I'd like to group my buffer list in ibuffer by project. Project is meant in the Projectile sense of the word.
I don't want to change my Emacs configuration every time I'm working on a new project. Is there a way to achieve this automatically?
You can define filter groups for known projects using something like this:
;; Define ibuffer filter groups for each known project
(defun my/define-projectile-filter-groups ()
(when (boundp 'projectile-known-projects)
(setq my/project-filter-groups
(mapcar
(lambda (it)
(let ((name (file-name-nondirectory (directory-file-name it))))
`(,name (filename . ,(expand-file-name it)))))
projectile-known-projects))))
;; Set up default ibuffer filter groups
(setq ibuffer-saved-filter-groups
(list
(cons "default"
(append
(my/define-projectile-filter-groups)
;; ... whatever other groups you want, e.g.
'(("dired" (mode . dired-mode))
("erc" (mode . erc-mode)))
))))
;; Enable default groups by default
(add-hook 'ibuffer-mode-hook
(lambda ()
(ibuffer-switch-to-saved-filter-groups "default")))
;; You probably don't want to see empty project groups
(setq ibuffer-show-empty-filter-groups nil)
Update
Since I originally wrote this answer, @sanityinc has created a variant of ibuffer-vc that creates filter groups by projectile project root. You can find ibuffer-projectile on MELPA or on GitHub.
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Yes, I should submit a pull request to support ibuffer groups. It came up once before but I didn't follow up. :D I'll take a closer look, it might make more sense to do something like ibuffer-vc and build the groups based on current buffers rather than the known project list. But a simple option would be to have projectile define a named filter group from known projects as shown here. – glucas Oct 16 '14 at 14:27
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As @Silex noted in another answer, someone already added ibuffer support earlier this year -- I had missed that. It's a different approach in that it filters ibuffer for the current project only, but looks handy. – glucas Oct 16 '14 at 14:35
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@glucas well but I think the current Ibuffer behaviors in Projectile is redundant with
projectile-switch-buffer. Ibuffer is meant for managing large amount of buffers, and that's why it has grouping and filtering. I like the current approach that it groups based on known project list, making it more consistent with Projectile. – Tu Do Oct 18 '14 at 16:13
Project is meant in the Projectile sense of the word.
Using Projectile, there is a way to switch to a buffer inside a specific project C-c p b
May I suggest ibuffer-vc? A way to group your buffers by their parent vc root directory.
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ibuffer-vcis pretty near to what I'm looking for. But it overwrites myibuffer-saved-filter-groups; is there a way to create the VC groups additionally to my standard groups? – ckruse Oct 15 '14 at 7:24 -
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This might help: github.com/reinh/dotemacs/blob/master/conf/init.org#ido. Specifically the part beginning
nox/ibuffer-apply-filter-groups. – tirocinium May 12 '17 at 12:33
Using projectile, you can simply type C-c p I (projectile-ibuffer) and only the buffers for that project will show up in ibuffer.
