A bug in bash

[Nikolay B. Malyshev]

beetle{mal}5: bash
bash-2.05$ if [ ! -f /usr/bin/mailx ] ; then alias mailx=mail; fi; type mailx
mailx is aliased to `mail'
bash-2.05$  exit
exit
beetle{mal}6: bash
bash-2.05$ type mailx
bash: type: mailx: not found
bash-2.05$ if [ ! -f /usr/bin/mailx ] ; then alias mailx=mail; fi; echo kjljl | 
mailx
bash: mailx: command not found # . . . . . . . . . ! ! ! ! ! ! ! ! ! ! ! ! ! ! 
! !


bash-2.05$ type mailx
mailx is aliased to `mail'
bash-2.05$ uname -a
Linux beetle 2.4.18 #11 Thu Oct 2 11:24:03 MSD 2003 i686 unknown
bash-2.05$ ls -l /usr/bin/mailx
ls: /usr/bin/mailx: No such file or directory
bash-2.05$ type mail
mail is /bin/mail