fmt_with_err: add a comment that truncation is OK

diff --git a/usage.c b/usage.c
index cdd534c9dfc4bd38ce112da62643ab2dc7b4fbe9..b3c78931ad9f68f45f78253c64abe9416b3971b3 100644 (file)
--- a/usage.c
+++ b/usage.c
@@ -148,6 +148,7 @@ static const char *fmt_with_err(char *buf, int n, const char *fmt)
                }
        }
        str_error[j] = 0;
+       /* Truncation is acceptable here */
        snprintf(buf, n, "%s: %s", fmt, str_error);
        return buf;
 }