I use display-buffer C-x 4 C-o to set a buffer to the other window. This works great unless I want to put my eshell buffer in the other window. eshell puts itself in my current window every time.
If I prefix the command with C-u eshell switches properly. Is there a way I can make that the default?
Just do this:
(eval-after-load "eshell"
'(eshell-remove-from-window-buffer-names))
As pmr said, defadvice seems like what you want. Just wrap the function and pass an argument to it every time. Here is the link to the gnu docs on defadvice.
http://www.gnu.org/s/emacs/manual/html_node/elisp/Simple-Advice.html#Simple-Advice
Related
By mistake I have binded M-x ( used for doing all the operations ) to a newly defined function ? How do I unbind it ? Now Alt-x always executes my function :( I dont want to exit emacs and restart again, I have lot of buffers open, so is there a way out here ?
The command usually run is execute-extended-command, just rebind it.
To rebind it, you have several options:
Just make what you did before, but just use instead your own function above mentioned execute-extended-command. If you did it with M-x command, then you maybe dont know, but M-x is not only produced by Alt-x, but as there are keyboard layouts that have no Alt (or Meta) key, you can use Esc x instead.
Rebind it with elisp command. To do this, change to the *scratch* buffer, enter
(global-set-key (kbd "M-x") 'execute-extended-command) and execute it with C-j.
Maybe by using the menue (I usually dont use it, so I am not sure on this point)
You could invoke M-: (or Alt-Shift-;) to run eval-expression. Then use global-set-key to reassign "M-x" to its default value (execute-extended-command).
If you're worried about having a lot of buffers open and losing your workspace, you can always enable the desktop extension, which will save and restore the state of your buffers and windows.
In Org-mode it is possible to have links and top open links. As listed by http://orgmode.org/orgcard.txt in Org-mode C-u C-c C-o or mouse-3 forces links to open in another window. How can I do the corresponding for frames, that is, how can I force a link to open in another frame?
What I want is for C-c C-o to work as per default but C-u C-c C-o to force the link to be opened in another frame.
(For the distinction of windows and frames see http://www.gnu.org/software/emacs/manual/html_node/emacs/Frames.html.)
I am running Org-mode 7.6 in 23.3.1.
I just tested and you can get it to work by wrapping org-open-at-point in a (let ) as a custom function.
In this case I'm just prefixing the current org-link-frame-setup with your desired find-file-other-frame to ensure that if you use the command on another link type it will not fail.
(defun zin/org-open-other-frame ()
"Jump to bookmark in another frame. See `bookmark-jump' for more."
(interactive)
(let ((org-link-frame-setup (acons 'file 'find-file-other-frame org-link-frame-setup)))
(org-open-at-point)))
I suspect you will need to bind it to a key sequence other than C-u C-c C-o, unless Emacs will permit you to bind it to that sequence specifically.
Have a look at the variable org-link-frame-setup (M-x customize-variable RET org-link-frame-setup). The docstring should explain the approach.
I just tested this in a non-customized emacs:
emacs -q
GNU Emacs 24.0.92.1 (i386-mingw-nt5.1.2600) of 2011-11-30 on MARVIN
Org-mode version 7.7
When running C-c C-o and C-u C-c C-o on a link similar to the following:
file:~/Dropbox/org/test.org::*Test
I end up with a new frame being opened in both cases. C-u C-u C-c C-o opens the test.org file in my active emacsclient session. When changing the link to .../org/test.txt it still opens in a new frame, however it is unable to create the new file (I'm assuming I don't have .txt properly associated on my end, which is possible).
Testing with [mailto:test#test.org][test-mail]] also results in new frames by default.
Edit: The value for org-link-frame-setup is as follows (it is also the default since it is from emacs -q):
Its value is ((vm . vm-visit-folder-other-frame)
(gnus . org-gnus-no-new-news)
(file . find-file-other-window)
(wl . wl-other-frame))
How can I get Emacs to reload all my definitions that I have updated in .emacs without restarting Emacs?
You can use the command load-file (M-x load-file, and then press Return twice to accept the default filename, which is the current file being edited).
You can also just move the point to the end of any sexp and press C-x, C-e to execute just that sexp. Usually it's not necessary to reload the whole file if you're just changing a line or two.
There is the very convenient
M-x eval-buffer
It immediately evaluates all code in the buffer. It's the quickest method if your .emacs file is idempotent.
You can usually just re-evaluate the changed region. Mark the region of ~/.emacs that you've changed, and then use M-x eval-region RET. This is often safer than re-evaluating the entire file since it's easy to write a .emacs file that doesn't work quite right after being loaded twice.
If you've got your .emacs file open in the currently active buffer:
M-x eval-buffer
Solution
M-: (load user-init-file)
Notes
you type it in Eval: prompt (including the parentheses)
user-init-file is a variable holding the ~/.emacs value (pointing to the configuration file path) by default
(load) is shorter, older, and non-interactive version of (load-file); it is not an Emacs command (to be typed in M-x), but a mere Elisp function
Conclusion
M-: > M-x
M-x load-file
~/.emacs
Others already answered your question as stated, but I find that I usually want to execute the lines that I just wrote.
For that, Ctrl + Alt + X in the Elisp part works just fine.
The following should do it...
M-x load-file
I suggest that you don't do this, initially. Instead, start a new Emacs session and test whatever changes you made to see if they work correctly. The reason to do it this way is to avoid leaving you in a state where you have an inoperable .emacs file, which fails to load or fails to load cleanly. If you do all of your editing in the original session, and all of your testing in a new session, you'll always have something reliable to comment out offending code.
When you are finally happy with your changes, then go ahead and use one of the other answers to reload. My personal preference is to eval just the section you've added/changed, and to do that just highlight the region of added/changed code and call M-x eval-region. Doing that minimizes the code that's evaluated, minimizing any unintentional side-effects, as luapyad points out.
Keyboard shortcut:
(defun reload-init-file ()
(interactive)
(load-file user-init-file))
(global-set-key (kbd "C-c C-l") 'reload-init-file) ; Reload .emacs file
C-x C-e ;; current line
M-x eval-region ;; region
M-x eval-buffer ;; whole buffer
M-x load-file ~/.emacs.d/init.el
Define it in your init file and call by M-x reload-user-init-file
(defun reload-user-init-file()
(interactive)
(load-file user-init-file))
I'm currently on Ubuntu 15.04 (Vivid Vervet); I like to define a key for this.
[M-insert] translates to Alt + Ins on my keyboard.
Put this in your .emacs file:
(global-set-key [M-insert] '(lambda() (interactive) (load-file "~/.emacs")))
Besides commands like M-x eval-buffer or M-x load-file, you can restart a fresh Emacs instance from the command line:
emacs -q --load "init.el"
Usage example: Company backends in GNU Emacs
Here is a quick and easy way to quick test your config. You can also use C-x C-e at the end of specific lisp to execute certain function individually.
C-x C-e runs the command eval-last-sexp (found in global-map), which
is an interactive compiled Lisp function.
It is bound to C-x C-e.
(eval-last-sexp EVAL-LAST-SEXP-ARG-INTERNAL)
Evaluate sexp before point; print value in the echo area.
Interactively, with prefix argument, print output into current buffer.
Normally, this function truncates long output according to the value
of the variables ‘eval-expression-print-length’ and
‘eval-expression-print-level’. With a prefix argument of zero,
however, there is no such truncation. Such a prefix argument also
causes integers to be printed in several additional formats (octal,
hexadecimal, and character).
If ‘eval-expression-debug-on-error’ is non-nil, which is the default,
this command arranges for all errors to enter the debugger.
Although M-x eval-buffer will work, you may run into problems with toggles and other similar things. A better approach might be to "mark" or highlight what’s new in your .emacs file (or even scratch buffer if you're just messing around) and then M-x eval-region.
You can set a key binding for Emacs like this:
;; Reload Emacs configuration
(defun reload-init-file ()
(interactive)
(load-file "~/.emacs"))
(global-set-key (kbd "C-c r") 'reload-init-file)
If you happen to have a shell opened inside Emacs, you can also do:
. ~/.emacs
It may save a few key strokes.
Vim completes words and lines with CTRL-X P and CTRL-L. There's a Emacs plugin called Company mode but this plugin interfere and cause conflicts with lots of things within Emacs (with global linum and yasnippets). I know that I can complete words with CTRL-/ in Emacs. But it is possible to take previously written lines to complete code?
Maybe you're looking for hippie-expand? From that web page (as of this writing, anyway):
HippieExpand looks at the word before
point and tries to expand it in
various ways including expanding from
a fixed list (like expand-abbrev),
expanding from matching text found in
a buffer (like dabbrev-expand) or
expanding in ways defined by your own
functions. Which of these it tries and
in what order is controlled by a
configurable list of functions.
For a comprehensive list of completion options visit the emacs wiki page on completion.
There are a gazillion ways to do completion in Emacs. Some are mode specific, some inline, some configurable and what not. Here is a list of modes that might help you.
Use numberic argument to complete by line, say M-5 M-/ will complete by line, while M-/ alone still complete the normal way.
hippe-expend function has a very useful feature which is :
With a positive numeric argument, jumps directly to the ARG next function in this list. With a negative argument or just C-u, undoes the expansion.
Customize the expansion functions in hippie-expand-try-functions-list and put the function try-expand-line as 5th list element, then you could use M-5 M-/ to complete by line.
This tip is very handy and useful and I highly recommend it.
Also worth noting: if your window manager does not steal Alt-tab, emacs will auto-complete with Alt-tab (I set up my window manager to user the "windows key" instead of alt for this very reason).
If you are using evil, this is the most vim-like solution I use:
(defun my-expand-lines ()
(interactive)
(let ((hippie-expand-try-functions-list
'(try-expand-line-all-buffers)))
(call-interactively 'hippie-expand)))
(define-key evil-insert-state-map (kbd "C-x C-l") 'my-expand-lines)
This way you can use our old friend C-x C-l in insert mode for whole line all buffers completion.
Thanks #ymln for the suggestion of using try-expand-line-all-buffers.
Not being using Emacs all that long (v23, windows) and just discovered M-x ediff. Fantastic.
Although I'm not to keen on the fact it opens its help/navigation in a separate frame/window, meaning that if I lose focus to that window, the single key shortcuts don't work.
For example as soon as I press ? to expand the window, it shifts over top of my current window, so I have to pick up my mouse and move it to another screen. Then if I lose focus to that window and press p / n / j or any other key to work with the diff, it inserts it into my document. So i have to undo, grab mouse, focus to other window, and repeat.
Is there any way to configure these options to show in a split instead?
I didn't know how to do it but it is usually easy to learn with Emacs. First I asked about ediff customizations:
M-x customize-apropos
ediff
I saw there is something called Ediff Window Setup Function which takes the values Multi Frame, Single Frame, or Other Function. Mine was set to Multi Frame and changed it to Single Frame and saved it for future sessions. And Voila! as they say somewhere.
Simply:
(setq ediff-window-setup-function 'ediff-setup-windows-plain)
M-x describe-variable ediff-window-setup-function will enlighten you
further.
For reference my ediff customisation is fairly simple:
(if (locate-library "ediff")
(progn
(autoload 'ediff-files "ediff")
(autoload 'ediff-buffers "ediff")
(eval-after-load "ediff" '(progn
(message "doing ediff customisation")
(setq diff-switches "-u"
ediff-custom-diff-options "-U3"
ediff-split-window-function 'split-window-horizontally
ediff-window-setup-function 'ediff-setup-windows-plain)
(add-hook 'ediff-startup-hook 'ediff-toggle-wide-display)
(add-hook 'ediff-cleanup-hook 'ediff-toggle-wide-display)
(add-hook 'ediff-suspend-hook 'ediff-toggle-wide-display)))))
From chapter Window and Frame Configuration in Ediff User's Manual:
The following variable controls how
windows are set up:
ediff-window-setup-function
The multiframe setup is done by the ediff-setup-windows-multiframe
function, which is the default on
windowing displays. The plain setup,
one where all windows are always in
one frame, is done by
ediff-setup-windows-plain, which is
the default on a non-windowing display
(or in an xterm window). In fact,
under Emacs, you can switch freely
between these two setups by executing
the command ediff-toggle-multiframe
using the Minibuffer of the Menubar.
(custom-set-variables
...
'(ediff-window-setup-function (quote ediff-setup-windows-plain))
...)
Not that you would set the variable this way, but it allows you to know these things:
The variable you are interested in is ediff-window-setup-function
The value it needs to be set to is ediff-setup-windows-plain
You can configure the variable from customize: M-x customize-group RET ediff-window
Ediff Window Setup Function: Menu Single Frame
Note: you can avoid using the mouse to go back to the ediff control window by using M-x other-frame. Also found on C-x 5 o.
This no longer works in 2017 gnu emacs (24.5, 25.2, 2017) on windows
(setq ediff-window-setup-function 'ediff-setup-windows-plain) ; stopped working
Even
ediff-toggle-multiframe ; no longer has any effect now.
It works in emacs22.3 on windows, so I have use older emacs from 2008!