Doing a file filter with grep

Doing a file filter with grep

[RealityMonster]

So I've been getting find and grep working on my WinXP system with
emacs. I can finally properly search for files and search in files for
the things that I want. I'd like, however, to put a file filter on it,
so I can search just through .h files or .cpp files.

On the command line, I'd do something like this:

grep -r Pattern `find . -name *.cpp`

Doing

grep -r Pattern *.cpp

doesn't work because I'm running the command on a top level directory
that I want to recursively search through.

Emacs' find system relies on find-dired, which appends find-ls-option,
which prints all the matching files to a buffer, but that's not quite
what I want either.

I could write a more simple process exec function, I guess, but I like
the way that the find-dired stuff creates its output. I could also go
through the task of copying find-dired and changing it so it doesn't
have the ls option at the end, but that seems really clumsy.

I suppose this could be a command-line issue as well. grep could well
do what I want, but I don't see it in the man page. It's always been
easier to cobble together little bits that I DO know from other
programs anyway.

Any help here? Does emacs already do what I want somewhere else? M-x
apropos find is understandably enormous.

Re: Doing a file filter with grep

[Eli Zaretskii]

> From: "RealityMonster" <jan.sacharuk@gmail.com>
> Date: 25 Jan 2007 14:37:45 -0800
> 
> So I've been getting find and grep working on my WinXP system with
> emacs. I can finally properly search for files and search in files for
> the things that I want. I'd like, however, to put a file filter on it,
> so I can search just through .h files or .cpp files.
> 
> On the command line, I'd do something like this:
> 
> grep -r Pattern `find . -name *.cpp`

After typing "M-x grep RET" inside Emacs, make the Grep command be
this:

    grep -r Pattern . --include="*.cpp"

That's it! no need to use `find'.

Re: Doing a file filter with grep

[Kim F. Storm]

"RealityMonster" <jan.sacharuk@gmail.com> writes:

> So I've been getting find and grep working on my WinXP system with
> emacs. I can finally properly search for files and search in files for
> the things that I want. I'd like, however, to put a file filter on it,
> so I can search just through .h files or .cpp files.
>
> On the command line, I'd do something like this:
>
> grep -r Pattern `find . -name *.cpp`

Try M-x rgrep

 (available only in Emacs 22).

>
> Any help here? Does emacs already do what I want somewhere else? M-x
> apropos find is understandably enormous.

So why didn't you try this :-)
   C-h a grep RET 


-- 
Kim F. Storm  http://www.cua.dk

Re: Doing a file filter with grep

[Jan Sacharuk]

I did, but it didn't appear to turn up anything useful. I'll take a  
look at your suggestion when I get in to work. Thanks. :)

JS

On Jan 26, 2007, at 6:09 AM, Kim F. Storm wrote:

> "RealityMonster" <jan.sacharuk@gmail.com> writes:
>
>> So I've been getting find and grep working on my WinXP system with
>> emacs. I can finally properly search for files and search in files  
>> for
>> the things that I want. I'd like, however, to put a file filter on  
>> it,
>> so I can search just through .h files or .cpp files.
>>
>> On the command line, I'd do something like this:
>>
>> grep -r Pattern `find . -name *.cpp`
>
> Try M-x rgrep
>
>  (available only in Emacs 22).
>
>>
>> Any help here? Does emacs already do what I want somewhere else? M-x
>> apropos find is understandably enormous.
>
> So why didn't you try this :-)
>    C-h a grep RET
>
>
> -- 
> Kim F. Storm  http://www.cua.dk
>

--
jan@chloris.ca
Cyclist at Large
Secret Asian Man
     DNA neither cares nor knows.
          DNA just is. And we dance to its music.
          -Richard Dawkins

Re: Doing a file filter with grep

[RealityMonster]

Ah-ha. I checked my version, and I'm on 21.2. No wonder I didn't see
rgrep. :)

JS

On Jan 26, 6:09 am, no-s...@cua.dk (Kim F. Storm) wrote:
> "RealityMonster" <jan.sacha...@gmail.com> writes:
> > So I've been getting find and grep working on my WinXP system with
> > emacs. I can finally properly search for files and search in files for
> > the things that I want. I'd like, however, to put a file filter on it,
> > so I can search just through .h files or .cpp files.
>
> > On the command line, I'd do something like this:
>
> > grep -r Pattern `find . -name *.cpp`Try M-x rgrep
>
>  (available only in Emacs 22).
>
>
>
> > Any help here? Does emacs already do what I want somewhere else? M-x
> > apropos find is understandably enormous.So why didn't you try this :-)
>    C-h a grep RET
> 
> --
> Kim F. Storm  http://www.cua.dk

Re: Doing a file filter with grep

[RealityMonster]

Perfect. I read the man page, but I didn't realize '--include' was an
exclusive pattern (despite it saying that RIGHT THERE). This'll be easy
to write a wrapper around so I can search by directory and pattern
without having to type --include=*.foo all the time.

Thanks,

JS

On Jan 26, 2:29 am, Eli Zaretskii <e...@gnu.org> wrote:
> > From: "RealityMonster" <jan.sacha...@gmail.com>
> > Date: 25 Jan 2007 14:37:45 -0800
>
> > So I've been getting find and grep working on my WinXP system with
> > emacs. I can finally properly search for files and search in files for
> > the things that I want. I'd like, however, to put a file filter on it,
> > so I can search just through .h files or .cpp files.
>
> > On the command line, I'd do something like this:
>
> > grep -r Pattern `find . -name *.cpp`After typing "M-x grep RET" inside Emacs, make the Grep command be
> this:
>
>     grep -r Pattern . --include="*.cpp"
> 
> That's it! no need to use `find'.