1 files changed, 92 insertions, 86 deletions

diff --git a/notYetAnotherWiki.lua b/notYetAnotherWiki.lua
index f53691b..be41c3a 100755
--- a/notYetAnotherWiki.lua
+++ b/notYetAnotherWiki.lua
@@ -6,10 +6,9 @@
     Normally I define functions and globals at the top, but here I'm interleaving them.
 ]]
 
-local Lunamark = require("lunamark")    -- https://github.com/jgm/lunamark
-local Lpeg = require("lpeg")            -- https://www.inf.puc-rio.br/~roberto/lpeg/lpeg.html  Lunamark uses this, so we can to.
-local RE = require("re")                -- Part of lpeg.  https://www.inf.puc-rio.br/~roberto/lpeg/re.html
-
+local Lunamark = require'lunamark'      -- https://github.com/jgm/lunamark
+local Lpeg = require'lpeg'              -- https://www.inf.puc-rio.br/~roberto/lpeg/lpeg.html  Lunamark uses this, so we can to.
+local RE = require're'          -- Part of lpeg.  https://www.inf.puc-rio.br/~roberto/lpeg/re.html
 
 ---------------------------------------------------------------------------------
 -- Some global data.
@@ -34,9 +33,9 @@ local Files, Subs, xLinks = {}, {}, {}
 local Context = {}                      -- Coz can't otherwise pass context through to the deeper Lunamark functions I'm overriding.
 
 local Template = ''
-local h = io.open("default.template", 'r')
+local h = io.open('default.template', 'r')
 if nil ~= h then
-    Template = h:read('*a')
+    Template = h:read('*a')     -- NOTE - Lua 5.3 changes to not need the *, but ignores it if it's there.
     h:close()
 else
     print('oops! No such file ' .. 'default.template')
@@ -73,12 +72,12 @@ local stringBits = function(l)
     local bits = {}
     local last = 1
     for j = 1, #l do
-        if '/' == string.sub(l, j, j) then
-            table.insert(bits, string.sub(l, last, j - 1))
+        if '/' == l:sub(j, j) then
+            table.insert(bits, l:sub(last, j - 1))
             last = j + 1
         end
     end
-    return bits, string.sub(l, last)
+    return bits, l:sub(last)
 end
 
 
@@ -97,7 +96,7 @@ local toFile = function(name, key, value)
         end
         Files[name].path = path
 --      Files[name].body = ''
-        if ("Foswiki" == bits[1]) or ("PmWiki" == bits[1]) then Files[name].ogWiki = bits[1] end
+        if ('Foswiki' == bits[1]) or ('PmWiki' == bits[1]) then Files[name].ogWiki = bits[1] end
     end
     if nil ~= key         then Files[name][key] = value end
     for i, v in ipairs{'metadata', 'bits', } do
@@ -105,7 +104,7 @@ local toFile = function(name, key, value)
     end
     -- Open the files and do the initial cleanups.
     local body = ''
-    if '.md' ~= string.sub(name, -3, -1) then
+    if '.md' ~= name:sub(-3, -1) then
         h = io.open(name .. '.md', 'r')
         if nil ~= h then
 --          print('Parsing ' .. name .. '.md')
@@ -168,7 +167,7 @@ local readMdMd = function(name, metadata)
             return {}
         else
             for l in h1:lines() do
-                for k, v in string.gmatch(l, "(%w+)%s*=%s*(.+)") do 
+                for k, v in l:gmatch'(%w+)%s*=%s*(.+)' do 
                     if nil == v then
                         print(name .. ' ' .. k)
                     else
@@ -190,8 +189,8 @@ local commonLinky = function(l, body, u, url, beg, en, beg0, en0, bump)
 --                  if nil ~= md then
                         if nil ~= md.realURL then url = md.realURL end
 --                  end
-                    body = string.sub(body, 1, beg - bump) .. url .. string.sub(body, en0 + 1)
-                    here = here + string.len(url)
+                    body = body:sub(1, beg - bump) .. url .. body:sub(en0 + 1)
+                    here = here + url:len()
                 end
                 if 1 == bump then
                     here = here + 1
@@ -204,6 +203,10 @@ end
 
 
 
+--[[
+]]
+
+
 ---------------------------------------------------------------------------------
 -- Actually start doing things.
 
@@ -217,7 +220,7 @@ end
 
 -- Scan the sub folders looking for our files.
 local Folder = arg[1]
-toSub('')
+toSub''
 if nil == Folder then Folder = '.' end
 --GlobalMetaData.root = Folder
 
@@ -233,12 +236,12 @@ if nil == Folder then Folder = '.' end
         A left over .md.md file should have a redirect .HTML page created for it.
 ]]
 for l in io.popen('find -L ' .. Folder .. ' -name unsorted -prune -o -name "*.md.md" -xtype l -printf "%P\n"'):lines() do
-    local metadata = readMdMd(string.sub(l, 1, -4), {})
+    local metadata = readMdMd(l:sub(1, -4), {})
     if nil == metadata.realURL then
-        metadata.realURL = string.sub(l, 1, -7)
+        metadata.realURL = l:sub(1, -7)
     else
-        if metadata.realURL ~= string.sub(l, 1, -7) then
-            metadata.realURL = string.sub(l, 1, -7)
+        if metadata.realURL ~= l:sub(1, -7) then
+            metadata.realURL = l:sub(1, -7)
             -- If this already exists, compare the timestamps, most recent wins.
             local time0 = io.popen('ls -l --time-style=+%s "' .. metadata.realURL .. '.md.md" | cut -d \' \' -f 6'):read('l')
             local time1 = io.popen('ls -l --time-style=+%s "' ..                l ..       '" | cut -d \' \' -f 6'):read('l')
@@ -263,7 +266,7 @@ for l in io.popen('find -L ' .. Folder .. ' -name unsorted -prune -o -name "*.md
     local tp = '_fos'
     local metadata = readMdMd(l, {})
     if nil ~= metadata then
-        if "PmWiki" == metadata.ogWiki then tp = '_pm' end
+        if 'PmWiki' == metadata.ogWiki then tp = '_pm' end
         if nil ~= metadata.ogFile then
             local unsort = 'unsorted/' .. metadata.ogFile
             local a, e = io.open(unsort .. tp .. '.md' , 'r')
@@ -274,10 +277,10 @@ for l in io.popen('find -L ' .. Folder .. ' -name unsorted -prune -o -name "*.md
                 os.execute('rm ' .. unsort .. tp .. '.md')
                 a, e = io.open(unsort .. tp .. '.HTML', 'w')
                 if nil == a then print('Could not open ' .. unsort .. tp .. '.HTML' .. ' - ' .. e) else
-                    local dst = string.sub(l, 1, -4) .. '.HTML'
+                    local dst = l:sub(1, -4) .. '.HTML'
                     local cnt = 1
                     for j = 1, #metadata.ogFile do
-                        if '/' == string.sub(metadata.ogFile, j, j) then cnt = cnt + 1 end
+                        if '/' == metadata.ogFile:sub(j, j) then cnt = cnt + 1 end
                     end
                     dst = string.rep('../', cnt) .. dst
                     a:write(
@@ -299,8 +302,8 @@ end
 -- Look for copied pages from the other wikis.
 for l in io.popen('find -L ' .. Folder .. ' -name "*.HTM" -type f,l -printf "%P\n"'):lines() do
 -- Only do this if .HTM is newer than .md, or .md doesn't exist.
-    local htime = io.popen("date -ur " ..            l ..           " +%s"):read('l')
-    local mtime = io.popen("date -ur " .. string.sub(l, 1, -4) .. "md +%s 2>/dev/null"):read('l')
+    local htime = io.popen('date -ur ' ..            l ..           ' +%s'):read('l')
+    local mtime = io.popen('date -ur ' .. l:sub(1, -4) .. 'md +%s 2>/dev/null'):read('l')
     if (nil == mtime) or (htime > mtime) then
         print('pandoc converting '  .. l .. ' -> ' .. string.sub(l, 1, -4) .. 'md')
 os.execute('cp ' .. l .. ' ' .. l .. '_ORIGINAL0')
@@ -309,20 +312,20 @@ os.execute('cp ' .. l .. ' ' .. l .. '_ORIGINAL0')
         if nil ~= h then
             local body = h:read('*a') ; h:close()
 writeString(l .. '_ORIGINAL1', body)
-            if 'Foswiki' == string.sub(l, 1, 7) then
+            if 'Foswiki' == l:sub(1, 7) then
                 -- Strip out the actual content.
-                local beg, en = RE.find(body, [['<div id="patternMainContents">']])     if nil ~= beg then body = string.sub(body, en + 1)  end
-                      beg, en = RE.find(body, [['<div class="patternContent">']])       if nil ~= beg then body = string.sub(body, en + 1)  end
+                local beg, en = RE.find(body, [['<div id="patternMainContents">']])     if nil ~= beg then body = body:sub(en + 1)  end
+                      beg, en = RE.find(body, [['<div class="patternContent">']])       if nil ~= beg then body = body:sub(en + 1)  end
                       beg, en = RE.find(body, [['<div class="foswikiTopic">']]) if nil ~= beg then
-                    if ' -- ' == string.sub(body, en + 1, en + 4) then
+                    if ' -- ' == body:sub(en + 1, en + 4) then
                         beg, en = RE.find(body, '[%nl]', en + 4)
-                        body = string.sub(body, en + 1)
+                        body = body:sub(en + 1)
                     end
                 end
-                      beg, en = RE.find(body, [['<div class="patternInfo">']])                                                  if nil ~= beg then body = string.sub(body, 1, beg - 1) end
---                    beg, en = RE.find(body, [['<div class="foswikiForm foswikiFormStep">']])                                  if nil ~= beg then body = string.sub(body, 1, en + 1) end
-                      beg, en = RE.find(body, [['<div class="foswikiAttachments foswikiFormStep" style="overflow:auto">']])             if nil ~= beg then body = string.sub(body, 1, beg - 1) end
-                      beg, en = RE.find(body, [['<div class="foswikiSearchResultsPager">']])                                    if nil ~= beg then body = string.sub(body, 1, beg - 1) end
+                      beg, en = RE.find(body, [['<div class="patternInfo">']])                                                  if nil ~= beg then body = body:sub(1, beg - 1) end
+--                    beg, en = RE.find(body, [['<div class="foswikiForm foswikiFormStep">']])                                  if nil ~= beg then body = body:sub(1, en + 1) end
+                      beg, en = RE.find(body, [['<div class="foswikiAttachments foswikiFormStep" style="overflow:auto">']])             if nil ~= beg then body = body:sub(1, beg - 1) end
+                      beg, en = RE.find(body, [['<div class="foswikiSearchResultsPager">']])                                    if nil ~= beg then body = body:sub(1, beg - 1) end
                 -- Some clean ups.
                 local result = RE.compile( [[{~
  (
@@ -346,17 +349,17 @@ writeString(l .. '_ORIGINAL1', body)
                     here = beg + 1
                     local beg0, en0
                     local url = nil
-                    if '"' == string.sub(body, beg - 1, beg - 1) then
+                    if '"' == body:sub(beg - 1, beg - 1) then
                         beg0, en0 = RE.find(body, [['"']], en)
-                        url = string.sub(body, en + 1, en0 - 1)
+                        url = body:sub(en + 1, en0 - 1)
                     end
-                    if "'" == string.sub(body, beg - 1, beg - 1) then
+                    if "'" == body:sub(beg - 1, beg - 1) then
                         beg0, en0 = RE.find(body, [["'"]], en)
-                        url = string.sub(body, en + 1, en0)
+                        url = body:sub(en + 1, en0)
                     end
 
                     if nil ~= url then
-                        if ('pub/' == string.sub(url, 1, 4)) then
+                        if ('pub/' == url:sub(1, 4)) then
 -- FIXME? - evil hack?
                             url = 'Foswiki/' .. url
 --print('FOSWIKI HTM ' .. url)
@@ -376,7 +379,7 @@ writeString(l .. '_ORIGINAL1', body)
 --                  if nil ~= md then
                         if nil ~= md.realURL then url = md.realURL end
 --                  end
-                    body = string.sub(body, 1, beg - 1) .. url .. string.sub(body, en0 + 1)
+                    body = body:sub(1, beg - 1) .. url .. body:sub(en0 + 1)
                     here = here + #url
                 end
                 beg, en = RE.find(body, [['https://fos.wiki.devuan.org/']], here)
@@ -384,12 +387,12 @@ writeString(l .. '_ORIGINAL1', body)
                 end
 
                 writeString(l .. '_NEW', body)
-            elseif 'PmWiki'  == string.sub(l, 1, 6) then
-                local beg, en = RE.find(body, [['<!--PageText-->']])    if nil ~= beg then body = string.sub(body, en + 2)  end
-                      beg, en = RE.find(body, [["div id='wikitext'>"]]) if nil ~= beg then body = string.sub(body, en + 2)  end
-                      beg, en = RE.find(body, [["<div id='printfoot'>"]])               if nil ~= beg then body = string.sub(body, 1, beg - (2 + 9)) end        -- There's a </div> to get rid of to.
-                      beg, en = RE.find(body, [['<!--HTMLFooter-->']])          if nil ~= beg then body = string.sub(body, 1, beg - 2) end
                 local result = RE.compile( [[{~
+            elseif 'PmWiki'  == l:sub(1, 6) then
+                local beg, en = RE.find(body, [['<!--PageText-->']])    if nil ~= beg then body = body:sub(en + 2)  end
+                      beg, en = RE.find(body, [["div id='wikitext'>"]]) if nil ~= beg then body = body:sub(en + 2)  end
+                      beg, en = RE.find(body, [["<div id='printfoot'>"]])               if nil ~= beg then body = body:sub(1, beg - (2 + 9)) end        -- There's a </div> to get rid of to.
+                      beg, en = RE.find(body, [['<!--HTMLFooter-->']])          if nil ~= beg then body = body:sub(1, beg - 2) end
  (
   {"class='categorylink'"}       -> blank /
   {"class='createlink'"}         -> blank /
@@ -425,11 +428,11 @@ writeString(l .. '_ORIGINAL1', body)
                     here = beg + 1
                     local beg0, en0 = RE.find(body, [["'"]], en)
 -- FIXME? - This might be working around a bug elsewhere.
-                    if "'" == string.sub(body, en0, en0) then en0 = en0 - 1 end
-                    local url = string.sub(body, en + 1, en0)
-                    if '?n=' == string.sub(url, 1, 3) then
-                        url = string.sub(url, 4):gsub('[%a]+%.([%a-]+)', '%1_pm.HTML')
-                    elseif ("'" == url) or ('uploads/' == string.sub(url, 1, 8)) then
+                    if "'" == body:sub(en0, en0) then en0 = en0 - 1 end
+                    local url = body:sub(en + 1, en0)
+                    if '?n=' == url:sub(1, 3) then
+                        url = url:sub(4):gsub('[%a]+%.([%a-]+)', '%1_pm.HTML')
+                    elseif ("'" == url) or ('uploads/' == url:sub(1, 8)) then
 -- FIXME - evil hack?  Yep, evil hack, need to know the depth of the source, which isn't here.
                         url = 'PmWiki/' .. url
                     else
@@ -444,19 +447,19 @@ writeString(l .. '_ORIGINAL1', body)
             end
         end
 
-        ok, rslt, status = os.execute('pandoc --wrap=preserve -f html -t commonmark_x --self-contained ' .. l .. '_NEW' .. ' >' .. string.sub(l, 1, -4) .. 'md')
+        os.execute('pandoc --wrap=preserve -f html -t commonmark_x --self-contained ' .. l .. '_NEW' .. ' >' .. l:sub(1, -4) .. 'md')
     end
 end
 
 if '.' ~= Folder then
     for l in io.popen('find -L . -name "*.md" -type f,l -printf "%P\n"'):lines() do
-        toFile(string.gsub(l, '%.md$', ''))
+        toFile(l:gsub('%.md$', ''))
     end
 end
 
 -- Can add in a distant folder to, for putting it's results in the current folder.
 for l in io.popen('find -L ' .. Folder .. ' -name "*.md" -type f,l -printf "%P\n"'):lines() do
-    local n = string.gsub(l, '%.md$', '')
+    local n = l:gsub('%.md$', '')
     if nil == Files[n] then toFile(n) end
 end
 
@@ -482,14 +485,14 @@ for name, file in pairs(Files) do
         end
     end
 
-    if '.md' == string.sub(name, -3, -1) then
+    if '.md' == name:sub(-3, -1) then
         -- This is a metadata only file, no content, stash the matadata.
 
         metadata = readMdMd(name, metadata)
         if '.md' == name                          then toSub(path, 'metadata', metadata)
-        elseif '/.md' == string.sub(name, -4, -1) then toSub(path, 'metadata', metadata)
---      else                                           toFile(string.sub(name, 1, -4), 'metadata', metadata)
-        else                                            NewMeta[string.sub(name, 1, -4)] = metadata     -- Coz we can't add to Files here.
+        elseif '/.md' == name:sub(-4, -1) then toSub(path, 'metadata', metadata)
+--      else                                           toFile(name:sub(1, -4), 'metadata', metadata)
+        else                                            NewMeta[name:sub(1, -4)] = metadata     -- Coz we can't add to Files here.
         end
         Files[name] = nil
     end
@@ -505,7 +508,7 @@ end
 
 -- Fix up subs now we have all the file bits.
 for name, file in pairs(Files) do
-    if '.md' ~= string.sub(name, -3, -1) then
+    if '.md' ~= name:sub(-3, -1) then
         table.insert(Subs[file.path].files, file.bit)
     end
 end
@@ -539,7 +542,7 @@ local whichPage = function(f)
                 -- Standard files to search for.
                 for i, v in ipairs{'about', 'readme', 'index', 'homepage', 'mainpage', 'webhome'} do
                     for j, w in ipairs(Subs[f].files) do
-                        if v == string.lower(w) then
+                        if v == w:lower() then
                             fl = w
                             break
                         end
@@ -631,7 +634,7 @@ for name, file in pairs(Files) do
     if ('everything' ~= name) then
         local ln, fw, pw, ts = 'DUNNO', '', '', ''
         local title, link = whichWiki(metadata)
-        link = string.gsub(link, 'https://', 'HTTPS://')        -- Prevent this one from being converted.
+        link = link:gsub('https://', 'HTTPS://')        -- Prevent this one from being converted.
         if 'PmWiki'  == metadata.ogWiki then pw = 'PmWiki  [' .. title .. '](' .. link .. ')' end
         if 'Foswiki' == metadata.ogWiki then fw = 'Foswiki [' .. title .. '](' .. link .. ')' end
         if nil       ~= metadata.timestamp then ts = metadata.timestamp end
@@ -647,7 +650,7 @@ for name, file in pairs(Files) do
         end
     end
 end
-table.sort(Pages, function(a, b) return (string.lower(a) < string.lower(b))  end)
+table.sort(Pages, function(a, b) return (a:lower() < b:lower())  end)
 for i, f in ipairs(Pages) do
     Bdy = Bdy .. f
 end
@@ -667,7 +670,7 @@ SUBS = {}
 for name, sub in pairs(Subs) do
     table.insert(SUBS, sub)
 end
-table.sort(SUBS, function(a, b) return (string.lower(a.path) < string.lower(b.path))  end)
+table.sort(SUBS, function(a, b) return (a.path:lower() < b.path:lower())  end)
 for n, sub in pairs(SUBS) do
     local name = sub.path
     sub.whichPage = whichPage(name)
@@ -746,51 +749,52 @@ local Writer = Lunamark.writer.html5.new(LunamarkOpts)
 local lunaLinky = function(url)         -- Fix up the links.
     if ('https://wiki.devuan.org/' ~= url) and ('https://fos.wiki.devuan.org/' ~= url) then
         -- TODO - This might be covering up a bug elsewhere.
-        if '/Main/' == string.sub(url, 1, 6) then
+        if '/Main/' == url:sub(1, 6) then
             local link = linkFrom(Context.path, 'Foswiki/Main')
             if '' == link then
-                url =                string.sub(url, 7) .. '.HTML'
+                url =                url:sub(7) .. '.HTML'
             else
-                url = link .. '/' .. string.sub(url, 7) .. '.HTML'
+                url = link .. '/' .. url:sub(7) .. '.HTML'
             end
         end
-        if '/System/' == string.sub(url, 1, 8) then
+        if '/System/' == url:sub(1, 8) then
             url = 'https://fos.wiki.devuan.org' .. url
         end
         for i, p in ipairs{'https://wiki.devuan.org/?n=', 'https://wiki.devuan.org?n=', 'PmWiki/uploads/', 'Foswiki/pub/', 'https://fos.wiki.devuan.org/'} do
-            if p == string.sub(url, 1, #p) then
-                local ur = string.sub(url, #p + 1)
+            if p == url:sub(1, #p) then
+                local ur = url:sub(#p + 1)
 -- TODO - could probably replace some of this mess with RE.gsub() and friends.  Meh, it works.
-                local f4, f5, tk1 = string.find(ur, '?', 1, true)
+                local f4, f5, tk1 = ur:find('?', 1, true)
                 if fail ~= f4 then
-                    local u = string.sub(ur, 1, f4 - 1)
+                    local u = ur:sub(1, f4 - 1)
                     ur = u
                 end
                 local md
-                if ('fos' == string.sub(p, 9, 11)) or ('Fos' == string.sub(p, 1, 3)) then
+
+                if ('fos' == p:sub(9, 11)) or ('Fos' == p:sub(1, 3)) then
                     md = readMdMd('Foswiki/' .. ur .. '.md', {})
                 else
-                    md = readMdMd('PmWiki/' .. string.gsub(ur, '%.', '/', 1) .. '.md', {})
+                    md = readMdMd('PmWiki/' .. ur:gsub('%.', '/', 1) .. '.md', {})
                 end
                 if (nil ~= md) and (nil ~= md.realURL) then     url = md.realURL end
 
-                if ('https://fos.wiki.devuan.org/bin/' ~= string.sub(url, 1, 32)) and ('https://fos.wiki.devuan.org/System/' ~= string.sub(url, 1, 35)) then
-                    local xlnk = xLinks[string.gsub(ur, '%..*', '', 1)]
+                if ('https://fos.wiki.devuan.org/bin/' ~= url:sub(1, 32)) and ('https://fos.wiki.devuan.org/System/' ~= url:sub(1, 35)) then
+                    local xlnk = xLinks[ur:gsub('%..*', '', 1)]
                     if nil == Context.path then
-                        url = string.gsub(ur, '%.', '/', 1)
+                        url = ur:gsub('%.', '/', 1)
                     else
-                        if nil == xlnk then xlnk = string.gsub(string.gsub(ur, '%..*', '', 1), '/.*', '', 1) end
+                        if nil == xlnk then xlnk = string.gsub(ur:gsub('%..*', '', 1), '/.*', '', 1) end
                         if '' ~= Context.path then xlnk = linkFrom(Context.path, xlnk) end
-                        if '/' == string.sub(xlnk, 1, 1) then xlnk = string.sub(xlnk, 2) end
-                        if ('' ~= xlnk) and ('/' ~= string.sub(xlnk, -1)) then xlnk = xlnk .. '/' end
                         if 'DUNNO/' == xlnk then print('OOPS! page not found - @' .. Context.path .. ' / ' .. Context.bit .. '\t' .. url .. ' -> ' .. xlnk .. ' ' .. string.gsub(ur, '.*%.', '', 1) .. '.HTML') end
+                        if '/' == xlnk:sub(1, 1) then xlnk = xlnk:sub(2) end
+                        if ('' ~= xlnk) and ('/' ~= xlnk:sub(-1)) then xlnk = xlnk .. '/' end
                     end
 --              if (nil ~= md) and (nil ~= md.realURL) then     url = md.realURL
 --              else
-                                                                url = xlnk .. string.gsub(ur, '.*%.', '', 1)
+                                                                url = xlnk .. ur:gsub('.*%.', '', 1)
 --              end
                     if 'PmWiki/uploads/' == p then
-                        url = '../../' .. p .. string.gsub(ur, '%.', '.', 1)
+                        url = '../../' .. p .. ur:gsub('%.', '.', 1)
                     elseif 'Foswiki/pub/' == p then
                         url = '../../' .. p .. ur
                     else
@@ -806,7 +810,7 @@ end
 function Writer.header(s, level)
     local text = Lunamark.util.rope_to_string(s)
 -- FIXME - Work around a bug in Lunamark?
-    text = RE.gsub(text, "{[\\]}", "")
+    text = RE.gsub(text, '{[\\]}', '')
     return '<h' .. level .. ' id="' .. RE.gsub(text, '{[ ]}', '_') .. '">' .. text .. ' <a style="font-size: 0.42em;" href="#top">🔼</a></h' .. level .. '>'
 end
 local OgWriterLink = Writer.link        -- So we can call the original from within mine, we are just changing the URL.
@@ -849,7 +853,7 @@ for name, file in pairs(Files) do
         for i, f in pairs(Subs[file.path].subs) do
             table.insert(subs, f)
         end
-        table.sort(subs, function(a, b) return (string.lower(a) < string.lower(b))  end)
+        table.sort(subs, function(a, b) return (a:lower() < b:lower())  end)
         for i, f in ipairs(subs) do
             local pth = file.path
             if '' ~= file.path then pth = file.path .. '/' end
@@ -861,7 +865,7 @@ for name, file in pairs(Files) do
         -- Figure out this pages menu links.
         metadata.menu = ''
         if nil == metadata.title then metadata.title = bit end
-        if nil ~= Subs[file.path].files then table.sort(Subs[file.path].files, function(a, b) return (string.lower(a) < string.lower(b))  end)  end
+        if nil ~= Subs[file.path].files then table.sort(Subs[file.path].files, function(a, b) return (a:lower() < b:lower())  end)  end
         for i, f in ipairs(Subs[file.path].files) do
             local title, url = nil, nil
             if '' == file.path then
@@ -872,15 +876,17 @@ for name, file in pairs(Files) do
                 url   = Files[file.path .. '/' .. f].metadata.URL
             end
             if nil == title then title = f end
+
+
             if bit == f then
                                         metadata.menu = metadata.menu .. '<p>' .. title .. '</p>'
                 for j, g in ipairs(file.headers) do
                         local beg, en = RE.find(g, [['{']])
                         if nil ~= beg then
-                            g = string.sub(g, 1, beg - 2)
+                            g = g:sub(1, beg - 2)
                         end
                     local h = string.sub(RE.gsub(g, '{[#]}', ''), 2)
-                    local l = string.len(g) - string.len(h)
+                    local l = g:len() - h:len()
                     g = h
                     h = RE.gsub(h, '{[ ]}', '&nbsp;')
 -- FIXME - Work around a bug in Lunamark?
@@ -922,7 +928,7 @@ for name, file in pairs(Files) do
         -- Add a link to the original page.
         if nil ~= metadata.ogURL then
             local title, link = whichWiki(metadata)
-            link = string.gsub(link, 'https://', 'HTTPS://')    -- Prevent this one from being converted.
+            link = link:gsub('https://', 'HTTPS://')    -- Prevent this one from being converted.
 -- TODO - wrap "edit" in a link to actually edit it. PmWiki "?action=edit"  Foswiki "https://fos.wiki.devuan.org/bit/edit/" .. page .. "?t=" .. 10 digit random number?
             local edit = 'T'
             if 'PmWiki'  == metadata.ogWiki then edit = 'Maybe you can <a href="' .. link .. '?action=edit">edit</a> t' end
@@ -944,7 +950,7 @@ for name, file in pairs(Files) do
         result = RE.compile ('{~ ({[$][A-Za-z_]+[$]} -> meta / .)* ~}',
         {
             meta = function(a)
-                a = string.sub(a, 2, -2)
+                a = a:sub(2, -2)
                 local md = metadata[a]
                 if nil == md then
                     md = GlobalMetaData[a]