I would like to have auto-complete-mode enabled by default. For some reason global-auto-complete-mode does not seem to have an effect on anything. What I have been doing to this point is manually enabling auto-complete-mode whenever I open a new buffer. What are my options here?
(add-hook 'prog-mode-hook #'auto-complete-mode)
global-auto-complete-mode is not as global as you may think it is. From the manual:
Enable auto-complete-mode automatically for specific modes
auto-complete-mode won't be enabled automatically for modes that are
not in ac-modes. So you need to set if necessary:
(add-to-list 'ac-modes 'brandnew-mode)
Thus if you would like to have, say, all buffers that are in prog-mode or in eshell-mode to automatically have auto-complete-mode enabled, you'd have to put the following in your .emacs file:
(add-to-list 'ac-modes 'prog-mode)
(add-to-list 'ac-modes 'eshell-mode)
Related
I set up emacs to turn flyspell on by default for text mode using
(add-hook 'flyspell-mode-hook 'flyspell-buffer)
(add-hook 'text-mode-hook 'flyspell-mode)
I would like to disable it automatically in org mode files, and I did manage to disable it using a lambda function in the org mode hook:
(add-hook 'org-mode-hook (lambda () (flyspell-mode -1)))
This works, but the syntax highlight changes that flyspell did still remain, and interfere with org mode's syntax highlight. I also see in the minibuffer that flyspell does run when I visit that file, so apparently it is turned off only afterwards. How do I turn it off in such a way that would leave no trace of it in the org mode file, or better yet not run at all?
You can selectively enable flyspell in text-mode hook by checking the major-mode. The following will enable flyspell in text-mode and its derived modes except org-mode
(add-hook 'flyspell-mode-hook 'flyspell-buffer)
(add-hook 'text-mode-hook (lambda ()
(when (not (equal major-mode 'org-mode))
(flyspell-mode t))))
Regarding the first question (remove the highlightings), the following call should do it:
(flyspell-delete-all-overlays)
However, are you really, really, really sure you want to disable flyspell in Org mode??? Is there a really, really, really good reason for that?
If yes, shouldn't you solve that one, instead of trying the above?
I'm trying to enable auto-complete-mode whenever a .go file is loaded through go-mode. It works if I invoke auto-complete-mode manually for Go source files, but when I tried adding it to .emacs as below, it doesn't work:
(add-hook 'go-mode-hook auto-complete-mode)
I've tried a few variations around it but none seem to work. Following is what the Go-Mode snippet currently looks like in my .emacs:
;; Load Go Mode
(require 'go-mode-load)
(add-hook 'go-mode-hook 'auto-complete-mode)
I tried creating my own hook function like this:
;; Load Go Mode
(require 'go-mode-load)
(defun auto-complete-for-go ()
(auto-complete-mode 1))
(add-hook 'go-mode-hook 'auto-complete-for-go)
I also tried including the hook in go-mode-load.el and go-mode.el, as well as calling auto-complete-mode like this:
(auto-complete-mode t)
(provide 'go-mode)
Doesn't work either way. I also added the go-mode-hook to auto-complete-default function like so:
(defun ac-config-default ()
(setq-default ac-sources '(ac-source-abbrev ac-source-dictionary ac-source-words-in-same-mode-buffers))
(add-hook 'go-mode-hook 'ac-common-setup)
;; Other hooks
(global-auto-complete-mode t))
That doesn't work either. What's the best way to trigger a command just after a major mode is enabled for a buffer?
Here is workaround for now:
(add-to-list 'ac-modes 'go-mode)
I fixed the problem in v1.4 branch with the following commits.
Add go-mode to ac-modes
Add go-mode dictionary
Which variations have you tried? It should work if you add a single-quote in front of auto-complete-mode:
(add-hook 'go-mode-hook 'auto-complete-mode)
Without this quote, auto-complete-mode is interpreted as a variable and the value of that variable is added to go-mode-hook. For this to make sense, such a variable should contain a function reference as its value. Most likely though there will be no variable named auto-complete-mode and Emacs will complain.
By adding a quote, you tell Emacs that this is not a variable, but the actual function you want the hook to call. See also here and here.
Today I got my new PC (Windows 7, 32 bit) and installed Vincelt Goulets Emacs. The only other thing I did was updating Org-mode.
Now, I am stuck with auto-fill-mode on every time I start Emacs new, which I hate. I would like to turn auto-fill-mode off, for now and forever. I even deleted my .emacs file, but auto-fill-mode was still turned on.
The only solution that worked was (a) a nasty workaround or (b) always typing M-x auto-fill-mode every time I start Emacs anew.
Is there a solution?
To be clear, the only thing the current .emacs file contains is: '(inhibit-startup-screen t)
Add to your .emacs,
(auto-fill-mode -1)
If there are hooks for specific modes, you will need to zap those as well. My suspicion is that you do not actually have auto-fill-mode on by default in all modes, but with the information you have supplied, at least this should be a starting point.
A reasonable safeguard would be to also disable auto-fill mode from `text-mode-hook':
(remove-hook 'text-mode-hook #'turn-on-auto-fill)
You may need something similar for other modes as well.
Assuming that he has not made fundamental changes, you have several paths:
You can just turn off the mode globally in your .emacs file:
(turn-off-auto-fill)
;; ...or (auto-fill-mode -1)
Since Emacs of that vintage also turns on auto-fill for text-mode, add:
(remove-hook 'text-mode-hook 'turn-on-auto-fill)
That should account for all the default places, but check the major mode hooks if you have other modes enabling this automatically.
If you'd like to keep it turned-on in most text-mode while disable auto-fill in specific modes, e.g. org-mode in my case, you could use the following:
;; turn on auto-fill for text-mode
(add-hook 'text-mode-hook 'turn-on-auto-fill)
;; turn off auto-fill for org-mode
(add-hook 'org-mode-hook 'turn-off-auto-fill)
I load auto-complete mode like this:
(let ((ac-path "path/to/auto-complete"))
(add-to-list 'load-path ac-path)
(require 'auto-complete-config)
(add-to-list 'ac-dictionary-directories (concat ac-path "ac-dict"))
(ac-config-default))
It works fine with C major mode, but doesn't turn on automatically when I open ObjC files. I can still turn it on manually and it will work fine along with the ObjC major mode.
Here's a snippet from the docs regarding ObjC major mode:
The hook `c-mode-common-hook' is run with no args
at mode initialization, then `objc-mode-hook'.
If I understand correctly, auto-complete adds a hook to the c-mode-common-hook, but objc-mode-hook somehow overrides it. Is there a way to fix this?
Thanks.
While looking through the source code of auto-complete.el, I've stumbled upon this definition
(defcustom ac-modes
'(emacs-lisp-mode
lisp-interaction-mode
c-mode cc-mode c++-mode
java-mode clojure-mode scala-mode
scheme-mode
ocaml-mode tuareg-mode
perl-mode cperl-mode python-mode ruby-mode
ecmascript-mode javascript-mode js-mode js2-mode php-mode css-mode
makefile-mode sh-mode fortran-mode f90-mode ada-mode
xml-mode sgml-mode)
"Major modes `auto-complete-mode' can run on."
:type '(repeat symbol)
:group 'auto-complete)
It turns out that auto-complete doesn't have a true global mode. It is enabled only with those major modes that are included in the ac-modes variable.
So, adding the following line to the .emacs file has solved the issue for me.
; add this line after the auto-complete mode has been loaded
(add-to-list 'ac-modes 'objc-mode)
Use the following:
(defun my-objc-mode-hook ()
(auto-complete-mode 1))
(add-hook 'objc-mode-hook 'my-objc-mode-hook)
Note 1: The function auto-complete-mode is a toggle function, when called with no arguments.
Note 2: It's possible to add an anonymous function using lambda, but this have several drawbacks. The most important ones are: modifying the function and reevaluating the expression will add the modified function in addition to the earlier version and C-h v xxx will print the full unformatted lambda function, which typically is hopeless to read and understand.
(add-hook 'objc-mode-hook 'auto-complete-mode)
That should do it if you're using auto-complete-mode. You can add more complex things to mode hooks by doing:
(add-hook 'objc-mode-hook '(lambda ()
(something-with arguments)))
Note that both arguments to add-hook are quoted, this is necessary and if you add unquoted functions they will probably not work.
I'm moving from vi to emacs and, using viper and vimpulse, it gets pretty annoying when I C-w C-w to a window and cannot get back to the original one with the same command because the other buffer, which could be a help buffer, is not in the Viper mode. How can I fix this?
I tried to add other modes to the viper configuration and make them start with the viper mode on by default using hooks:
(add-to-list viper-vi-state-mode-list 'help-mode)
(add-hook 'help-mode (lambda () (setq viper-mode t)))
But none of these commands did work. In fact, the first one yielded the following error:
Warning (initialization): An error occurred while loading `/home/konrad/.emacs.d/init.el':
Wrong type argument: symbolp, (fundamental-mode ...
Besides the C-w C-w, I also miss not being able to navigate using hjkl. Isn't there a way to reuse the keybindings set by viper, instead of rebinding them again for every mode?
The error is because you neglected to quote the variable viper-vi-state-mode-list like so:
(add-to-list 'viper-vi-state-mode-list 'help-mode)
See this question as to why you need to quote 'viper-vi-state-mode-list.
But, that didn't solve the problem for me, this is how I got C-w C-w to work the way you want:
(define-key help-mode-map (kbd "C-w C-w") 'vimpulse-cycle-windows)
The syntax for adding the hook to help-mode would look like this:
(add-hook 'help-mode-hook (lambda () (viper-mode t)))
Note the hook variable is named with "-hook", and setq doesn't work here because viper-mode is a command, not a variable.
You might be able to get all modes to activate viper with:
(add-hook 'fundamental-mode-hook (lambda () (viper-mode t)))
since all modes inherit from fundamental-mode.