Re: [bug] Home dir in PS1 not abbreviated to tilde

[Clark J. Wang]

On Mon, Mar 12, 2012 at 12:22, Yongzhi Pan <panyongzhi@gmail.com> wrote:

> Tested in GNU bash, version 3.00.16(1)-release and 4.1.2(1)-release.
>
> Upon login, home dir is displayed as tilde in PS1:
> pan@BJ-APN-2 ~$ echo $PS1
> \[\033[35m\]\u@\h \w$ \[\033[0m\]
> pan@BJ-APN-2 ~$ pwd
> /export/home/pan/
>
> After a cd command, which change directory to $HOME (not changed at all),
> it is displayed as the complete path:
> pan@BJ-APN-2 ~$ cd
> pan@BJ-APN-2 /export/home/pan$
>
> The reason is that my home in passwd has a trailing slash:
> pan@BJ-APN-2 /export/home/pan$ grep ^$USER: /etc/passwd
> pan:x:896:1::/export/home/pan/:/bin/bash
>

You can also reproduce this by directly setting HOME to
`/export/home/pan/'.


> This is tricky to find. I hope it will display tilde even if home dir entry
> in passwd has one or more trailing slash.
>

I personally don't think this needs to be fixed. :)

>
> PS: I read the source code and do not know where this is done, maybe in
> y.tab.c?
>