module code

1 files changed, 1460 insertions, 0 deletions

diff --git a/mod/tex/context/third/rst/rst_parser.lua b/mod/tex/context/third/rst/rst_parser.lua
new file mode 100644
index 0000000..580204c
--- /dev/null
+++ b/mod/tex/context/third/rst/rst_parser.lua
@@ -0,0 +1,1460 @@
+#!/usr/bin/env texlua
+--------------------------------------------------------------------------------
+--         FILE:  rst-parser.lua
+--        USAGE:  ./rst-parser.lua 
+--  DESCRIPTION:  
+--      OPTIONS:  ---
+-- REQUIREMENTS:  ---
+--       AUTHOR:  Philipp Gesang (Phg), <megas.kapaneus@gmail.com>
+--      VERSION:  1.0
+--      CREATED:  31/08/10 11:53:49 CEST
+--------------------------------------------------------------------------------
+--
+
+rst = {}
+helpers = {}
+optional_setups = {}
+
+if context then
+    environment.loadluafile("rst_helpers")
+    environment.loadluafile("rst_setups" )
+    environment.loadluafile("rst_context")
+    rst = rst_context
+    helpers = helpers
+    optional_setups = optional_setups
+else
+    rst = require "rst_context"
+    helpers = require "rst_helpers"
+    optional_setups = require "rst_setups"
+end
+
+
+local rst_debug = true
+
+local warn = function(str, ...)
+    if not rst_debug then return false end
+    local slen = #str + 3
+    str = "*["..str.."]"
+    for i,j in ipairs({...}) do
+        if 80 - i * 8 - slen < 0 then
+            local indent = ""
+            for i=1, slen do
+                indent = indent .. " "
+            end
+            str = str .. "\n" .. indent
+        end
+        str = str .. string.format(" |%6s", string.strip(tostring(j)))
+    end
+    io.write(str .. " |\n")
+    return 0
+end
+
+local C, Cb, Cc, Cg, Cmt, Cp, Cs, Ct 
+    = lpeg.C, lpeg.Cb, lpeg.Cc, lpeg.Cg, lpeg.Cmt, lpeg.Cp, lpeg.Cs, lpeg.Ct
+
+local P, R, S, V, match 
+    = lpeg.P, lpeg.R, lpeg.S, lpeg.V, lpeg.match
+
+local utf = unicode.utf8
+
+local eol = P"\n"
+
+state = {}
+state.depth = 0
+state.bullets = {} -- mapping bullet forms to depth
+state.bullets.max = 0
+state.lastbullet = ""
+state.lastbullets = {}
+state.roman_cache = {} -- storing roman numerals that were already converted
+state.currentindent  = "" -- used in definition lists and elsewhere
+state.previousindent = "" -- for literal blocks included in paragraphs to restore the paragraph indent
+state.currentwidth   = 0 -- table layout
+state.currentlayout  = {} -- table layout
+state.previousadorn  = nil -- section underlining and overlining
+
+state.footnotes = {}
+state.footnotes.autonumber = 0
+state.footnotes.numbered   = {}
+state.footnotes.labeled    = {}
+state.footnotes.autolabel  = {}
+state.footnotes.symbol     = {}
+
+state.addme = {}
+
+do
+    local first_adornment = ""
+    local valid_adornment = P{
+        [1] = "adorncheck",
+        adorncheck  = V"check_first" * V"check_other"^1 * -P(1),
+
+    --  check_first = Cg(V"adornment_char", "first"),   -- This *should* work but but due to some heavenly
+                                                        -- intervention the governing rules of the universe
+                                                        -- have been altered so as to annoy everybody 
+                                                        -- trying to deploy it.
+
+        check_first = Cmt(V"adornment_char", function(_,_, first)
+                            first_adornment = first
+                            return true
+                        end)
+                    ,
+        check_other = Cmt(V"adornment_char", function(_,_, char)
+                            local prev = first_adornment
+                            return char == prev
+                        end)
+                    ,
+        adornment_char = S[[!"#$%&'()*+,-./:;<=>?@[]^_`{|}~]] + P[[\\]], 
+    }
+    state.valid_adornment = valid_adornment
+end
+
+local enclosed_mapping = {
+    ["'"] = "'",
+    ['"'] = '"',
+    ["("] = ")",
+    ["["] = "]",
+    ["{"] = "}",
+    ["<"] = ">",
+}
+
+local utfchar = P{ -- from l-lpeg.lua, modified to use as grammar
+    [1] = "utfchar",
+    utf8byte      = R("\128\191"),
+    utf8one       = R("\000\127"),
+    utf8two       = R("\194\223") * V"utf8byte",
+    utf8three     = R("\224\239") * V"utf8byte" * V"utf8byte",
+    utf8four      = R("\240\244") * V"utf8byte" * V"utf8byte" * V"utf8byte",
+    utfchar       = V"utf8one" + V"utf8two" + V"utf8three" + V"utf8four",
+}
+
+
+
+local parser = P{
+    [1] = V"document",
+
+    document = V"blank_line"^0 * Cs(V"block"^1),
+
+--------------------------------------------------------------------------------
+-- Blocks
+--------------------------------------------------------------------------------
+
+    block = V"explicit_markup"
+          + Cs(V"section")     / rst.escape
+          + V"target_block"
+          + V"literal_block"
+          + Cs(V"list")        / rst.escape
+          + Cs(V"line_block")  / rst.escape
+          + Cs(V"table_block") / rst.escape
+          + V"transition"    --/ rst.escape
+          + V"comment_block"
+          + Cs(V"block_quote") / rst.escape
+          + Cs(V"paragraph")   / rst.escape
+          ,
+
+--------------------------------------------------------------------------------
+-- Explicit markup block
+--------------------------------------------------------------------------------
+
+    explicit_markup_start = V"double_dot" * V"whitespace",
+
+    explicit_markup = V"footnote_block"
+                    + V"directive_block"
+                    + V"substitution_definition"
+                    ,
+
+    explicit_markup_block = V"explicit_markup"^1
+                          ,
+
+--------------------------------------------------------------------------------
+-- Directives block
+--------------------------------------------------------------------------------
+
+    directive_block = V"directive"
+                    --* (V"blank_line"^-1 * V"directive")^0
+                    * V"end_block"
+                    ,
+
+    directive = V"explicit_markup_start"
+              * C(((V"escaped_colon" + (1 - V"colon" - V"eol")) - V"substitution_text")^1)
+              * V"double_colon"
+              * (V"directive_block_multi" + V"directive_block_single")
+              / rst.directive
+              ,
+
+    directive_block_multi = C((1 - V"eol")^0) * V"eol"
+                          * V"directive_indented_lines"
+                          ,
+
+    directive_block_single = C((1 - V"eol")^1) * V"eol",
+
+--------------------------------------------------------------------------------
+-- Substitution definition block
+--------------------------------------------------------------------------------
+
+    substitution_definition = V"explicit_markup_start"
+                            * V"substitution_text"
+                            * V"whitespace"
+                            * C((1 - V"colon" - V"space" - V"eol")^1) -- directive
+                            * V"double_colon"
+                            * Ct(V"data_directive_block")
+                            * V"end_block"^-1
+                            / rst.substitution_definition
+                            ,
+
+    substitution_text = V"bar"
+                      * C((1 - V"bar" - V"eol")^1)
+                      * V"bar"
+                      ,
+                     
+    data_directive_block = V"data_directive_block_long"
+                         + V"data_directive_block_short"
+                         ,
+    data_directive_block_short = C((1 - V"eol")^0) * V"eol",
+
+    data_directive_block_long  = C((1 - V"eol")^0) * V"eol"
+                               * V"directive_indented_lines"
+                               ,
+
+    directive_indented_lines = V"directive_indented_first"
+                             * V"directive_indented_other"^0
+                             ,
+
+
+    directive_indented_first = Cmt(V"space"^1, function(s,i,indent)
+                                    warn("sub-i", #indent, i)
+                                    state.currentindent = indent
+                                    return true
+                                end)
+                             * C((1 - V"eol")^1) * V"eol"
+                             ,
+
+    directive_indented_other = Cmt(V"space"^1, function(s,i,indent)
+                                    warn("sub-m", #state.currentindent <= #indent, #indent, #state.currentindent, i)
+                                    return #state.currentindent <= #indent
+                                end)
+                             * C((1 - V"eol")^1) * V"eol"
+                             ,
+
+
+--------------------------------------------------------------------------------
+-- Explicit markup footnote block
+--------------------------------------------------------------------------------
+
+    footnote_block = V"footnote"^1 * V"end_block",
+
+    footnote = V"explicit_markup_start"
+             * (V"footnote_marker" + V"citation_reference_label")
+             * C(V"footnote_content")
+             * (V"blank_line" - V"end_block")^-1
+             / rst.footnote
+             ,
+
+    footnote_marker = V"lsquare" * C(V"footnote_label") * V"rsquare" * V"whitespace"^0
+                    ,
+
+    citation_reference_label = V"lsquare" * C(V"letter" * (1 - V"rsquare")^1) * V"rsquare" * V"whitespace"^0,
+
+    footnote_label = V"digit"^1
+                   + (V"gartenzaun" * V"letter"^1)
+                   + V"gartenzaun"
+                   + V"asterisk"
+                   ,
+
+    footnote_content = V"footnote_long" -- single line
+                     + V"footnote_simple"
+                     ,
+
+    footnote_simple = (1 - V"eol")^1 * V"eol"
+                    ,
+
+    footnote_long = (1 - V"eol")^1 * V"eol"
+                  * V"footnote_body"
+                  ,
+
+    footnote_body = V"fn_body_first"
+                  * (V"fn_body_other" + V"fn_body_other_block")^0
+                  ,
+
+    fn_body_first = Cmt(V"space"^1, function(s, i, indent)
+                        warn("fn-in", true, #indent)
+                        state.currentindent = indent
+                        return true
+                    end)
+                  * (1 - V"eol")^1 * V"eol"
+                    ,
+    
+    fn_matchindent = Cmt(V"space"^1, function(s, i, indent)
+                        local tc = state.currentindent
+                        warn("fn-ma", tc == indent, #tc, #indent, i)
+                        return tc == indent
+                    end)
+                   ,
+
+    fn_body_other = V"fn_body_other_regular"
+                  * (V"blank_line" * V"fn_body_other_regular")^0
+                  ,
+
+    fn_body_other_regular = V"fn_matchindent"
+                          * (1 - V"eol")^1 * V"eol"
+                          ,
+
+    -- TODO find a way to get those to work in footnotes!
+    fn_body_other_block = V"line_block"
+                        + V"table_block"
+                        + V"transition"
+                        + V"block_quote"
+                        + V"list"
+                        ,
+
+--------------------------------------------------------------------------------
+-- Table block
+--------------------------------------------------------------------------------
+
+    table_block = V"simple_table"
+                + V"grid_table"
+                ,
+
+--------------------------------------------------------------------------------
+-- Simple tables
+--------------------------------------------------------------------------------
+
+    simple_table = Ct(V"st_first_row"
+                    * V"st_other_rows")
+                 * V"end_block"
+                 / function (tab)
+                     return rst.simple_table(helpers.table.simple(tab))
+                 end
+                 ,
+
+    st_first_row = V"st_setindent"
+                 * C(V"st_setlayout")
+                 * V"space"^0 
+                 * V"eol"
+                 ,
+
+    st_setindent = Cmt(V"space"^0, function(s, i, indent)
+                        warn("sta-i", "true",  #indent, "set", i)
+                        state.currentindent = indent
+                        return true
+                    end)
+                 ,
+
+    st_matchindent = Cmt(V"space"^0, function(s, i, indent)
+                          warn("sta-m", state.currentindent == indent, #indent, #state.currentindent, i)
+                          return state.currentindent == indent
+                      end)
+                   ,
+
+    st_setlayout = Cmt((V"equals"^1) * (V"spaces" * V"equals"^1)^1, function(s, i, layout)
+                        local tc = state.currentlayout
+                        warn("sta-l", #layout, "set", "", i)
+                        tc.raw = layout
+                        tc.bounds = help.get_st_boundaries(layout)
+                        return true
+                    end)
+                 ,
+
+    st_other_rows = (V"st_content"^1 * V"st_separator")^1,
+
+    st_content = V"blank_line"^-1
+               * C(V"st_matchlayout"),       
+
+    st_matchlayout = -#V"st_separator" * Cmt((1 - V"eol")^1, function (s, i, content)
+                        -- Don't check for matching indent but if the rest is
+                        -- fine then the line should be sane. This allows
+                        -- cells starting with spaces.
+                        content = content:sub(#state.currentindent)
+                        local tcb = state.currentlayout.bounds
+                        local n = 1
+                        local spaces_only = P" "^1
+                        while n < #tcb.slices do
+                            local from = tcb.slices[n]  .stop
+                            local to   = tcb.slices[n+1].start
+                            local between = spaces_only:match(content, from)
+                            if not between then -- Cell spanning more than one row.
+                                -- pass
+                                warn("sta-c", "span", from, to, i)
+                            elseif not (between >= to) then
+                                warn("sta-c", "false", from, to, i)
+                                return false
+                            end
+                            n = n + 1
+                        end
+                        warn("sta-c", "true", #tcb.slices, "", i)
+                        return true
+                     end)
+                     * V"eol"
+                   ,
+
+    st_separator = V"st_matchindent"
+                 * C(V"st_normal_sep" + V"st_colspan_sep")
+                 * V"eol"
+                 ,
+
+    st_normal_sep = Cmt((V"equals"^1) * (V"spaces" * V"equals"^1)^1, function(s, i, layout)
+                        warn("sta-s", state.currentlayout.raw == layout, #layout, #state.currentlayout.raw, i)
+                        return state.currentlayout.raw == layout
+                    end)
+                  ,
+                        
+    st_colspan_sep = Cmt(V"dash"^1 * (V"spaces" * V"dash"^1)^0, function(s, i, layout)
+                         local tcb = state.currentlayout.bounds
+                         local this = help.get_st_boundaries (layout)
+                         local start_valid = false
+                         for start, _ in next, this.starts do
+                             if tcb.starts[start] then
+                                 start_valid = true
+                                 local stop_valid = false
+                                 for stop, _ in next, this.stops do
+                                     if tcb.stops[stop] then -- bingo
+                                         stop_valid = true
+                                     end
+                                 end
+                                 if not stop_valid then
+                                     warn("sta-x", stop_valid, #layout, #state.currentlayout.raw, i)
+                                     return false
+                                 end
+                             end
+                         end
+                         warn("sta-x", start_valid, #layout, #state.currentlayout.raw, i)
+                         return start_valid
+                     end)
+                   ,
+
+
+--------------------------------------------------------------------------------
+-- Grid tables
+--------------------------------------------------------------------------------
+
+    grid_table = Ct(V"gt_first_row"
+                  * V"gt_other_rows")
+               * V"blank_line"^1
+               / function(tab)
+                   return rst.grid_table(helpers.table.create(tab))
+               end
+               ,
+
+    gt_first_row = V"gt_setindent"
+                 * C(V"gt_sethorizontal")
+                 * V"eol"
+                 ,
+
+    gt_setindent = Cmt(V"space"^0, function(s, i, indent)
+                        warn("tab-i", true, #indent, "set", i)
+                        state.currentindent = indent
+                        return true
+                    end)
+                 ,
+
+    gt_layoutmarkers = V"table_intersection" + V"table_hline" + V"table_header_hline",
+
+    gt_sethorizontal = Cmt(V"gt_layoutmarkers"^3, function (s, i, width)
+                             warn("tab-h", "width", "true", #width, "set", i)
+                             state.currentwidth = #width
+                             return true
+                         end)
+                     ,
+
+    gt_other_rows = V"gt_head"^-1
+                  * V"gt_body"
+                  ,
+
+    gt_matchindent = Cmt(V"space"^0, function (s, i, this)
+        local matchme = state.currentindent
+        warn("tab-m", "indent", #this == #matchme, #this, #matchme, i)
+        return #this == #matchme
+    end)
+    ,
+
+
+    gt_cell = (V"gt_content_cell" + V"gt_line_cell") 
+    * (V"table_intersection" + V"table_vline")
+    ,
+
+    gt_content_cell = ((1 - V"table_vline" - V"table_intersection" - V"eol")^1),
+
+    gt_line_cell = V"table_hline"^1,
+
+    gt_contentrow = V"gt_matchindent"
+                   * C((V"table_intersection" + V"table_vline")
+                     * V"gt_cell"^1)
+                   * V"whitespace"^-1 * V"eol"
+                  ,
+
+    gt_body = ((V"gt_contentrow" - V"gt_bodysep")^1 * V"gt_bodysep")^1,
+
+    gt_bodysep = V"gt_matchindent" 
+               * C(Cmt(V"table_intersection"
+                     * (V"table_hline"^1 * V"table_intersection")^1, function(s, i, separator)
+                          local matchme = state.currentwidth
+                          warn("tab-m", "body", #separator == matchme, #separator, matchme, i)
+                          return #separator == matchme
+                      end))
+               * V"whitespace"^-1 * V"eol"
+               ,
+
+    gt_head = V"gt_contentrow"^1
+            * V"gt_headsep"
+            ,
+
+    gt_headsep = V"gt_matchindent" 
+               * C(Cmt(V"table_intersection" 
+                    * (V"table_header_hline"^1 * V"table_intersection")^1, function(s, i, separator)
+                          local matchme = state.currentwidth
+                          warn("tab-s", "head", #separator == matchme, #separator, matchme, i)
+                          return #separator == matchme
+                      end))
+               * V"whitespace"^-1 * V"eol"
+               ,
+
+
+--------------------------------------------------------------------------------
+-- Block quotes
+--------------------------------------------------------------------------------
+
+    block_quote = Ct(Cs(V"block_quote_first"
+                   * V"block_quote_other"^0
+                   * (V"blank_line" * V"block_quote_other"^1)^0)
+                   * (V"blank_line"
+                   *  Cs(V"block_quote_attri"))^-1)
+                * V"end_block"
+                / rst.block_quote
+                ,
+
+    block_quote_first = Cmt(V"space"^1, function (s, i, indent)
+                             warn("bkq-i", #indent, "", indent, "", i)
+                             state.currentindent = indent
+                             return true
+                         end) / ""
+                      * -V"attrib_dash"
+                      * (1 - V"eol")^1
+                      * V"eol"
+                      ,
+                    
+    block_quote_other = Cmt(V"space"^1, function (s, i, indent)
+                            warn("bkq-m", #indent, #state.currentindent, 
+                                           indent,  state.currentindent, i)
+                            return state.currentindent == indent
+                        end) / ""
+                      * -V"attrib_dash"
+                      * (1 - V"eol")^1
+                      * V"eol"
+                      ,
+
+    block_quote_attri = V"block_quote_attri_first"
+                      * V"block_quote_attri_other"^0,
+
+    block_quote_attri_first = Cmt(V"space"^1 * V"attrib_dash" * V"space", function (s, i, indent)
+                                   local t = state
+                                   warn("bqa-i", utf.len(indent), #t.currentindent, 
+                                                 indent,           t.currentindent, i)
+                                   local ret = indent:match(" *") == t.currentindent
+                                   t.currentindent = ret and indent or t.currentindent
+                                   return ret
+                               end) / ""
+                            * (1 - V"eol")^1
+                            * V"eol"
+                            ,
+                    
+    block_quote_attri_other = Cmt(V"space"^1, function (s, i, indent)
+                                  warn("bqa-m", #indent, utf.len(state.currentindent),
+                                                 indent,  state.currentindent, i)
+                                  return utf.len(state.currentindent) == #indent
+                              end) / ""
+                            * (1 - V"eol")^1
+                            * V"eol"
+                            ,
+
+--------------------------------------------------------------------------------
+-- Line blocks
+--------------------------------------------------------------------------------
+
+    line_block = Cs(V"line_block_first"
+                  * (V"line_block_other"
+                   + V"line_block_empty")^1)
+               --* V"blank_line"
+               * V"end_block"
+               / rst.line_block
+               ,
+
+    line_block_marker = V"space"^0 * V"bar" * V"space",
+
+    line_block_empty_marker = V"space"^0 * V"bar" * V"space"^0 * V"eol",
+
+
+    line_block_first = Cmt(V"line_block_marker", function(s, i, marker)
+                            warn("lbk-i", #marker, "", marker, "", i)
+                            state.currentindent = marker
+                            return true
+                        end) / ""
+                     * V"line_block_line"
+                     ,
+
+    line_block_empty = Cmt(V"line_block_empty_marker", function(s, i, marker)
+                            warn("lbk-e", #marker, #state.currentindent, marker, state.currentindent, i)
+                            marker = marker:gsub("|.*", "| ")
+                            return state.currentindent == marker
+                        end) / ""
+                     / rst.line_block_empty
+                     ,
+
+    line_block_other = Cmt(V"line_block_marker", function(s, i, marker)
+                            warn("lbk-m", #marker, #state.currentindent, marker, state.currentindent, i)
+                            return state.currentindent == marker
+                        end) / ""
+                     * V"line_block_line"
+                     ,
+
+    line_block_line = Cs((1 - V"eol")^1
+                       * V"line_block_cont"^0
+                       * V"eol")
+                    / rst.line_block_line
+                    ,
+
+    line_block_cont = (V"eol" - V"line_block_marker")
+                    * Cmt(V"space"^1, function(s, i, spaces)
+                            warn("lbk-c", #spaces, #state.currentindent, spaces, state.currentindent, i)
+                            return #spaces >= #state.currentindent
+                        end) / ""
+                    * (1 - V"eol")^1
+                    ,
+
+--------------------------------------------------------------------------------
+-- Literal blocks
+--------------------------------------------------------------------------------
+
+    literal_block = V"literal_block_marker"
+                    * Cs(V"literal_block_lines")
+                    * V"end_block"
+                    / rst.literal_block,
+
+    literal_block_marker = V"double_colon" * V"whitespace"^0 * V"eol" * V"blank_line",
+
+    literal_block_lines = V"unquoted_literal_block_lines"
+                        + V"quoted_literal_block_lines",
+
+    unquoted_literal_block_lines = V"literal_block_first"
+                                 * (V"blank_line"^-1 * V"literal_block_other")^0
+                                 ,
+                                 
+    quoted_literal_block_lines =   V"quoted_literal_block_first"
+                                 * (V"blank_line"^-1 * V"quoted_literal_block_other")^0
+                                 ,
+
+    literal_block_first = Cmt(V"space"^1, function (s, i, indent)
+                        warn("lbk-f", #indent, "", "", i)
+                        if not indent or
+                            indent == "" then
+                            return false
+                        end
+                        if state.currentindent and #state.currentindent < #indent then
+                            state.currentindent = state.currentindent .. " "
+                            return true
+                        else
+                            state.currentindent = " "
+                            return true
+                        end
+                    end)
+                   * V"rest_of_line"
+                   * V"eol",
+
+    literal_block_other = Cmt(V"space"^1, function (s, i, indent)
+                        warn("lbk-m", 
+                             #indent,
+                             #state.currentindent,
+                             #indent >= #state.currentindent, 
+                             i)
+                        return #indent >= #state.currentindent
+                    end)
+                   * V"rest_of_line"
+                   * V"eol",
+
+    quoted_literal_block_first = Cmt(V"adornment_char", function (s, i, indent)
+                        warn("lbk-f", #indent, "", "", i)
+                        if not indent    or
+                            indent == "" then
+                            return false
+                        end
+                        state.currentindent = indent
+                        return true
+                    end)
+                   * V"rest_of_line"
+                   * V"eol",
+
+    quoted_literal_block_other = Cmt(V"adornment_char", function (s, i, indent)
+                        warn("lbk-m", 
+                             #indent,
+                             #state.currentindent,
+                             #indent >= #state.currentindent, 
+                             i)
+                        return #indent >= #state.currentindent
+                    end)
+                   * V"rest_of_line"
+                   * V"eol",
+
+--------------------------------------------------------------------------------
+-- Lists
+--------------------------------------------------------------------------------
+
+    list = (V"option_list"
+          + V"bullet_list"
+          + V"definition_list"
+          + V"field_list")
+         - V"explicit_markup_start"
+         ,
+
+--------------------------------------------------------------------------------
+-- Option lists
+--------------------------------------------------------------------------------
+
+    option_list = Cs((V"option_list_item"
+                   * V"blank_line"^-1)^1)
+                /rst.option_list,
+
+    option_list_item = Ct(C(V"option_group")
+                        * Cs(V"option_description"))
+                     / rst.option_item,
+
+    option_description = V"option_desc_next"
+                       + V"option_desc_more"
+                       + V"option_desc_single",
+
+    option_desc_single = V"space"^2
+                       --* V"rest_of_line"
+                       * (1 - V"eol")^1
+                       * V"eol",
+
+    option_desc_more = V"space"^2
+                     * (1 - V"eol")^1
+                     * V"eol"
+                     * V"indented_lines"
+                     * (V"blank_line" * V"indented_lines")^0,
+
+    option_desc_next = V"eol"
+                     * V"indented_lines"
+                     * (V"blank_line" * V"indented_lines")^0,
+
+    option_group = V"option"
+                 * (V"comma" * V"space" * V"option")^0,
+
+    option = (V"option_posixlong"
+            + V"option_posixshort"
+            + V"option_dos_vms")
+            * V"option_arg"^-1,
+
+    option_arg = (V"equals" + V"space") 
+               * ((V"letter" * (V"letter" + V"digit")^1)
+                + (V"angle_left" * (1 - V"angle_right")^1 * V"angle_right")),
+
+    option_posixshort = V"dash" * (V"letter" + V"digit"),
+
+    option_posixlong = V"double_dash"
+                     * V"letter"
+                     * (V"letter" + V"digit" + V"dash")^1,
+
+    option_dos_vms = V"slash"
+                   * V"letter"^1,
+
+--------------------------------------------------------------------------------
+-- Field lists (for bibliographies etc.)
+--------------------------------------------------------------------------------
+
+    field_list = Cs(V"field"
+                  * (V"blank_line"^-1 * V"field")^0)
+               * V"end_block"
+               / rst.field_list,
+
+    field = Ct(V"field_marker"
+             * V"field_body")
+          / rst.field,
+
+    field_marker = V"colon"
+                 * C(V"field_name")
+                 * V"colon",
+
+    field_name = (V"escaped_colon" + (1 - V"colon"))^1,
+
+    field_body = V"field_single" + V"field_multi",
+
+    field_single = C((1 -V"eol")^1) * V"eol",
+
+    field_multi = C((1 - V"eol")^0 * V"eol"
+                  * V"indented_lines"^-1),
+
+--------------------------------------------------------------------------------
+-- Definition lists
+--------------------------------------------------------------------------------
+
+    definition_list = Ct((V"definition_item" - V"comment")
+                      * (V"blank_line" * V"definition_item")^0)
+                    * V"end_block"
+                    / rst.deflist
+                    ,
+
+    definition_item = Ct(C(V"definition_term")
+                       * V"definition_classifiers"
+                       * V"eol"
+                       * Ct(V"definition_def"))
+                    ,
+
+    definition_term = #(1 - V"space" - V"field_marker") 
+                    * (1 - V"eol" - V"definition_classifier_separator")^1
+                    ,
+
+    definition_classifier_separator = V"space" * V"colon" * V"space",
+
+    definition_classifiers = V"definition_classifier"^0,
+
+    definition_classifier = V"definition_classifier_separator"
+                          * C((1 - V"eol" - V"definition_classifier_separator")^1)
+                          ,
+
+    definition_def = C(V"definition_firstpar") * C(V"definition_par")^0
+                   ,
+
+    definition_indent = Cmt(V"space"^1, function(s, i, indent)
+                            warn("def-i", #indent, #state.currentindent, indent == state.currentindent, i)
+                            state.currentindent = indent
+                            return true
+                        end),
+
+    definition_firstpar = V"definition_parinit"
+                        * (V"definition_parline" - V"blank_line")^0
+                        ,
+
+    definition_par = V"blank_line"
+                   * (V"definition_parline" - V"blank_line")^1
+                   ,
+
+    definition_parinit = V"definition_indent"
+                       * (1 - V"eol")^1
+                       * V"eol"
+                       ,
+
+    definition_parline = V"definition_match"
+                       * (1 - V"eol")^1
+                       * V"eol"
+                       ,
+
+    definition_match = Cmt(V"space"^1, function (s, i, this)
+                            warn("def-m", #this, #state.currentindent, this == state.currentindent, i)
+                            return this == state.currentindent
+                        end),
+
+--------------------------------------------------------------------------------
+-- Bullet lists and enumerations
+--------------------------------------------------------------------------------
+
+    -- the next rule handles enumerations as well
+    bullet_list = V"bullet_init"
+                * (V"blank_line"^-1 * (V"bullet_list" + V"bullet_continue"))^1
+                * V"bullet_stop"
+                * Cmt(Cc(nil), function (s, i)
+                    local t = state
+                    warn("close", t.depth)
+                    t.bullets[t.depth] = nil -- “pop”
+                    t.depth = t.depth - 1
+                    t.lastbullet = t.lastbullets[t.depth]
+                    return true
+                end),
+
+    bullet_stop = V"end_block" / rst.stopitemize,
+
+    bullet_init = Ct(C(V"bullet_first") * V"bullet_itemrest")
+                / rst.bullet_item
+                ,
+
+    bullet_first = #Cmt(V"bullet_indent", function (s, i, bullet)
+                        local t = state
+                        local oldbullet = t.bullets[t.depth]
+                        local n_spaces = match(P" "^0, bullet)
+                        warn("first", 
+                            t.depth, 
+                            (t.depth == 0 and n_spaces >= 1) or
+                            (t.depth >  0 and n_spaces >  1), 
+                            bullet,
+                            oldbullet,
+                            helpers.list.conversion(bullet))
+
+                        if t.depth == 0 and n_spaces >= 1 then -- first level
+                            t.depth = 1             -- “push”
+                            t.bullets[1] = bullet
+                            t.lastbullet = bullet
+                            t.bullets.max = t.bullets.max < t.depth and t.depth or t.bullets.max
+                            return true
+                        elseif t.depth > 0 and n_spaces > 1 then    -- sublist (of sublist)^0
+                            if n_spaces >= utf.len(oldbullet) then
+                                t.lastbullets[t.depth] = t.lastbullet
+                                t.depth = t.depth + 1
+                                t.bullets[t.depth] = bullet
+                                t.lastbullet = bullet
+                                t.bullets.max = t.bullets.max < t.depth and t.depth or t.bullets.max
+                                return true
+                            end
+                        end
+                        return false
+                    end)
+                    * V"bullet_indent"
+                    / rst.startitemize
+                    ,
+
+    bullet_indent = V"space"^0 * V"bullet_expr" * V"space"^1,
+
+    bullet_cont  = Cmt(V"bullet_indent", function (s, i, bullet)
+                        local t = state
+                        local conversion = helpers.list.conversion
+                        warn("conti", 
+                                t.depth, 
+                                bullet == t.bullets[t.depth],
+                                bullet, 
+                                t.bullets[t.depth],
+                                t.lastbullets[t.depth],
+                                conversion(t.lastbullet),
+                                conversion(bullet)
+                                )
+
+                        if utf.len(t.bullets[t.depth]) ~= utf.len(bullet) then
+                            return false
+                        elseif not conversion(bullet) and t.bullets[t.depth] == bullet then
+                            return true
+                        elseif conversion(t.lastbullet) == conversion(bullet) then -- same type
+                            local autoconv  = conversion(bullet) == "auto"
+                            local greater   = helpers.list.greater  (bullet, t.lastbullet)
+                            t.lastbullet = bullet
+                            return autoconv or successor or greater
+                        end
+                    end),
+
+    bullet_continue = Ct(C(V"bullet_cont") * V"bullet_itemrest")
+                    /rst.bullet_item
+                    ,
+
+    bullet_itemrest = C(V"bullet_rest"                               -- first line
+                       * ((V"bullet_match" * V"bullet_rest")^0        -- any successive lines
+                        * (V"blank_line"
+                         * (V"bullet_match" * (V"bullet_rest" - V"bullet_indent"))^1)^0))
+                    ,
+                         --                                     ^^^^^^^^^^^^^
+                         --                                     otherwise matches bullet_first
+ 
+    bullet_rest = (1 - V"eol")^1 * V"eol",  -- rest of one line
+
+    bullet_next  = V"space"^1
+                 ,
+
+    bullet_match = Cmt(V"bullet_next", function (s, i, this)
+                         local t = state
+                         warn("match", 
+                                t.depth, 
+                                string.len(this) == utf.len(t.bullets[t.depth]),
+                                utf.len(t.bullets[t.depth]), string.len(this) )
+                         return string.len(this) == utf.len(t.bullets[t.depth])
+                     end)
+                 ,
+
+    bullet_expr = V"bullet_char"
+                + (P"(" * V"number_char" * P")")
+                +        (V"number_char" * P")")
+                + (V"number_char" * V"dot") * #V"space"
+                + (V"number_char" * #V"space")
+                ,
+
+    number_char = V"roman_numeral"
+                + V"Roman_numeral"
+                + P"#"
+                + V"digit"^1 
+                + R"AZ"
+                + R"az"
+                ,
+
+--------------------------------------------------------------------------------
+-- Transitions
+--------------------------------------------------------------------------------
+
+    transition_line = C(V"adornment_char"^4),
+
+    transition = V"transition_line" * V"eol"
+               * V"end_block"
+               / rst.transition
+               ,
+
+--------------------------------------------------------------------------------
+-- Sectioning
+--------------------------------------------------------------------------------
+
+    section_adorn = V"adornment_char"^1,
+
+    section = ((V"section_text" * V"section_once")
+             + (V"section_before" * V"section_text" * V"section_after"))
+            / rst.section
+            * (V"end_block" + V"blank_line")
+            ,
+
+    -- The whitespace handling after the overline is necessary because headings
+    -- without overline aren't allowed to be indented.
+    section_before = C(Cmt(V"section_adorn", function(s,i, adorn)
+                          state.previousadorn = adorn
+                          warn ("sec-f", state.valid_adornment:match(adorn), adorn:sub(1,2) .. "...", "", i)
+                          if state.valid_adornment:match(adorn) then
+                              return true
+                          end
+                          return false
+                      end))
+                   * V"whitespace"^0
+                   * V"eol"
+                   * V"whitespace"^0
+                   ,
+
+    section_text = C((1 - V"space" - V"eol") * (1 - V"eol")^1) * V"eol",
+
+    section_after = C(Cmt(V"section_adorn", function(s,i, adorn)
+                         local tests = false
+                         tests = state.valid_adornment:match(adorn) and true
+                         if state.previousadorn then
+                             tests = tests and adorn == state.previousadorn
+                         end
+                         warn ("sec-o", tests, adorn:sub(1,2) .. "…", "", i)
+                         state.previousadorn = nil
+                         return tests
+                     end))
+                    * V"whitespace"^0
+                    ,
+
+    section_once = C(Cmt(V"section_adorn", function(s,i, adorn)
+                         local tests = false
+                         tests = state.valid_adornment:match(adorn) and true
+                         warn ("sec-o", tests, adorn:sub(1,2) .. "…", "", i)
+                         state.previousadorn = nil
+                         return tests
+                     end))
+                    * V"whitespace"^0
+                    ,
+
+--------------------------------------------------------------------------------
+-- Target Blocks
+--------------------------------------------------------------------------------
+
+    tname_normal = C((V"escaped_colon" + 1 - V"colon")^1)
+                 * V"colon",
+
+    tname_bareia = C(V"bareia"
+                    * (1 - V"eol" - V"bareia")^1
+                    * V"bareia")
+                 * V"colon",
+
+    target_name = V"double_dot"
+                * V"space"
+                * V"underscore"
+                * (V"tname_bareia" + V"tname_normal"),
+
+    target_firstindent = V"eol" * Cg(V"space"^1, "indent"),
+
+    target_nextindent  = V"eol" * C(V"space"^1),
+
+    target_indentmatch = Cmt(V"target_nextindent" -- I ♡ LPEG!
+                           * Cb("indent"), function (s, i, a, b)
+                                return a == b 
+                            end),
+
+    target_link  = ( V"space"^0 * V"target_firstindent"
+                 * Ct(C(1 - V"whitespace" - V"eol")^1 
+                    * (V"target_indentmatch"
+                     * C(1 - V"whitespace" - V"eol")^1)^0)
+                 * V"eol" * #(1 - V"whitespace" - "eol")) / rst.joinindented
+                 + C((1 - V"eol")^1) * V"eol" * #(V"double_dot" + V"double_underscore" + V"eol")
+                 + (1 - V"end_block")^0 * Cc(""),
+
+    target       = Ct((V"target_name" * (V"space"^0 * V"eol" * V"target_name")^0)
+                 * V"space"^0
+                 * V"target_link")
+                 / rst.target,
+
+    anonymous_prefix = (V"double_dot" * V"space" * V"double_underscore" * V"colon")
+                     + (V"double_underscore")
+                     ,
+
+    anonymous_target = V"anonymous_prefix"
+                     * V"space"^0
+                     * Ct(Cc"" * V"target_link")
+                     / rst.target
+                     ,
+
+    target_block = (V"anonymous_target" + V"target")^1
+                 * V"end_block",
+
+--------------------------------------------------------------------------------
+-- Paragraphs * Inline Markup
+--------------------------------------------------------------------------------
+
+    paragraph = Ct(V"par_first"
+                 * V"par_other"^0) / rst.paragraph
+              * V"end_block"
+              * V"reset_depth"
+              ,
+
+    par_first = V"par_setindent" * C((1 - V"literal_block_shorthand" - V"eol")^1) * V"eol",
+
+    par_other = V"par_matchindent" 
+              * C((1 - V"literal_block_shorthand" - V"eol")^1)
+              * (V"included_literal_block" + V"eol")
+              ,
+
+    par_setindent = Cmt(V"space"^0, function (s, i, indent)
+                        warn("par-i", #indent, "", "", i)
+                        state.previousindent = state.currentindent
+                        state.currentindent = indent
+                        return true
+                    end),
+
+    par_matchindent = Cmt(V"space"^0, function (s, i, indent)
+                          warn("par-m", state.currentindent == indent, #indent, #state.currentindent, i)
+                          return state.currentindent == indent
+                      end),
+
+    link_standalone = C(V"uri")
+                    / rst.link_standalone,
+
+    reference = Cs(V"_reference")
+              / rst.reference,
+
+    _reference = (1 - V"underscore" - V"spacing" - V"eol" - V"punctuation" - V"groupchars")^1 * V"underscore",
+
+    included_literal_block = V"literal_block_shorthand"
+                           * V"literal_block_markerless"
+                           * Cmt(Cp(), function (s, i, _)
+                                  warn("par-s", "", #state.previousindent, #state.currentindent, i)
+                                  state.currentindent = state.previousindent
+                                  return true
+                              end)
+                           ,
+
+    literal_block_shorthand = Cs(((V"colon" * V"space" * V"double_colon")
+                              + V"double_colon")
+                             * V"whitespace"^0
+                             * V"eol" 
+                             * V"blank_line") 
+                             -- The \unskip is necessary because the lines of a
+                             -- paragraph get concatenated from a table with a
+                             -- space as separator. And the literal block is
+                             -- treated as one such line, hence it would be
+                             -- preceded by a space. As the ":" character
+                             -- always  follows a non-space this should be a
+                             -- safe, albeit unpleasant, hack. If you don't
+                             -- agree then file a bug report and I'll look into
+                             -- it.
+                             / "\\\\unskip:"
+                            ,
+
+    literal_block_markerless = Cs(V"literal_block_lines"
+                               * (V"blank_line"^1 * V"literal_block_lines")^0)
+                             * V"blank_line"
+                             / rst.included_literal_block
+                             ,
+
+    -- This is needed because lpeg.Cmt() patterns are evaluated even
+    -- if they are part of a larger pattern that doesn’t match. The
+    -- result is that they confuse the nesting.
+    -- Resetting the current nesting depth at every end of block
+    -- should be safe because this pattern always matches last.
+    reset_depth = Cmt(Cc("nothing") / "", function (s,i, something)
+                        state.depth = 0
+                        return true
+                    end)
+                ,
+
+--------------------------------------------------------------------------------
+-- Comments
+--------------------------------------------------------------------------------
+
+    comment_block = V"comment"^1
+                  * V"end_block"
+                  ,
+
+    comment = V"double_dot" / ""
+            * (V"block_comment" + V"line_comment")
+            ,
+
+    block_comment = V"eol"
+                  * Cs(V"indented_lines")
+                  / rst.block_comment,
+
+    line_comment = V"whitespace"^1
+                 * Cs((1 - V"eol")^0 * V"eol")
+                 / rst.line_comment
+                 ,
+
+--------------------------------------------------------------------------------
+-- Generic indented block
+--------------------------------------------------------------------------------
+
+    indented_lines = V"indented_first"
+                   * (V"indented_other"^0
+                    * (V"blank_line" * V"indented_other"^1)^0)
+                   ,
+
+    indented_first = Cmt(V"space"^1, function (s, i, indent)
+                        warn("idt-f", indent, i)
+                        state.currentindent = indent
+                        return true
+                    end)
+                   * (1 - V"eol")^1
+                   * V"eol",
+
+    indented_other = Cmt(V"space"^1, function (s, i, indent)
+                        warn("idt-m", #indent, #state.currentindent, #indent == #state.currentindent, i)
+                        return indent == state.currentindent
+                    end)
+                   * (1 - V"eol")^1
+                   * V"eol",
+
+--------------------------------------------------------------------------------
+-- Urls
+--------------------------------------------------------------------------------
+    uri = V"url_protocol" * V"url_domain" * (V"slash" * V"url_path")^0,
+
+    url_protocol = (P"http" + P"ftp" + P"shttp" + P"sftp") * P"://",
+    url_domain_char = 1 - V"dot" - V"spacing" - V"eol" - V"punctuation",
+    url_domain = V"url_domain_char"^1 * (V"dot" * V"url_domain_char"^1)^0,
+    url_path_char = R("az", "AZ", "09") + S"-_.!~*'()",
+    url_path = V"slash" * (V"url_path_char"^1 * V"slash"^-1)^1,
+
+--------------------------------------------------------------------------------
+-- Terminal Symbols and Low-Level Elements
+--------------------------------------------------------------------------------
+
+    word = (1 - V"punctuation" - V"end_block" - V"spacing" - V"eol")^1, -- TODO : no punctuation (later)
+
+    asterisk = P"*",
+    double_asterisk = V"asterisk" * V"asterisk",
+
+    bareia = P"`",
+    double_bareia = V"bareia" * V"bareia",
+    escaped_bareia = (Cs(V"backslash") / "" * V"bareia") + 1,
+
+    slash = P"/",
+    doubleslash = V"slash" * V"slash",
+
+    backslash = P"\\",
+    bar = P"|",
+
+    groupchars = S"()[]{}",
+
+    --- Punctuation
+    -- Some of the following are used for markup as well as for punctuation.
+
+    comma = P",",
+    colon = P":",
+    double_colon = V"colon" * V"colon",
+    escaped_colon = V"backslash" * V"colon",
+    dot = P".",
+    period = V"dot",
+    double_dot = V"dot" * V"dot",
+    interpunct = P"·",
+    underscore = P"_",
+    double_underscore = V"underscore" * V"underscore",
+    dash = P"-",
+    double_dash = V"dash" * V"dash",
+    triple_dash = V"double_dash" * V"dash",
+    emdash = P"—",
+    attrib_dash = V"triple_dash" + V"double_dash" + V"emdash", -- begins quote attribution blocks
+    dashes = V"dash" + P"‒" + P"–" + V"emdash" + P"―",
+    hyphen = P"‐",
+    semicolon = P";",
+    questionmark = P"?",
+    exclamationmark = P"!",
+    inverted_exclamationmark = P"¡",
+    inverted_questionmark = P"¿",
+    interrobang = P"‽",
+
+    apostrophe = P"’" + P"'",
+    --brackets   = P"[ ], (",, { }, ⟨ ⟩ )
+    lsquare = P"[",
+    rsquare = P"]",
+    ellipsis   = P"…" + P"...",
+    guillemets = P"«" + P"»",
+    quotationmarks= P"‘" + P"’" + P"“" + P"”",
+    solidus= P"⁄",
+
+
+    punctuation = V"apostrophe"
+                + V"colon" 
+                + V"comma" 
+                + V"dashes"
+                + V"dot" 
+                + V"ellipsis"
+                + V"exclamationmark"
+                + V"guillemets"
+                + V"hyphen"
+                + V"interpunct"
+                + V"interrobang"
+                + V"questionmark" 
+                + V"quotationmarks"
+                + V"semicolon" 
+                + V"slash"
+                + V"solidus"
+                + V"underscore"
+                ,
+
+    -- These are treated separately as the might begin a paragraph (sigh!).
+    inverted_punctuation = V"inverted_exclamationmark"
+                         + V"inverted_questionmark",
+
+    -- End punctuation
+
+    letter = R"az" + R"AZ",
+
+    equals = P"=",
+
+    space = P" ",
+    spaces = V"space"^1,
+    whitespace = (P" " + Cs(P"\t") / "        " + Cs(S"\v") / " "),
+    spacing = V"whitespace"^1,
+    blank_line = V"space"^0 * V"eol",
+
+    rest_of_line = (1 - V"eol")^1,
+
+    eol = P"\n",
+    eof = V"eol"^0 * -P(1),
+
+    end_block = V"blank_line"^1
+              + V"eof"
+              + (V"whitespace"^0 * V"eol"
+               * (V"whitespace"^0 * V"eol")^0 * V"eof")
+              ,
+
+    -- diverse markup character sets
+    delimiters = P"‐" + P"‑" + P"‒" + P"–" + V"emdash" + V"space",   -- inline markup
+    adornment_char = S[[!"#$%&'()*+,-./:;<=>?@[]^_`{|}~]] + P[[\\]], -- headings
+    bullet_char = S"*+-" + P"•" + P"‣" + P"⁃",                       -- bullet lists
+    argument_char = V"double_dash" * V"dash" * V"slash",             -- option lists
+
+    digit = R"09",
+    roman_numeral = S"ivxlcdm"^1,
+    Roman_numeral = S"IVXLCDM"^1,
+
+    inline_delimiter = P"**" + P"``" + S"*`",
+    angle_left       = P"<",
+    angle_right      = P">",
+    enclosed_open    = S[['"([{<]],
+    enclosed_close   = S[['")]}>]],
+
+    gartenzaun = P"#",
+
+    table_intersection = P"+",
+    table_hline = V"dash",
+    table_vline = V"bar",
+    table_header_hline = P"=",
+}
+
+local function load_file (name)
+    f = assert(io.open(name, "r"), "Not a file!")
+    if not f then return 1 end
+    local tmp = f:read("*all")
+    f:close()
+    return tmp
+end
+
+local function save_file (name, data)
+    f = assert(io.open(name, "w"), "Could not open file "..name.." for writing! Check its permissions")
+    if not f then return 1 end
+    f:write(data)
+    f:close()
+    return 0
+end
+
+local function get_setups ()
+    local optional_setups = optional_setups -- might expect lots of calls
+    local setups = [[
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
+%{                           Setups                            }%
+%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% General                                                       %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\setupcolors[state=start]
+\setupinteraction[state=start,focus=standard,color=darkgreen,contrastcolor=darkgreen]
+\setupbodyfontenvironment [default]  [em=italic]
+\sethyphenatedurlnormal{:=?&}
+\sethyphenatedurlbefore{?&}
+\sethyphenatedurlafter {:=/-}
+
+\doifundefined{startparagraph}{% -->mkii
+  \enableregime[utf]
+  \let\startparagraph\relax
+  \let\stopparagraph\endgraf
+}
+
+]]
+
+    for item, _ in next, state.addme do
+        local f = optional_setups[item]
+        setups = f and setups .. f() or setups
+    end
+    return setups .. [[
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
+%{                           Main                              }%
+%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\starttext
+]]
+end
+
+local function main()
+    local testdata = load_file(arg[1])
+    if testdata == 1 then return 1 end
+
+    local processeddata = parser:match(testdata)
+    local setups = get_setups()
+
+    processeddata = setups .. processeddata .. [[
+
+\stoptext
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
+%{                        End of Document                      }%
+%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% vim:ft=context:tw=65:shiftwidth=2:tabstop=2:set expandtab
+]]
+
+    if processeddata then
+        save_file(arg[2], processeddata)
+    else
+        return 1
+    end
+    return 0
+end
+
+do
+    local Cs, P = lpeg.Cs, lpeg.P
+    local percent = P"\%"
+    local eol     = P"\n"
+    local comment = percent * (1 - eol)^0 * eol / "\n"
+    strip_comments = Cs((comment + 1)^0)
+end
+
+function do_rst_file(fname)
+    local rst_parser = parser
+    local raw_data   = load_file(fname)
+    local processed  = rst_parser:match(raw_data)
+    local setups     = get_setups()
+    local tmp_file   = tex.jobname .. "–rst_temporary.tex.tmp"
+
+    if processed then
+        processed = strip_comments:match(setups..processed.."\n\\stoptext\n")
+        save_file (tmp_file,processed)
+        context.input("./"..tmp_file)
+    end
+end
+
+
+if not context then
+    return main()
+end