* archival/gzip.c (gzip_main): Ensure that the output is a terminal and use

  error_msg to display the error message.

diff --git a/archival/gzip.c b/archival/gzip.c
index fed93907bdab8ea02488b7b848839e487b61cff0..44b5fe386251e981d0f4e807776b1635fdf9cbed 100644 (file)
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -1312,8 +1312,8 @@ int gzip_main(int argc, char **argv)
                                        outFileNum = STDOUT_FILENO;
                        }
 
-                       if (path == NULL && force == 0) {
-                               perror_msg("compressed data not written to a terminal. Use -f to force compression.");
+                       if (path == NULL && isatty(outFileNum) && force == 0) {
+                               error_msg("compressed data not written to a terminal. Use -f to force compression.");
                                free(path);
                                continue;
                        }