-local t = folds
-folds = nil
-return t -- so folds can be collected
+    -- done, make folds collectable
+    local t = folds
+    folds = nil
+    return t
 end
 
 local function fold_by_line(text,start_pos,start_line,start_level)
     local folds = { }
     -- can also be lpeg'd
     for _ in gmatch(text,".-\r?\n") do
-        folds[start_line] = n_table[start_level] -- { start_level }
+        folds[start_line] = n_table[start_level] -- { start_level } -- stile tables ? needs checking
         start_line = start_line + 1
     end
     return folds
@@ -736,11 +525,13 @@ function context.fold(text,start_pos,start_line,start_level) -- hm, we had size
     if text == '' then
         return { }
     end
-    local lexer = global._LEXER
-    local fold_by_lexer = lexer._fold
+    if initialize then
+        initialize()
+    end
+    local lexer           = global._LEXER
+    local fold_by_lexer   = lexer._fold
     local fold_by_symbols = lexer._foldsymbols
-    local filesize = 0 -- we don't know that
-local get_property = LEXER.get_property or GetProperty
+    local filesize        = 0 -- we don't know that
     if fold_by_lexer then
         if filesize <= threshold_by_lexer then
             return fold_by_lexer(text,start_pos,start_line,start_level,lexer)
@@ -763,16 +554,16 @@ end
 
 -- The following code is mostly unchanged:
 
-local function add_rule(lexer, id, rule)
+local function add_rule(lexer,id,rule)
     if not lexer._RULES then
-        lexer._RULES = {}
-        lexer._RULEORDER = {}
+        lexer._RULES     = { }
+        lexer._RULEORDER = { }
     end
     lexer._RULES[id] = rule
     lexer._RULEORDER[#lexer._RULEORDER + 1] = id
 end
 
-local function add_style(lexer, token_name, style)
+local function add_style(lexer,token_name,style)
     local len = lexer._STYLES.len
     if len == 32 then
         len = len + 8
@@ -781,39 +572,40 @@ local function add_style(lexer, token_name, style)
         print('Too many styles defined (128 MAX)')
     end
     lexer._TOKENS[token_name] = len
-    lexer._STYLES[len] = style
-    lexer._STYLES.len = len + 1
+    lexer._STYLES[len]        = style
+    lexer._STYLES.len         = len + 1
 end
 
 local function join_tokens(lexer)
-    local patterns, order = lexer._RULES, lexer._RULEORDER
+    local patterns   = lexer._RULES
+    local order      = lexer._RULEORDER
     local token_rule = patterns[order[1]]
     for i=2,#order do
         token_rule = token_rule + patterns[order[i]]
     end
     lexer._TOKENRULE = token_rule
-    return lexer._TOKENRULE
+    return token_rule
 end
 
 local function add_lexer(grammar, lexer, token_rule)
     local token_rule = join_tokens(lexer)
     local lexer_name = lexer._NAME
-    local children = lexer._CHILDREN
+    local children   = lexer._CHILDREN
     for i=1,#children do
         local child = children[i]
         if child._CHILDREN then
             add_lexer(grammar, child)
         end
-        local child_name = child._NAME
-        local rules = child._EMBEDDEDRULES[lexer_name]
-        local rules_token_rule = grammar['__'..child_name] or rules.token_rule
-        grammar[child_name] = (-rules.end_rule * rules_token_rule)^0 * rules.end_rule^-1 * V(lexer_name)
-        local embedded_child = '_' .. child_name
+        local child_name        = child._NAME
+        local rules             = child._EMBEDDEDRULES[lexer_name]
+        local rules_token_rule  = grammar['__'..child_name] or rules.token_rule
+        grammar[child_name]     = (-rules.end_rule * rules_token_rule)^0 * rules.end_rule^-1 * V(lexer_name)
+        local embedded_child    = '_' .. child_name
         grammar[embedded_child] = rules.start_rule * (-rules.end_rule * rules_token_rule)^0 * rules.end_rule^-1
-        token_rule = V(embedded_child) + token_rule
+        token_rule              = V(embedded_child) + token_rule
     end
     grammar['__' .. lexer_name] = token_rule
-    grammar[lexer_name] = token_rule^0
+    grammar[lexer_name]         = token_rule^0
 end
 
 local function build_grammar(lexer, initial_rule)
@@ -833,58 +625,21 @@ local function build_grammar(lexer, initial_rule)
 end
 
 -- so far. We need these local functions in the next one.
---
--- Before 3.24 we had tokens[..] = { category, position }, now it's a two values.
 
 local lineparsers = { }
 
 function context.lex(text,init_style)
     local lexer = global._LEXER
     local grammar = lexer._GRAMMAR
+    if initialize then
+        initialize()
+    end
     if not grammar then
         return { }
     elseif lexer._LEXBYLINE then -- we could keep token
         local tokens = { }
         local offset = 0
         local noftokens = 0
-     -- -- pre 3.24
-     --
-     -- for line in gmatch(text,'[^\r\n]*\r?\n?') do -- could be an lpeg
-     --     local line_tokens = lpegmatch(grammar,line)
-     --     if line_tokens then
-     --         for i=1,#line_tokens do
-     --             local token = line_tokens[i]
-     --             token[2] = token[2] + offset
-     --             noftokens = noftokens + 1
-     --             tokens[noftokens] = token
-     --         end
-     --     end
-     --     offset = offset + #line
-     --     if noftokens > 0 and tokens[noftokens][2] ~= offset then
-     --         noftokens = noftokens + 1
-     --         tokens[noftokens] = { 'default', offset + 1 }
-     --     end
-     -- end
-
-     -- for line in gmatch(text,'[^\r\n]*\r?\n?') do
-     --     local line_tokens = lpegmatch(grammar,line)
-     --     if line_tokens then
-     --         for i=1,#line_tokens,2 do
-     --             noftokens = noftokens + 1
-     --             tokens[noftokens] = line_tokens[i]
-     --             noftokens = noftokens + 1
-     --             tokens[noftokens] = line_tokens[i + 1] + offset
-     --         end
-     --     end
-     --     offset = offset + #line
-     --     if noftokens > 0 and tokens[noftokens] ~= offset then
-     --         noftokens = noftokens + 1
-     --         tokens[noftokens] = 'default'
-     --         noftokens = noftokens + 1
-     --         tokens[noftokens] = offset + 1
-     --     end
-     -- end
-
         local lineparser = lineparsers[lexer]
         if not lineparser then -- probably a cmt is more efficient
             lineparser = C((1-newline)^0 * newline) / function(line)
@@ -961,10 +716,10 @@ function context.token(name, patt)
     return patt * Cc(name) * Cp()
 end
 
-lexer.fold        = context.fold
-lexer.lex         = context.lex
-lexer.token       = context.token
-lexer.exact_match = context.exact_match
+lexers.fold        = context.fold
+lexers.lex         = context.lex
+lexers.token       = context.token
+lexers.exact_match = context.exact_match
 
 -- helper .. alas ... the lexer's lua instance is rather crippled .. not even
 -- math is part of it
@@ -1057,23 +812,6 @@ function lpeg.utfchartabletopattern(list)
     return make(tree)
 end
 
--- patterns.invisibles =
---     P(utfchar(0x00A0)) -- nbsp
---   + P(utfchar(0x2000)) -- enquad
---   + P(utfchar(0x2001)) -- emquad
---   + P(utfchar(0x2002)) -- enspace
---   + P(utfchar(0x2003)) -- emspace
---   + P(utfchar(0x2004)) -- threeperemspace
---   + P(utfchar(0x2005)) -- fourperemspace
---   + P(utfchar(0x2006)) -- sixperemspace
---   + P(utfchar(0x2007)) -- figurespace
---   + P(utfchar(0x2008)) -- punctuationspace
---   + P(utfchar(0x2009)) -- breakablethinspace
---   + P(utfchar(0x200A)) -- hairspace
---   + P(utfchar(0x200B)) -- zerowidthspace
---   + P(utfchar(0x202F)) -- narrownobreakspace
---   + P(utfchar(0x205F)) -- math thinspace
-
 patterns.invisibles = lpeg.utfchartabletopattern {
     utfchar(0x00A0), -- nbsp
     utfchar(0x2000), -- enquad
@@ -1103,4 +841,4 @@ patterns.iwordpattern = patterns.iwordtoken^3
 -- wrong, but additional styles get ignored and clash somehow) I just copy the
 -- original lexer code ... see original for comments.
 
-return LEXER
+return lexers
diff --git a/context/data/scite/scite-context.properties b/context/data/scite/scite-context.properties
index 3ee28e229..ce56084c0 100644
--- a/context/data/scite/scite-context.properties
+++ b/context/data/scite/scite-context.properties
@@ -27,13 +27,14 @@
 # if PLAT_WIN
 #   find.command=fgrep -G -n $(find.what) $(find.files)
 
-# bugged: bad cursor
-#
-# technology=0
-#
+# 1: better anti-aliasing on windows, also slightly diffent lineheights
+
+technology=1
+
 # not much difference
 #
 # buffered.draw=0
+# two.phase.draw=0
 #
 # no auto save:
 #
@@ -44,13 +45,13 @@
 code.page=65001
 output.code.page=65001
 
-# caret gets weird:
-#
-# technology=1
+position.maximize=1
+virtual.space=1
 
 textwrapper.margin=4
 textwrapper.length=68
-#~ textwrapper.length=80
+
+# xml.auto.close.tags=1
 
 # ConTeXt: suffixes (really needed)