parens can take spacebreaks on the insides of either side

moonscript/parse.lua

@@ -216,6 +216,7 @@ local function sym(chars)
 	return Space * chars
 end
 
+-- Like sym but doesn't accept whitespace in front
 local function symx(chars)
 	return chars
 end
@@ -482,9 +483,9 @@ local build_grammar = wrap_env(function()
 		LuaStringClose = "]" * P"="^0 * "]",
 
 		Callable = pos(Name / mark"ref") + SelfName + VarArg + Parens / mark"parens",
-		Parens = sym"(" * Exp * sym")",
+		Parens = sym"(" * SpaceBreak^0 * Exp * SpaceBreak^0 * sym")",
 
-		FnArgs = symx"(" * Ct(ExpList^-1) * sym")" + sym"!" * -P"=" * Ct"",
+		FnArgs = symx"(" * SpaceBreak^0 * Ct(ExpList^-1) * SpaceBreak^0 * sym")" + sym"!" * -P"=" * Ct"",
 
 		ChainTail = ChainItem^1 * ColonSuffix^-1 + ColonSuffix,
 

spec/inputs/operators.moon

@@ -1,5 +1,5 @@
 
---
+-- binary ops
 x = 1 + 3
 
 y = 1 +
@@ -46,5 +46,27 @@ v = {
     ->
       "yeah"
     "great"
+  oksy: 3 ^
+2
 }
 
+-- parens
+
+nno = (
+  yeah + 2   )
+
+nn = (
+  yeah + 2
+)
+
+n = hello(
+  b
+) ->
+
+hello a,
+  (
+    yeah +
+      2
+  ) -
+    okay
+

spec/outputs/operators.lua

@@ -20,5 +20,10 @@ local v = {
   color = 1 and function()
     return "yeah"
   end,
-  "great"
-}
+  "great",
+  oksy = 3 ^ 2
+}
+local nno = (yeah + 2)
+local nn = (yeah + 2)
+local n = hello(b)(function() end)
+return hello(a, (yeah + 2) - okay)