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Just as you can run a compiler from Emacs and then visit the lines with
compilation errors, you can also run grep and then visit the lines on
which matches were found. This works by treating the matches reported by
grep as if they were “errors.” The buffer of matches uses Grep
mode, which is a variant of Compilation mode (voir la section Compilation Mode).
Run grep asynchronously under Emacs, with matching lines listed in
the buffer named ‘*grep*’.
Run grep via find, with user-specified arguments, and collect
output in the buffer named ‘*grep*’.
Kill the running grep subprocess.
To run grep, type M-x grep, then enter a command line that
specifies how to run grep. Use the same arguments you would give
grep when running it normally: a grep-style regexp (usually in
single-quotes to quote the shell's special characters) followed by file
names, which may use wildcards. If you specify a prefix argument for
M-x grep, it finds the tag (voir la section Tags Tables) in the buffer around point,
and puts that into the default grep command.
Your command need not simply run grep; you can use any shell command
that produces output in the same format. For instance, you can chain
grep commands, like this:
grep -nH -e foo *.el | grep bar | grep toto |
The output from grep goes in the ‘*grep*’ buffer. You can find
the corresponding lines in the original files using C-x `,
<RET>, and so forth, just like compilation errors.
Some grep programs accept a ‘--color’ option to output special markers
around matches for the purpose of highlighting. You can make use of this
feature by setting grep-highlight-matches to t. When
displaying a match in the source buffer, the exact match will be
highlighted, instead of the entire source line.
The command M-x grep-find (also available as M-x find-grep) is
similar to M-x grep, but it supplies a different initial default for
the command—one that runs both find and grep, so as to
search every file in a directory tree. See also the find-grep-dired
command, in Dired and find.
The commands M-x lgrep (local grep) and M-x rgrep (recursive
grep) are more user-friendly versions of grep and grep-find,
which prompt separately for the regular expression to match, the files to
search, and the base directory for the search. Case sensitivity of the
search is controlled by the current value of case-fold-search.
These commands build the shell commands based on the variables
grep-template (for lgrep) and grep-find-template (for
rgrep).
The files to search can use aliases defined in the variable
grep-files-aliases.
Subdirectories listed in the variable grep-find-ignored-directories
such as those typically used by various version control systems, like CVS
and arch, are automatically skipped by rgrep.
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Ce document a été généré par Eric Reinbold le 23 Février 2009 en utilisant texi2html 1.78.