vi: make "g<key>" error message less likely to show garbage

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/editors/vi.c b/editors/vi.c
index 974f9978b..c142dacd7 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -3933,7 +3933,9 @@ static void do_cmd(int c)
                 c1 = get_one_char();
                 if (c1 != 'g') {
                         buf[0] = 'g';
-                        buf[1] = c1; // TODO: if Unicode?
+                        // c1 < 0 if the key was special. Try "g<up-arrow>"
+                        // TODO: if Unicode?
+                        buf[1] = (c1 >= 0 ? c1 : '*');
                         buf[2] = '\0';
                         not_implemented(buf);
                         break;