Make textadept pretty

properties.lua

--- holds languages NOT to use semantic highlighting if semantic is on.
-- @param `language = true`: language being any one you choose.
local dont = {
  perl = true,
  yaml = true,
  markdown = true,
}

-- enable semantic highlighting
_SEMANATIC = true

-- semantic highlighting. NEED base16 themes to work!
events.connect(events.LEXER_LOADED, function (lang)
  if _SEMANATIC == false then return end
  if dont[lang] then return end

  buffer.edge_colour = buffer.property_int["color.base0A"]

  buffer.property[‘style.operator’]   = ‘fore:%(color.base0F)’
  buffer.property[‘style.function’]   = ‘fore:%(color.base08)’
  buffer.property[‘style.library’]    = ‘fore:%(color.base09)’
  buffer.property[‘style.identifier’] = ‘fore:%(color.base0D)’
  buffer.property[‘style.number’]     = ‘fore:%(color.base0E)’
  buffer.property[‘style.constant’]   = ‘fore:%(color.base0A)’

  buffer.property[‘style.keyword’]    = ‘fore:%(color.base05)’
end)

Textadept 8.7 (the JIT version) gives the error:

init.lua:19: '' expected near '%'

You're using unusual single quotes.
I replaced all of them with ' ', then it worked.