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Is there a way to search all the open buffers for a particular pattern?
C-s interactively searches current buffer. Similarly, is there something that searches all the open buffers?
I know I can use "occur", but "Occur" brings a new buffer and changes/messes with the buffer organization.
820
At any time, one and only one buffer is selected. It is also called the current buffer. Often we say that a command operates on "the buffer" as if there were only one; but really this means that the command operates on the selected buffer (most commands do).
For conveniently switching between a few buffers, use the commands C-x <LEFT> and C-x <RIGHT> . C-x <RIGHT> ( previous-buffer ) selects the previous buffer (following the order of most recent selection in the current frame), while C-x <LEFT> ( next-buffer ) moves through buffers in the reverse direction.
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.
This is because Emacs tracks buffer positions using that data type. For typical 64-bit machines, this maximum buffer size is 2^{61} - 2 bytes, or about 2 EiB. For typical 32-bit machines, the maximum is usually 2^{29} - 2 bytes, or about 512 MiB.
The built-in multi-occur-in-matching-buffers hasn't been mentioned. I use a modified version of this (because I invariably want to search all buffers, and specifying a buffer name pattern each time is annoying).
(defun my-multi-occur-in-matching-buffers (regexp &optional allbufs) "Show lines matching REGEXP in all file-visiting buffers. Given a prefix argument, search in ALL buffers." (interactive (occur-read-primary-args)) (multi-occur-in-matching-buffers "." regexp allbufs)) (global-set-key (kbd "M-s /") 'my-multi-occur-in-matching-buffers) To invert the behaviour of the prefix argument so that the default behaviour is to search all buffers, change the call to:
(multi-occur-in-matching-buffers "." regexp (not allbufs)) (and, of course, update the docstring accordingly.)
110
I've fixed the TODO:
;; I know that string is in my Emacs somewhere! (require 'cl) (defcustom search-all-buffers-ignored-files (list (rx-to-string '(and bos (or ".bash_history" "TAGS") eos))) "Files to ignore when searching buffers via \\[search-all-buffers]." :type 'editable-list) (require 'grep) (defun search-all-buffers (regexp prefix) "Searches file-visiting buffers for occurence of REGEXP. With prefix > 1 (i.e., if you type C-u \\[search-all-buffers]), searches all buffers." (interactive (list (grep-read-regexp) current-prefix-arg)) (message "Regexp is %s; prefix is %s" regexp prefix) (multi-occur (if (member prefix '(4 (4))) (buffer-list) (remove-if (lambda (b) (some (lambda (rx) (string-match rx (file-name-nondirectory (buffer-file-name b)))) search-all-buffers-ignored-files)) (remove-if-not 'buffer-file-name (buffer-list)))) regexp)) (global-set-key [f7] 'search-all-buffers) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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