Fix damage-roll parsing of math functions when first argument is 0 (f…

…oundryvtt#6644)
mose · Feb 27, 2023 · 033a3ab · 033a3ab
1 parent 03d24b6
commit 033a3ab
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/roll-grammar.peggy b/roll-grammar.peggy
@@ -52,7 +52,7 @@ Term = head:TermOperand tail:(_ ("*" / "/") _ TermOperand)* {
 TermOperand = DiceTerm / MathTerm / Grouping / FlavoredNumber / Number;
 
 MathTerm = fn:Identifier "(" _ head:Expression? _ tail:(_ "," _ @Expression)* _ ")" {
-  const terms = head
+  const terms = head !== null
     ? [head, ...tail].map((t) => typeof t === "number" ? t.toString() : t.formula)
     : [];
   return {