csh/tcsh: odd %~ prompt variable behaviour

[Galati, Michael]

Looks like it could be FreeBSD specific...  I very rarely use {,t}csh
myself.

user at host:~$ uname -a
Linux host 3.5.0-23-generic #35-Ubuntu SMP Thu Jan 24 13:15:40 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
user at host:~$ sudo -i
[sudo] password for user:
root at host:~# tcsh
host:~# set prompt = "%N@%m:%~ %# "
root at host:~ # asdfasdf
asdfasdf: Command not found.
root at host:~ # cd ~user
root at host:~user # asdfasdf
asdfasdf: Command not found.
root at host:~user # exit
root at host:~# logout



On Tue, Feb 5, 2013 at 5:10 PM, Jeremy Chadwick <jdc at koitsu.org> wrote:

> (Please keep me CC'd as I'm not subscribed to the list)
>
>
> System is base/stable/9, r245697.  tcsh version is 6.18.01:
>
> $ sudo -i
> root at icarus:~ # sfdjsdj
> sfdjsdj: Command not found.
> root at icarus:~ # cd ~root
> root at icarus:~ # dsjfdsfdsf
> dsjfdsfdsf: Command not found.
> root at icarus:~ # cd ~jdc
> root at icarus:~jdc # sdjfdjkfjdsk
> sdjfdjkfjdsk: Command not found.
> root at icarus:/home/jdc #             <---- notice sudden prompt change
> root at icarus:/home/jdc # cd ~root
> root at icarus:~ # dsfjjdskdfs
> dsfjjdskdfs: Command not found.
> root at icarus:~ # logout
>
> This only happens when an invalid command is issued (e.g. had I used
> "ls" instead of "blah" the prompt would not have changed).
>
> $prompt is the standard /root/.cshrc (r244005) value:
>
>         set prompt = "%N@%m:%~ %# "
>
> I cannot reproduce this problem on Debian 6.0.1 with tcsh 6.17.02:
>
> $ ssh jdc at 192.168.1.161
> Linux debian 2.6.32-5-686 #1 SMP Sun Sep 23 09:49:36 UTC 2012 i686
>
> Last login: Tue Feb  3 19:22:19 2013 from icarus.home.lan
> jdc at debian:~$ sudo -i
> root at debian:~# /bin/tcsh
> debian:~# set prompt = "%N@%m:%~ %# "
> root at debian:~ # sdfsdf
> sdfsdf: Command not found.
> root at debian:~ # cd ~jdc
> root at debian:~jdc # sdfssgsgjsj
> sdfssgsgjsj: Command not found.
> root at debian:~jdc # exit
> root at debian:~# logout
>
> The number of changes between 6.17.02 and 6.18.01 seem quite large
> (looking at src/contrib/tcsh/Fixes).
>
> Does anyone have a non-FreeBSD system with tcsh 6.18.01 available
> to determine if this is a FreeBSD-centric issue or an actual issue with
> tcsh that needs to be reported upstream?
>
> Thanks.
>
> --
> | Jeremy Chadwick                                   jdc at koitsu.org |
> | UNIX Systems Administrator                http://jdc.koitsu.org/ |
> | Mountain View, CA, US                                            |
> | Making life hard for others since 1977.             PGP 4BD6C0CB |
>
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