-- This module implements [[Template:IPAc-en]].  local data = mw.loadData('Module:IPAc-en/data') local p = {}  -- Global container for tracking categories local categoryHandler = require('Module:Category handler').main local categories = {}  -- Trims whitespace from a string local function trim(s)  return s:match('^%s*(.-)%s*$') end  -- This implements [[Template:Nowrap]]. local function makeNowrapSpan(s)  local span = mw.html.create('span')  :addClass('rt-commentedText') -- Works with [[MediaWiki:Gadget-ReferenceTooltips.js]]  :addClass('nowrap')  :wikitext(s)  return tostring(span) end  local function makePronunciationText(id)  id = id and string.lower(trim(id))  if id and id ~= '' and data.pronunciation[id] then  return data.pronunciation[id].text  end end  -- This adds a tooltip icon to a label. It implements [[Template:H:title]]. local function makeTooltip(label, tooltip)  local span = mw.html.create('span')  :attr('title', tooltip)  :wikitext(label)  return tostring(span) end  local function formatPhonemeGroup(phonemes)  if #phonemes > 0 then  local span = mw.html.create('span')  :css('border-bottom', '1px dotted')  :wikitext(table.concat(phonemes))  return tostring(span)  else  return ''  end end  local function renderCategories()  local ret = ''   if categoryHandler{ true } then  ret = {}  for cat in pairs(categories) do  table.insert(ret, string.format('[[Category:%s]]', cat))  end  table.sort(ret)  ret = table.concat(ret)  else  ret = ''  end  return ret end  function p._main(args)  local ret = {}  local i = 0 -- Keeps track of numbered args   -- Pronunciation  do  local pron = {}  while true do  i = i + 1  local pronItem = makePronunciationText(args[i])  if pronItem then  pron[#pron + 1] = pronItem  pron[#pron + 1] = ' '  else  break  end  end  if #pron > 0 then  ret[#ret + 1] = string.format(  '<small>%s</small>',  table.concat(pron)  )  end  end   -- Phonemes  do  -- Loop through the numbered args, separating them into phoneme groups  -- and separator strings (both called "words" for convenience). We only  -- underline the phoneme groups, not the separators.  local words = {}  words[#words + 1] = '/' -- Opening slash  i = i - 1 -- Set up i again as it was changed in the pronunciation loop  local id  repeat  local phonemes = {}  local isWordEnd = false  while not isWordEnd do  i = i + 1  id = args[i]  id = id and trim(id)  if not id then  isWordEnd = true  words[#words + 1] = formatPhonemeGroup(phonemes)  elseif id ~= '' then  local t = data.phonemes[id]  if not t then  -- We were passed an invalid id.  isWordEnd = true  categories["Ill-formatted IPAc-en transclusions"] = true  words[#words + 1] = formatPhonemeGroup(phonemes)  words[#words + 1] = makeTooltip(  string.format(  "<strong class=\"error\">[invalid input: '%s']</strong>",  id  ),  'Unrecognized symbol'  )  elseif not t.label then  -- The data module contains bad data, so throw an error.  error(string.format(  "no label was found for id '%s'",  tostring(id)  ))  elseif t.tooltip then  -- We are dealing with a regular phoneme.  phonemes[#phonemes + 1] = makeTooltip(  t.label,  t.tooltip  )  else  -- We are dealing with a separator.  isWordEnd = true  words[#words + 1] = formatPhonemeGroup(phonemes)  words[#words + 1] = t.label  end  end  end  until not id  words[#words + 1] = '/' -- Closing slash   -- Wrap the words in a link to IPA help.  local span = mw.html.create('span')  -- Suppress Navigation popups and Page Previews (aka Hovercards)  :addClass('IPA nopopups noexcerpt')  :wikitext(string.format(  '[[สัทอักษรสากล|%s]]',  table.concat(words)  ))   ret[#ret + 1] = tostring(span)  end   -- Audio link  do  local file = args.audio and trim(args.audio)  if file and file ~= '' then  categories["Pages including recorded pronunciations"] = true  ret[#ret + 1] = mw.getCurrentFrame():expandTemplate{  title = 'Template:IPA audio link', args = { file, attribution = args.attribution } }  end  end   -- Nowrap and categories  ret = makeNowrapSpan(table.concat(ret)) .. renderCategories()   -- Reset the categories table in case we are run again.  categories = {}   return ret end  function p.main(frame)  return p._main(frame:getParent().args) end  return p