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From: Mikael Magnusson <mikachu@gmail.com>
To: Zach Riggle <zachriggle@gmail.com>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: Collapse a file path to the shortest representation
Date: Fri, 13 May 2022 20:03:54 +0200	[thread overview]
Message-ID: <CAHYJk3TizsDP7D9SVoOsOKGDsX6dv=vhMv2FRMY2LTrzz6YW3w@mail.gmail.com> (raw)
In-Reply-To: <CAMP9c5kFDdOK4PS2-prd4oxk69fkXCXstANkM4Skjg0Law0DCg@mail.gmail.com>

On 5/13/22, Zach Riggle <zachriggle@gmail.com> wrote:
> Is there a ZSH standard way to collapse a file path to its shortest
> representation that would be idempotent per Chapter 14.7?
>
> For example, one might
>
> echo "$filepath" | sed -E "s|$HOME/?|~/|"
> echo "$filepath" | sed -E "s|$HOME/?|\$HOME/|"
>
>
> In order to turn
>
> /home/username/bar/baz → ~/bar/baz
> /home/username/bar/baz → $HOME/bar/baz
>
>
> To achieve this effect.
>
> From the documentation, "14.7 Filename Expansion" has a lot of ways that
> paths can be expanded, including...
>
> 14.7.2
> ... the path is checked to see if it has a named directory as its prefix.
> If so, then the prefix portion is replaced with a ‘~’ followed by the name
> of the directory ....
>
>
> Is there a standardized way to access this expansion with e.g.
> /path/to/somedir → ~SOMEDIR/foo?

The D parameter expansion flag does this.

-- 
Mikael Magnusson


  reply	other threads:[~2022-05-13 18:14 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-13 17:53 Zach Riggle
2022-05-13 18:03 ` Mikael Magnusson [this message]
2022-05-18 22:42   ` Zach Riggle

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