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Re: Recursive globbing shorthand (a la **.c)
- X-seq: zsh-users 20846
- From: ZyX <kp-pav@xxxxxxxxx>
- To: Mikael Magnusson <mikachu@xxxxxxxxx>, "vogt@xxxxxxxxxxxxxxxxxx" <vogt@xxxxxxxxxxxxxxxxxx>, Zsh Users <zsh-users@xxxxxxx>
- Subject: Re: Recursive globbing shorthand (a la **.c)
- Date: Wed, 28 Oct 2015 22:04:04 +0300
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28.10.2015, 16:28, "Mikael Magnusson" <mikachu@xxxxxxxxx>:
> On Wed, Oct 28, 2015 at 7:57 AM, Dominik Vogt <vogt@xxxxxxxxxxxxxxxxxx> wrote:
>> Most of the time, I use recursive globbing to find files of
>> certain types, e.g.
>> $ ll **/*.c
>> With the zsh here (4.3.17), recursive globbing works only
>> with a plain ** anyway (i.e. in "**x" and "x**" the ** works just
>> like a plain "*"). So, is it possible (or a useful future
>> feature) to make "**" imply a trailing "/*" if not with a trailing
>> pattern? Then we could type
>> $ ll **.c
>> as a shorthand, and the "traditional" uses would work without
>> change (e.g. **/*.c or **/foo).
>> (Note that on German keyboards, "/" and "*" are very awkward to
>> type in a sequence because both need the left shift key held and
>> the keys for the right hand are very far apart, so this is really
>> a usability issue.)
> If this is something you do often, you can do
> alias -g '**.c=**/*.c'
> I don't think it's useful to implement generally though, there's no
> particular reason to assume the pattern following the **/ should start
> with a *
This depends on how you treat patterns. In mercurial `**` is treated as `.*` and `*` is treated as `[^/]*`, so pattern `a**b` matches file `a/c/b` (note. With such interpretation transforming foo** into foo*/**, **bar into **/*bar and foo**bar into foo*/**/*bar makes perfect sense. Though mercurial is using regexps on a list of files, not the real globbing, this behaviour is official and not an accident: there are patterns like `**.c` in examples. As OP said this is convenient in many cases.
// And git documentation officially says that only valid uses of `**` are `…/**`, `**/…` and `…/**/…`.
> Mikael Magnusson
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