1 files changed, 1 insertions, 0 deletions

diff --git a/filter.c b/filter.c

index 8fc14e1..0bcd5d7 100644
--- a/filter.c
+++ b/filter.c
@@ -51,6 +51,7 @@ static int open_exec_filter(struct cgit_filter *base, va_list ap)
 		close(pipe_fh[1]);
 		chk_non_negative(dup2(pipe_fh[0], STDIN_FILENO),
 			"Unable to use pipe as STDIN");
+		fprintf(stderr, "exec: %s\n", filter->cmd);
 		execvp(filter->cmd, filter->argv);
 		die_errno("Unable to exec subprocess %s", filter->cmd);
 	}