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-rw-r--r--src/mkbuiltins3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/mkbuiltins b/src/mkbuiltins
index 424d59a..977edb4 100644
--- a/src/mkbuiltins
+++ b/src/mkbuiltins
@@ -71,7 +71,8 @@ awk '{	for (i = 2 ; i <= NF ; i++) {
 			opt = substr($2, 2)
 			$2 = $3
 		}
-		printf "\t{ \"%s\", %s, %d },\n", $1, $2,
+		printf "\t{ \"%s\", %s, %d },\n", $1,
+			(opt ~ /n/) ? "NULL" : $2,
 			(opt ~ /s/) + (opt ~ /[su]/) * 2 + (opt ~ /a/) * 4
 	}'
 echo '};'