global key for `multi-occur-in-this-mode' - you should change this. "Show all lines matching REGEXP in buffers with this major mode." "Returns a list of buffers where their major-mode is equal to MODE"
#Search emacs code#
The code seen below will search all open buffers that share the same mode as the active buffer. My only complaint about occur is that it does not let you quickly search a set of buffers that match a specific major mode – arguably a common use case if you’re a programmer.
#Search emacs free#
You’re free to make what ever changes you like, Emacs will reflect the changes you’ve made back into the source buffer when you type C-c C-c.Įxceptionally powerful, and works well with keyboard macros or advanced search and replace.Ĭombine with M-x multi-occur-in-matching-buffers for bulk editing across a range of buffers. One blow-your-mind feature is editable Occur! M-x occur-edit-mode (also bound to e) engages the edit mode in Occur. Set it to 2, and you’ll see the preceding and following two lines of each match Occur finds.
If you customize list-matching-lines-default-context-lines you can tell Emacs to show contextual lines around the match. In a similar vein, you can enable follow mode in the *Occur* buffer by pressing C-c C-f, and future calls to M-n and M-p in the *Occur* buffer will automatically jump to the correct match in the source buffer. Combine it with keyboard macros and you can build a sophisticated tool capable of processing an arbitrary amount of data, provided you source your matches for the keyboard macro by jumping to the next or previous match. The latter is useful if you combine it with M-x auto-revert-tail-mode in the buffer(s) that you’re searching.Īnother useful feature is its support for the compilation mode commands next/previous-error ( M-g M-n and M-g M-p, respectively), as you can step through the matches one by one. You can also re-run the occur command by pressing g in the output buffer. When you do use Occur, you can tell it to rename the buffer (if you desire more than one open Occur buffer) by pressing r. Both work well for that purpose, but they do require that you specify what you want Occur to search for. If you want to match against multiple buffers you must use the sibling commands M-x multi-occur or M-x multi-occur-in-matching-buffers. The Achilles’ heel is that it only works on a single buffer. Want to step through the matches with M-g M-n or M-g M-p.Need or desire an overview of all the matches.Don’t want to iterate my way through the matches with Isearch ( C-s).Pressing e makes it editable type C-c C-c to commit the changes you have made back to the source buffer.īecause Occur is so useful, it’s the first thing I reach for when I: And much like M-x grep the matching lines are hyperlinked so you can jump to the location of the match. Like grep, Occur filters lines using regular expressions. The Emacs M-x occur command (also bound to M-s o) is a useful replacement for GNU grep when your only requirement is searching open buffers in Emacs.
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