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V.2 Searching with Grep under Emacs

Just as you can run a compiler from Emacs and then visit the lines where there were 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."

To do this, 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. The output from grep goes in the `*grep*' buffer. You can find the corresponding lines in the original files using C-x ` and RET, as with compilation errors.

If you specify a prefix argument for M-x grep, it figures out the tag (see section W.2 Tags Tables) around point, and puts that into the default grep command.

The command M-x grep-find 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 AB.15 Dired and find.

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