Syntax highlighting not working on symbols

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#1

So im trying to make syntax highlighting for my programming language (yes im making a programming language in roblox studio lol)

Ive been trying to figure out why this is happening for a while,
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As you can see the syntax highlighting works correctly on words
But on every symbol ive tried it just does nothing at all, I know this is a gsub issue most likely, but does anyone know why this is happening?

Code:

local keywords = {
    ["declare"] = "135,206,250",
    ["yell"] = "135,206,250",
    ["+"] = "255,140,0",
    ["="] = "255,0,0",
    ["["] = "75,0,130",
    ["]"] = "75,0,130",
    ["("] = "238,130,238",
    [")"] = "238,130,238",
    [","] = "255,215,0",
    ["-"] = "255,140,0",
    ["*"] = "255,140,0",
    ["/"] = "255,140,0",
    ["Random"] = "0,255,255",
    ["true"] = "255,215,0",
    ["false"] = "255,215,0",
}

local function insertHighlights(txt)
	txt = txt:gsub("<", "&lt;"):gsub(">", "&gt;")
	txt = txt:gsub("</font>", ""):gsub("<font.->", "")
	txt = " " .. txt .. " "

	for i, v in pairs(keywords) do
		-- Escape patterns and ensure only whole keywords are matched
		local pattern = "%f[%w_]" .. i:gsub("%W", "%%%1") .. "%f[%W_]"
		txt = txt:gsub(pattern, function(x)
			return '<font color="rgb(' .. v .. ')">' .. x .. '</font>'
		end)
	end

	txt = txt:gsub("%%SLASH%%", "/")

	return txt:sub(2, #txt - 1)
end

(and yes theres more syntax in the language this is just what is being effected mainly)

#2

in your keywords, try adding % before each of the symbols. It’s basically the equivalent of using \ in other applications

#3

Nah didnt work, its just ignoring the %