Re: Glob problem

[Peter Miller <peter.d.miller@oracle.com>]

On 10/22/13 14:49, Brent Briggs wrote:
> 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?

I'm sure there is a better way, but this should work:

v=(); for entry in $path; do v+=($entry/$~pattern); done; print -l $v



>
> 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.
>>>>