It is the copy command that is abbreviated as 'c', not chdir.

Also document that cd is an alias for chdir.  From Kaspars Bankovskis.

diff --git a/usr.bin/mail/mail.1 b/usr.bin/mail/mail.1
index 1fb4d7e..8a03875 100644 (file)
--- a/usr.bin/mail/mail.1
+++ b/usr.bin/mail/mail.1
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: mail.1,v 1.71 2015/01/07 17:01:39 millert Exp $
+.\"    $OpenBSD: mail.1,v 1.72 2015/01/07 17:08:21 millert Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -424,12 +424,14 @@ If the
 command is given with no argument, the current set of alternate
 names is displayed.
 .It Ic chdir
-.Pq Ic c
+.Pf ( Ic cd
+or
+.Ic ch )
 Changes the user's working directory to that specified, if given.
 If
 no directory is given, then changes to the user's login directory.
 .It Ic copy
-.Pq Ic co
+.Pq Ic c
 The
 .Ic copy
 command does the same thing that