Improve error message for in expression

`"abc" in nil` now says that the second operand could also be a string
PlutoLang · Feb 10, 2025 · e961a16 · e961a16
1 parent c668d1b
commit e961a16
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/lvm.cpp b/src/lvm.cpp
@@ -869,7 +869,10 @@ static void inopr (lua_State *L, StkId ra, TValue *a, TValue *b) {
     }
   } else {
     if (l_unlikely(!ttistable(b))) {
-      luaG_runerror(L, "expected second 'in' operand to be table, got %s", ttypename(ttype(b)));
+      if (ttisstring(a))
+        luaG_runerror(L, "expected second 'in' operand to be table or string, got %s", ttypename(ttype(b)));
+      else
+        luaG_runerror(L, "expected second 'in' operand to be table, got %s", ttypename(ttype(b)));
     } else {
       if (luaV_searchelement(L, hvalue(b), a)) {
         setbtvalue(s2v(ra));