From: Yuya Amemiya <ghostrevery@gmail.com>
To: brent.briggs@gmail.com
Cc: zsh-users@zsh.org
Subject: Re: Glob problem
Date: Wed, 23 Oct 2013 23:29:56 +0900 (JST) [thread overview]
Message-ID: <20131023.232956.18388131.ghostrevery@gmail.com> (raw)
In-Reply-To: <91F9ED9F-B198-403B-9FE1-FF40DE960C1C@gmail.com>
Hi,
> This did the job. I still have one question. I can't find any documentation for the "--" option. What does it do exactly?
"--" is not a option.
This separates options and normal arguments to give arguments starting with "-".
The more important point is ${^path}.
This turns on RC_EXPAND_PARAM option for evaluation of path.
${^path}/${~pattern} is substituted with /opt/local/bin/git*(N) /opt/local/sbin/git*(N) ...
and result of substitution is interpreted as pattern for filename generation.
regards,
From: Brent Briggs <brent.briggs@gmail.com>
Subject: Re: Glob problem
Date: Wed, 23 Oct 2013 08:27:22 -0400
> This did the job. I still have one question. I can't find any documentation for the "--" option. What does it do exactly?
>
>
> On Oct 22, 2013, at 4:11 PM, Yuya Amemiya <ghostrevery@gmail.com> wrote:
>
>> Hi,
>>
>>> print -l $path/$~pattern
>>
>> Try this:
>> print -l -- ${^path}/${~pattern}
>>
>> regards
>>
>> From: Brent Briggs <brent.briggs@gmail.com>
>> Subject: Re: Glob problem
>> Date: Tue, 22 Oct 2013 14:49:13 -0400
>>
>>> Adding the (N) Glob Qualifier made a difference but is I'm still not quite there yet.
>>>
>>> pattern=git*(N)
>>> print -l $path/$~pattern
>>>
>>> Output:
>>> ----------
>>> /opt/local/bin
>>> /opt/local/sbin
>>> /usr/bin
>>> /bin
>>> /usr/sbin
>>> /sbin
>>> /usr/local/bin
>>> /usr/local/MacGPG2/bin
>>>
>>> This is my full path listing minus the final entry /Users/brent/bin. I know this is a bit of an incidental question but why is the final path entry missing from this output?
>>>
>>> Trying this gets me a little closer.
>>>
>>> pattern=git*(N)
>>> for entry in $path
>>> do
>>> print -l $entry/$~pattern
>>> done
>>>
>>> Output:
>>> ----------
>>> /opt/local/bin/git
>>> /opt/local/bin/git-credential-osxkeychain
>>> /opt/local/bin/git-cvsserver
>>> /opt/local/bin/git-receive-pack
>>> /opt/local/bin/git-shell
>>> /opt/local/bin/git-upload-archive
>>> /opt/local/bin/git-upload-pack
>>> /opt/local/bin/gitk
>>> -- blank --
>>> /usr/bin/git
>>> /usr/bin/git-cvsserver
>>> /usr/bin/git-receive-pack
>>> /usr/bin/git-shell
>>> /usr/bin/git-upload-archive
>>> /usr/bin/git-upload-pack
>>> -- blank --
>>> -- blank --
>>> -- blank --
>>> -- blank --
>>> -- blank --
>>>
>>> Blank lines are printed for the directories that contain no pattern matches. Any quick way to get rid of these?
>>>
>>> On Oct 22, 2013, at 2:12 PM, Peter Miller <peter.d.miller@oracle.com> wrote:
>>>
>>>> On 10/22/13 14:02, Brent Briggs wrote:
>>>>> Thanks for all the responses. The glob is now being generated properly. However, I am still having a problem getting my loop to run completely through.
>>>>>
>>>>> pattern=git*
>>>>> for entry in $path
>>>>> do
>>>>> print -l $entry/$~pattern
>>>>> done
>>>>>
>>>>> Output:
>>>>> ----------
>>>>> /opt/local/bin/git
>>>>> /opt/local/bin/git-credential-osxkeychain
>>>>> /opt/local/bin/git-cvsserver
>>>>> /opt/local/bin/git-receive-pack
>>>>> /opt/local/bin/git-shell
>>>>> /opt/local/bin/git-upload-archive
>>>>> /opt/local/bin/git-upload-pack
>>>>> /opt/local/bin/gitk
>>>>> zsh: no matches found: /opt/local/sbin/git*
>>>>>
>>>>> /opt/local/sbin/ being the second entry in my path.
>>>>>
>>>>>
>>>>> Also tried:
>>>>>
>>>>> print -l $path/$~pattern
>>>>
>>>> try
>>>>
>>>> pattern=git*(N)
>>>> print -l $path/$~pattern
>>>>
>>>> that will tell zsh to ignore globs that don't have any matches.
>>>>
>>>>>
>>>>> Output:
>>>>> ----------
>>>>> zsh: no matches found: /Users/brent/bin/git*
>>>>>
>>>>> /Users/brent/bin/ being the last entry in my path.
>>>>>
>>>>> Looks like I need to use a conditional to test if any pattern matches exist, per directory, before trying to print them. I wasn't able to find a solution in the manual that facilitates testing for the existence of pattern matches. I would like to solve this problem using only globbing if possible. I am probably missing something simple.
>>>>>
>>>>>
>>>>>
>>>>> On Oct 22, 2013, at 1:05 PM, Philippe Troin<phil@fifi.org> wrote:
>>>>>
>>>>>> On Tue, 2013-10-22 at 12:45 -0400, Brent Briggs wrote:
>>>>>>
>>>>>>> I am simply trying to list all matches for a specified pattern in an
>>>>>>> array of directory paths, the $path array for example. Here is my
>>>>>>> attempt. Where am I going wrong?
>>>>>> Globs are not ran after variable substitution by default.
>>>>>> To run filename generation (aka globs) after variable substitution, use
>>>>>> $~var.
>>>>>>
>>>>>> Your example:
>>>>>>
>>>>>>> pattern=git*
>>>>>>> for entry in $path
>>>>>>> do
>>>>>>> # Print all files in the path that match the pattern.
>>>>>>> print $entry/$pattern
>>>>>>> done
>>>>>> Can be rewritten as:
>>>>>>
>>>>>> pattern=git*
>>>>>> for entry in $path
>>>>>> do
>>>>>> # Print all files in the path that match the pattern.
>>>>>> print $entry/$~pattern
>>>>>> done
>>>>>>
>>>>>> It can be simplified further as:
>>>>>>
>>>>>> pattern=git*
>>>>>> print $path/$~pattern
>>>>>>
>>>>>> Phil.
>>>>>>
>>>>
>>>
>
next prev parent reply other threads:[~2013-10-23 14:30 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-22 16:45 Brent Briggs
2013-10-22 16:58 ` Jérémie Roquet
2013-10-22 16:59 ` Peter Stephenson
2013-10-22 17:05 ` Philippe Troin
2013-10-22 18:02 ` Brent Briggs
2013-10-22 18:12 ` Peter Miller
2013-10-22 18:49 ` Brent Briggs
2013-10-22 19:30 ` Peter Miller
2013-10-22 20:11 ` Yuya Amemiya
2013-10-23 12:27 ` Brent Briggs
2013-10-23 12:37 ` Jérémie Roquet
2013-10-23 13:47 ` Peter Stephenson
2013-10-23 14:29 ` Yuya Amemiya [this message]
2013-10-22 17:11 ` Matt Garriott
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