An Emacs front-end for ack
ack is a tool like grep, aimed at programmers with large trees of heterogeneous source code. It is available at http://betterthangrep.com/.
Add the following to your .emacs:
(add-to-list 'load-path "/path/to/full-ack")
(autoload 'ack-same "full-ack" nil t)
(autoload 'ack "full-ack" nil t)
(autoload 'ack-find-same-file "full-ack" nil t)
(autoload 'ack-find-file "full-ack" nil t)
Run ack to search for all files and ack-same to search for files of the
same type as the current buffer.
next-error and previous-error can be used to jump to the matches.
ack-find-file and ack-find-same-file use ack to list the files in the
current project. It's a convenient, though slow, way of finding files.