all: add optional args

parser/parser.go

@@ -94,16 +94,16 @@ func parseValue(input []string) (*ast.AST, error, []string) {
 
 	if input[0][0] == '~' {
 		fn := ast.AST{ast.Symbol, input[0][1:]}
-    complement := ast.AST{ast.Symbol, "complement"}
+		complement := ast.AST{ast.Symbol, "complement"}
 		res = ast.AST{ast.List, []*ast.AST{&complement, &fn}}
 		return &res, nil, input[1:]
 	}
 
 	if strings.Contains(input[0], ":") {
-    comp := ast.AST{ast.Symbol, "compose"}
+		comp := ast.AST{ast.Symbol, "compose"}
 		fns := []*ast.AST{&comp}
 		for _, fn := range strings.Split(input[0], ":") {
-      astfn := ast.AST{ast.Symbol, fn}
+			astfn := ast.AST{ast.Symbol, fn}
 			fns = append(fns, &astfn)
 		}
 		res = ast.AST{ast.List, fns}
@@ -116,9 +116,9 @@ func parseValue(input []string) (*ast.AST, error, []string) {
 
 func makeFn(bodyStatements []*ast.AST) ast.AST {
 	body := ast.AST{ast.List, bodyStatements}
-  underscore := ast.AST{ast.Symbol, "_"}
+	underscore := ast.AST{ast.Symbol, "_"}
 	args := ast.AST{ast.List, []*ast.AST{&underscore}}
-  fn := ast.AST{ast.Symbol, "fn"}
+	fn := ast.AST{ast.Symbol, "fn"}
 
 	return ast.AST{ast.List, []*ast.AST{&fn, &args, &body}}
 }
@@ -140,7 +140,7 @@ func parseToken(input []string) (*ast.AST, error, []string) {
 			return nil, err, input
 		}
 
-    quote := ast.AST{ast.Symbol, "quote"}
+		quote := ast.AST{ast.Symbol, "quote"}
 		res := ast.AST{ast.List, []*ast.AST{&quote, tmp}}
 		return &res, nil, input
 	}