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-rw-r--r--src/error.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/error.c b/src/error.c
index 338243d..7f165c1 100644
--- a/src/error.c
+++ b/src/error.c
@@ -122,7 +122,7 @@ exvwarning2(const char *msg, va_list ap)
 	const char *fmt;
 
 	errs = out2;
-	name = arg0;
+	name = arg0 ?: "sh";
 	fmt = "%s: ";
 	if (commandname) {
 		name = commandname;