Re: Glob problem

[Yuya Amemiya <ghostrevery@xxxxxxxxx>]

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@xxxxxxxxx>
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@xxxxxxxxx> wrote:
> 
>> Hi,
>> 
>>> print -l $path/$~pattern
>> 
>> Try this:
>>  print -l -- ${^path}/${~pattern}
>> 
>> regards
>> 
>> From: Brent Briggs <brent.briggs@xxxxxxxxx>
>> 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@xxxxxxxxxx> 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@xxxxxxxx>  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.
>>>>>> 
>>>> 
>>> 
>