Article View: comp.bugs.sys5
Article #95Re: ksh bug on function aliasing
From: scott.thompson
Date: Wed, 06 Sep 1989 17:19
Date: Wed, 06 Sep 1989 17:19
28 lines
1493 bytes
1493 bytes
From article <776@tuminfo1.lan.informatik.tu-muenchen.dbp.de>, by schmauss@lan.informatik.tu-muenchen.dbp.de (Oin):
> Here is a bug I've found in ksh @(#)Version 06/03/86.
> I declared a function chdir() for the shell builtin cd and
> aliased cd to be chdir() ( see script below for details ).
> Now have a look at the following two different behaviours of ksh:
>
... example deleted ...
>
This is not a bug, as a matter of fact it is documented; aliases are
expanded at the time of function DEFINITION.
By the way ksh will expand the $PWD environment variable in PS1
automagically, no need for the function. I believe this is supported in
the version you are using, just postpone the evaluation of the
appropriate variable, namely $PWD:
PS1="\${PWD} ! \$ "
PS2="\${PWD} >>> "
Also, you don't need to unalias cd within the chdir function, just place
it in single quotes. ie:
'cd' $*
--
Scott Thompson (IH 6W-207), AT&T Bell Labs, Naperville, Il. 60566
VOICE: (312)-979-2237 UUCP: ...!att!ihlpa!sft
Technical Details
Message-ID:
<2958@cbnewsc.ATT.COM>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!ginosko!usc!apple!sun-barr!rutgers!dptg!att!cbnewsc!sftReferences:
<776@tuminfo1.lan.informatik.tu-muenchen.dbp.de>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!ginosko!usc!apple!sun-barr!rutgers!dptg!att!cbnewsc!sft From: sft@cbnewsc.ATT.COM (scott.thompson) Newsgroups: comp.bugs.sys5 Subject: Re: ksh bug on function aliasing Message-ID: <2958@cbnewsc.ATT.COM> Date: 6 Sep 89 17:19:51 GMT References: <776@tuminfo1.lan.informatik.tu-muenchen.dbp.de> Organization: AT&T Bell Laboratories Lines: 28