1 files changed, 23 insertions, 1 deletions
diff --git a/builtin.c b/builtin.c
index 1b612f4a..afdb747b 100644
--- a/builtin.c
+++ b/builtin.c
@@ -2924,6 +2924,10 @@ do_sub(int nargs, unsigned int flags)
 		}
 	}
 
+	if ((target->flags & BOOL) != 0)
+		fatal(_("%s: target cannot be of type bool"),
+			(flags & GSUB) != 0 ? "gsub" : "sub");
+
 	global = (how_many == -1);
 
 	rep_node = POP_STRING();	/* replacement text */
@@ -4112,7 +4116,10 @@ do_typeof(int nargs)
 		}
 		break;
 	case Node_val:
-		switch (fixtype(arg)->flags & (STRING|NUMBER|USER_INPUT|REGEX)) {
+		switch (fixtype(arg)->flags & (STRING|NUMBER|USER_INPUT|REGEX|BOOL)) {
+		case NUMBER|BOOL:
+			res = "number|bool";
+			break;
 		case NUMBER:
 			res = "number";
 			break;
@@ -4321,3 +4328,18 @@ check_symtab_functab(NODE *dest, const char *fname, const char *msg)
 	else if (dest == func_table)
 		fatal(msg, fname, "FUNCTAB");
 }
+
+/* do_mkbool --- create boolean values */
+
+NODE *
+do_mkbool(int nargs)
+{
+	NODE *tmp;
+	bool result;
+
+	tmp = POP_SCALAR();
+	result = boolval(tmp);
+	DEREF(tmp);
+
+	return make_bool_node(result);
+}