How do i make syntax highlighting?

Hello! I'm making a programming language in lua, i searched for this so i can make my own syntax highlighting, but i didn't find anything. Is there any article or doc that talks about this? Since roblox studio does that and lua learning has that implemented too.

Help is appreciated!

So, to make Lua Syntax is kinda easy. You need to use gsub and string patterns to make syntax.

Keywords:

local str = "script."
local Ingore =
      {
            ["="] = true,
            ["."] = true,
            [","] = true,
            ["("] = true,
            [")"] = true,
            ["["] = true,
            ["]"] = true,
            ["{"] = true,
            ["}"] = true,
            [":"] = true,
            ["*"] = true,
            ["/"] = true,
            ["+"] = true,
            ["-"] = true,
            ["%"] = true,
            [";"] = true,
            ["~"] = true
      }
local highlight = ""
str = string.gsub(str,'\46',function(c)
      if Ingore[c] then
            return " "
      else
            return c
      end
end)
highlight = string.gsub(str,'%\83+',function(c)
      if c == "script" then
            return "script"
      else
            return (' '):rep(#c)
      end
end)
print(highlight)

String:

local str = '"fisi"\n"s"'
local boolean = false
local highlight = ""
str:gsub('\46',function(c)
	if c == '"' and boolean == false then
		boolean = true
	elseif boolean == true and c == '"' then
		boolean = false
	end
	if boolean == true and  c ~= '"' then
	highlight = highlight .. c
	end
	if boolean == false and c == '"' then
	elseif c == "\n" and boolean == false then
		highlight = highlight .. "\n"
	elseif c == "\t" and boolean == false  then
		highlight = highlight .. "\t"
	elseif boolean == false  then
		highlight = highlight .. " "
	end
end)