How can I make latex-mode to apply to files with .tikz extension in Emacs? (I am using Auctex)
You can run M-x latex-mode in the file buffer. If you want to automatically do this for every file you visit add the following to .emacs,
(setq auto-mode-alist
(append
'(("\\.tikz\\'" . latex-mode))
auto-mode-alist))
auto-mode-alist is a list of file types and the mode to apply as you may have guessed. You can run C-h v auto-mode-alist to get a description of the variable for your emacs.
Related
I'm using helm-mode in emacs to open files. However, when I try to copy the path of a file (say /home/user1/Documents/file1.txt) through mouse left-click and hold to paste it in terminal, I get a message saying
<down-mouse-1> is undefined
I guess helm does not support mouse operations as described here, in which case how can I copy path of a file from emacs (in helm-mode) to paste it in terminal
The answer given in this other thread may seem more straightforward.
In short: with the file selected in the minibuffer use C-u C-c C-k. This invokes helm-kill-selection-and-quit. The file's full path is copied to the kill ring and can be pasted in Emacs or elsewhere.
I guess you want to copy from Minibuffer to your system clipboard. Minibuffer keybinding isn't different from other buffers. If in other buffers you use M-w to copy the region, it should also work in Minibuffer. Note that if you niled x-select-enable-clipboard you need to enable it first. I have the following functions in my init.el
(defun copy-to-clipboard()
(interactive)
(setq x-select-enable-clipboard t)
(kill-ring-save (region-beginning) (region-end))
(setq x-select-enable-clipboard nil))
and
(defun paste-from-clipboard ()
(interactive)
(setq x-select-enable-clipboard t)
(yank)
(setq x-select-enable-clipboard nil))
Unfortunately you can't use your mouse to select the texts (ie. to make a region) in helm-mode; you need to set-mark-command (by default C-SPC or C-#) and move your point (ie. cursor). Or just hold the shift and move the point like most other text editors. There is also a mark-word command (by default M-#) that expands the region word by word.
I also recorded an asciinema (because they're fun 🙂) that you can watch it here
I simply want to supply two files to emacs from terminal and it should open them in two separate windows in diff mode.
You're looking for ediff. In emacs you can activate it via M-x ediff and the file names.
To call it from commandline try something like this (taken from emacs wiki):
(defun command-line-diff (switch)
(let ((file1 (pop command-line-args-left))
(file2 (pop command-line-args-left)))
(ediff file1 file2)))
(add-to-list 'command-switch-alist '("diff" . command-line-diff))
;; Usage: emacs -diff file1 file2
To get you started here are a few additional "saner" defaults"
;; saner ediff default
(setq ediff-diff-options "-w")
(setq ediff-split-window-function 'split-window-horizontally)
(setq ediff-window-setup-function 'ediff-setup-windows-plain)
These will always split to have ediff windows side-by-side.
If you want to always force a new frame (it is cleaner this way), try these additionally:
(add-hook 'ediff-before-setup-hook 'new-frame)
(add-hook 'ediff-quit-hook 'delete-frame)
I hope that helps for the beginning.
My Emacs opens .m files in ObjC mode. However I want to open them in Octave mode. I have already added to the .emacs file:
(autoload 'octave-mode "octave-mod" nil t)
(setq auto-mode-alist (cons '("\\.m$" . octave-mode) auto-mode-alist))
What else should I do? I do have Octave mode installed.
Fortunately everything is working now and unfortunately I don't remember how I fixed it :) Maybe there was an error in my .emacs earlier. This is the more correct code:
(add-to-list 'auto-mode-alist '("\\.m$" . octave-mode))
Autoloading is unneeded in recent versions; if you do need to enable it, note that "octave-mode" is not a typo.
(autoload 'octave-mode "octave-mod" nil t)
Use this.
;; octave-mode
(autoload 'octave-mode "octave-mode" "Loding octave-mode" t)
(add-to-list 'auto-mode-alist '("\\.m\\'" . octave-mode))
Just ran into this exact problem.
Your statement is correct, but your .emacs file probably isn't loading up correctly. Emacs searches the "HOME" variable to load up preferences, lisp code etc.
To see what your HOME variable is:
Open scratch buffer (this is a "play place" to try things out):
C-x C-b *scratch* <RET>
Evaluate this expression by typing it, then putting the cursor to the right, then hitting C-x C-e
insert (getenv "HOME")
Emacs will display your home path at the bottom (mine defaulted to ...Documents and Settings\UserName)
I haven't worked out a good way to change it, but you're supposed to be able to simply add HOME as an environment variable (that didn't work for me).
It's also talked about a bit more over here:
http://www.gnu.org/software/emacs/manual/html_node/emacs/Windows-HOME.html
Also remember that the file has to be ".emacs" and not myConfig.emacs or something of the like. Use bash command ren to rename the file (windows explorer won't let you have nameless files)
My Emacs opens .m files in ObjC mode. However I want to open them in Octave mode. I have already added to the .emacs file:
(autoload 'octave-mode "octave-mod" nil t)
(setq auto-mode-alist (cons '("\\.m$" . octave-mode) auto-mode-alist))
What else should I do? I do have Octave mode installed.
Fortunately everything is working now and unfortunately I don't remember how I fixed it :) Maybe there was an error in my .emacs earlier. This is the more correct code:
(add-to-list 'auto-mode-alist '("\\.m$" . octave-mode))
Autoloading is unneeded in recent versions; if you do need to enable it, note that "octave-mode" is not a typo.
(autoload 'octave-mode "octave-mod" nil t)
Use this.
;; octave-mode
(autoload 'octave-mode "octave-mode" "Loding octave-mode" t)
(add-to-list 'auto-mode-alist '("\\.m\\'" . octave-mode))
Just ran into this exact problem.
Your statement is correct, but your .emacs file probably isn't loading up correctly. Emacs searches the "HOME" variable to load up preferences, lisp code etc.
To see what your HOME variable is:
Open scratch buffer (this is a "play place" to try things out):
C-x C-b *scratch* <RET>
Evaluate this expression by typing it, then putting the cursor to the right, then hitting C-x C-e
insert (getenv "HOME")
Emacs will display your home path at the bottom (mine defaulted to ...Documents and Settings\UserName)
I haven't worked out a good way to change it, but you're supposed to be able to simply add HOME as an environment variable (that didn't work for me).
It's also talked about a bit more over here:
http://www.gnu.org/software/emacs/manual/html_node/emacs/Windows-HOME.html
Also remember that the file has to be ".emacs" and not myConfig.emacs or something of the like. Use bash command ren to rename the file (windows explorer won't let you have nameless files)
EDIT: It turns out that the second edit to my .emacs file actually works. (See the comments below this entry.)
I tried a couple of addition to the .emacs to make all txt files opened in emacs use orgmode. They did not work. How can I make it happen?
;;SET EMACS AS DEFAULT MAJOR MODE TO FOR ALL FILES WITH AN UNSPECIFIED MODE
(setq default-major-mode 'org-mode)
;;OPEN ALL TXT FILES IN ORGMODE
(add-to-list 'auto-mode-alist '("\\.txt$" . org-mode))
Additionally:
It would be even better to open only txt files in a certain directory orgmode. Any hint as to how that could be done would also be appreciated.
Another way to do this is using directory-local variables. This is nice because you can put a file in any directory where you want this behavior to engage, and it works recursively in any subdirectories.
Create a file called .dir-locals.el in the desired directory.
Here are the contents:
((nil (eval . (if (string-match ".txt$" (buffer-file-name))(org-mode)))))
Read this like so: for any major-mode (nil), evaluate the following form:
(if .... (org-mode))
The regex in auto-mode-alist could be something more complex, like "^/path/to/.*\\.txt$"
You can implement a hook which verifies the file directory and modifies the buffer mode:
(add-hook 'find-file-hooks
(lambda ()
(let ((file (buffer-file-name)))
(when (and file (equal (file-name-directory file) "c:/temp/"))
(org-mode)))))
As an alternative you can add the mode line in the beginning of your text file. In this case emacs will set the specified mode.
; -*- mode: org;-*-
* header 1
** header 2
I glued together some code from Oleg Pavliv's answer here, and from yibe's at elisp - File extension hook in Emacs - Stack Overflow
(defun use-org-mode-for-dot-txt-files-in-owncloud ()
(when (and (string-match owncloud buffer-file-name)
(string-match "\\.txt\\'" buffer-file-name))
(org-mode)))
(add-hook 'find-file-hook 'use-org-mode-for-dot-txt-files-in-owncloud)
This way, though ownCloud Web and phone apps are currently friendly only with .txt files, from my PC I can use Emacs' Org-mode for them.
(If I set all .txt files to use Org-mode, it breaks todotxt-mode.)
(Note that owncloud is a string variable equal to my ownCloud path.)