Date: Thu, 14 Oct 1999 12:09:32 -0600 From: Wes Peters <wes@softweyr.com> To: Clark Jarvis <clark@pharlap.com> Cc: Mohit Aron <aron@cs.rice.edu>, freebsd-net@FreeBSD.ORG Subject: Re: Search a symbol in the source tree Message-ID: <38061C5C.75B89CA3@softweyr.com> References: <19991014163644223.AAA270@sugar.pharlap.com@clark>
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Clark Jarvis wrote:
>
> In <199910122012.PAA23666@cs.rice.edu>, on 10/12/99
> at 03:12 PM, Mohit Aron <aron@cs.rice.edu> said:
>
> >> Can anyone suggest me a way of searching symbols in the entire /usr/src
> >> tree? I normally use grep */*. But grep does not work recursively, right?
> >> Something like a small shell script may do this. Thanks a lot.
>
> >Rather than using something equivalent to a recursive grep (which is
> >slow), I prefer to use etags. This gives me the flexibility of searching
> >for symbols from within emacs where emacs directly takes me to the
> >section of code that defines the symbol.
>
> [tags creation code deleted]
>
> I use a combination of tags and an unzipped tar file of the source tree,
> providing your text editor can handle large files and binary characters
> with some success. Just load up the tar file and search. Inside the tar
> file, the filespec for each file is stored in a block at the beginning of
> each file, so it only takes a little reverse searching to figure out where
> the file lives in the source tree.
>
> Tags are great, but they don't find where/how symbols are used, just where
> they are defined. And realizing that this is an old, ingrained behavior -
> etags may be able to do more than I'm aware of.
'tags-search' will exhaustively search all the tagged files for the symbol.
On popular symbols, this can take a while, but it will certainly find all
the references. Handily enough, the search string is a regexp.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
wes@softweyr.com http://softweyr.com/
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