I frequently paste the line
# -*- org-export-with-sub-superscripts: {}; -*-
into my .org files. To get this to take effect for the next export, the simplest way I've found is to kill the buffer and reopen the file. How can I make this happen without killing the buffer (which is clumsy and loses undo history)?
You can use M-x normal-mode to have the file-local variables reapplied.
Related
When Emacs is closed with modified buffers present, it creates a file with the format '#file_name#' for recovery purpose in its parent directory for each modified buffer (except for scratch).
When recover-file command is used when Emacs opens the next time, the previously modified buffer of the file is recovered. Even so the file #file_name# is not deleted automatically.
This would not occur if you manually kill all buffers before closing. This is a bit tedious as you would have to use the command kill-some-buffer or kill-matching buffer and say 'yes' to each of the prompts one by one.
Is there a simpler method to overcome this? It would be nice to have solutions for one or more of the following.
Prevent Emacs from creating a recovery file for modified buffer while closing
A simple command to force kill all buffers without prompt to save
Setting to re-route the recovery files to a different location (like ~/.emacs.d/)
(Versions: Emacs-24 on Ubuntu-12.04 / OS-X-10.9)
By adding the following line on your init.el file you'll disable the auto-save feature and no more of these files will be generated
(setq auto-save-default nil)
But you may want those files so you can use the code above which I borrowed from emacswiki
(setq backup-directory-alist
`((".*" . ,temporary-file-directory)))
(setq auto-save-file-name-transforms
`((".*" ,temporary-file-directory t)))
This will cause that all backup files will go to the temporary folder on your operating system. Check the emacswiki link to know more about what you can do with this feature
More on this
Emacs manual entry on auto-save
How to open files automatically when starting emacs? does not work either under Windows or under Linux.
After adding the find-file command I received a message
so I disabled the auto-save, but the file does not load anyway.
(add-to-list 'load-path "~/emacs/org-8.0.3")
(setq auto-save-default nil)
(find-file "/home/uwe/Dropbox/orgmode.org")
You probably want to set the initial-buffer-choice variable so that it switches to your org file after running your init.el.
(setq
org-default-notes-file "/home/uwe/Dropbox/orgmode.org"
initial-buffer-choice org-default-notes-file)
The message you see proves that the file is indeed loaded just fine. All it tells you is that there's some auto-save file left over, indicating that some edits were not saved last time. You can ignore the message (which is not an error message), or you can use M-x recover-this-file RET to recover the unsaved changes from the auto-save file.
I strongly recommend you don't disable auto-saving.
IOW what you think doesn't work (automatically loading orgmode.org) actually does work. The only thing that doesn't work the way you want is that this file is not displayed and instead the *scratch* buffer is displayed. The reason for this depends on how you started Emacs. And the fix for it depends on all the different ways you might start Emacs (e.g. if you only ever start Emacs in the exact same way, it's easier).
Don't disable the auto-save, it could save ours files.
Anyway, delete #orgmode.org, if the diff between the two file don't interest you.
Sometimes I use an alternative method (usually sed) to edit a file
that's already being edited by Emacs. Later, if I try to edit the file
in Emacs without reverting the changes first, I get an error message
and a prompt asking me what to do.
That's all fine. The problem is that I tend to forget very often when
I've made some parallel changes, so I'd like Emacs to
remind me by showing a red "M" in the mode-line.
I know how to customize the mode-line (by adding strings to the
mode-line-format variable), but I have no idea how to check if a
file has been modified outside of Emacs.
Is there a function to check whether an Emacs buffer is up to date
with the file it corresponds?
Try
(verify-visited-file-modtime (current-buffer))
See Section 27.6 Buffer Modification Time.
Not really a direct answer to the question, but you can avoid this problem by turning on auto-revert globally in emacs with (global-auto-revert-mode t).
In Emacs, how do I copy a region of text (to paste it in another buffer) without killing it (for example: the file I want to copy from is opened in read-only mode, so killing it isn't an option).
Just mark it (C-space at one end of the range, and move to the other end) and use M-w (kill-ring-save):
(kill-ring-save BEG END)
Save the region as if killed, but don't kill it.
Two additional ways:
You can also select it with the mouse (mouse-button-1), which will copy the region to the kill ring.
When the buffer is read-only, you can use the kill-* routines (C-w and C-k) to copy the region/line to the kill ring. Emacs will beep at you, but it's a documented feature:
If the buffer is read-only, Emacs will
beep and refrain from deleting the
text, but put the text in the kill
ring anyway. This means that you can
use the killing commands to copy text
from a read-only buffer.
I use the command
M-x append-to-file
the problem with this is that if the file you want to copy it to is open, you will need to refresh the screen somehow so that the new stuff appears there. Also, the stuff you copied will go to the end of the file you choose as the target.
You might also find the commands
M-x write-region
and
C-x i (insert-file)
useful.
How do I get emacs to tell me the location of the .emacs file it has loaded?
My situation is simply when I do sudo emacs, it loads up a very different .emacs file than the one in my home directory. I can get around with by doing M-x eval-buffer on my own .emacs file, but that's a lot of extra steps, plus it doesnt seem to clear out the goofy binds in whatever .emacs file is being loaded. If anything, I'd simply like to find the .emacs file and remove some of the stranger binds (c-n, c-p, c-a all rebound to strange stuff)
My main question is still, how do I get emacs to tell me the location of the .emacs file it has loaded?
The init file used is stored in the variable 'user-init-file'. To see this use 'describe-variable' (C-h v), type in 'user-init-file' and it will display the file used.
You could try to see what file is found by:
C-x C-f ~/.emacs RET
~ gets translated to the value of the HOME environment variable. Emacs looks for .emacs, then .emacs.elc (the byte compiled version), then .emacs.el, then ~/.emacs.d/init.elc and ~/.emacs.d/init.el. This documentation shows the alternatives. It also depends on the environment variabls LOGNAME and USER.
You can also check out the contents of the *Messages* buffer - though you should set (setq message-log-max t) (if you can) to ensure that all the Messages are kept. Inside that buffer there are lines that look like:
Loading /home/tjackson/.emacs.tjackson.el (source)...
which will show what files were loaded.
You should also check out the Find-Init documentation that shows even more files that can be loaded like the site-start.el, and terminal specific initialization (new to me).
If you are on Linux, you could try this to see what files are opened by emacs when it launches.
sudo strace -o /tmp/emacs.txt -e open emacs