1 files changed, 16 insertions, 5 deletions

diff --git a/ssh-keygen.c b/ssh-keygen.c
index 3898b281e..db371090d 100644
--- a/ssh-keygen.c
+++ b/ssh-keygen.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-keygen.c,v 1.329 2019/03/25 16:19:44 dtucker Exp $ */
+/* $OpenBSD: ssh-keygen.c,v 1.330 2019/05/29 08:30:26 lum Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1488,14 +1488,14 @@ do_change_comment(struct passwd *pw, const char *identity_comment)
                 exit(1);
         }
         if (comment)
-                printf("Key now has comment '%s'\n", comment);
+                printf("Old comment: %s\n", comment);
         else
-                printf("Key now has no comment\n");
+                printf("No existing comment\n");
 
         if (identity_comment) {
                 strlcpy(new_comment, identity_comment, sizeof(new_comment));
         } else {
-                printf("Enter new comment: ");
+                printf("New comment: ");
                 fflush(stdout);
                 if (!fgets(new_comment, sizeof(new_comment), stdin)) {
                         explicit_bzero(passphrase, strlen(passphrase));
@@ -1504,6 +1504,13 @@ do_change_comment(struct passwd *pw, const char *identity_comment)
                 }
                 new_comment[strcspn(new_comment, "\n")] = '\0';
         }
+        if (comment != NULL && strcmp(comment, new_comment) == 0) {
+                printf("No change to comment\n");
+                free(passphrase);
+                sshkey_free(private);
+                free(comment);
+                exit(0);
+        }
 
         /* Save the file using the new passphrase. */
         if ((r = sshkey_save_private(private, identity_file, passphrase,
@@ -1537,7 +1544,11 @@ do_change_comment(struct passwd *pw, const char *identity_comment)
 
         free(comment);
 
-        printf("The comment in your key file has been changed.\n");
+        if (strlen(new_comment) > 0)
+                printf("Comment '%s' applied\n", new_comment);
+        else
+                printf("Comment removed\n");
+
         exit(0);
 }