Following original style, and adding back something I accidentally deleted.

Author: Vortex-scripts

src/prometheus/enums.lua

@@ -65,7 +65,7 @@ Enums.Conventions = {
 			"repeat", "return", "then", "true", "until", "while"
 		},
 
-		SymbolChars = chararray("+-*/%^#=~<>(){}[];:,.`"),
+		SymbolChars = chararray("+-*/%^#=~<>(){}[];:,."),
 		MaxSymbolLength = 3,
 		Symbols = {
 			"+", "-", "*", "/", "%", "^", "#",

src/prometheus/parser.lua

@@ -322,7 +322,6 @@ function Parser:statement(scope, currentLoop)
 
 		-- Local Variable Declaration
 		local ids = self:nameList(scope);
-
 		local expressions = {};
 		if(consume(self, TokenKind.Symbol, "=")) then
 			expressions = self:exprList(scope);
@@ -549,6 +548,11 @@ function Parser:funcName(scope)
 		table.insert(indices, expect(self, TokenKind.Ident).value);
 	end
 
+	if(consume(self, TokenKind.Symbol, ":")) then
+		table.insert(indices, expect(self, TokenKind.Ident).value);
+		passSelf = true;
+	end
+
 	return {
 		scope = baseScope,
 		id = baseId,

src/prometheus/unparser.lua

@@ -684,11 +684,14 @@ function Unparser:unparseExpression(expression, tabbing)
 	if (self.luaVersion == LuaVersion.LuaU) then
 		k = AstKind.IfElseExpression
 		if(expression.kind == k) then
-			local expr = self:unparseExpression(expression.condition)
-			local trueexpr = self:unparseExpression(expression.true_value)
-			push("if ", expr, " then ", trueexpr);
+			push(self:unparseExpression(expression.condition));
+			push(" then ")
+			push(self:unparseExpression(expression.true_value))
 			for _, elseifexp in pairs(expression.elseifs) do
-				push(" elseif ", self:unparseExpression(elseifexp.condition), " then ", self:unparseExpression(elseifexp.value))
+				push(" elseif ")
+				push(self:unparseExpression(elseifexp.condition))
+				push(" then ")
+				push(self:unparseExpression(elseifexp.value))
 			end
 			push(" else ");
 			push(self:unparseExpression(expression.false_value));