I'm trying to enable whitespace mode but it doesn't seem to be working for me.
I've added the whitespace.el file to my .emacs.d/ directory.
I added the following lines to me .emacs file:
(add-hook 'before-save-hook 'whitespace-cleanup)
(add-hook 'before-save-hook (lambda() (delete-trailing-whitespace)))
(require 'whitespace)
I did the following in the whitespace.el file:
M-x byte-compile-file <path to whitespace.el>
I tried executing the following command from any random text in emacs (e.g.: test.c):
M-x whitespace-toggle-options RET
But I just get a message saying [No match]
What am I missing?
Also, will I have to type in a command to enable the whitespace-mode every time I use emacs?
whitespace.el has been included in Emacs for quite a while. Unless you have a very old version, you shouldn't need to manually put it anywhere, or do anything particularly special to use it.
whitespace-toggle-options probably isn't the function you want to use. Instead, try whitespace-mode:
Toggle whitespace visualization (Whitespace mode).
With a prefix argument ARG, enable Whitespace mode if ARG is
positive, and disable it otherwise. If called from Lisp, enable
the mode if ARG is omitted or nil.
If you want to enable it by default, add
(global-whitespace-mode)
to your init file.
Related
There's a huge literature on the topic, but, nevertheless, I cannot get this done.
My ultimate goal is to work with fstar on Microsoft Windows.
C-x C-f resolves ~ as C:/Users/myname which is in line with my HOME environment variable in the Environmental variables Windows section.
(expand-file-name user-emacs-directory), as described here yields, C:/Users/myname/.emacs.d/
In C:/Users/myname/.emacs.d/ I have placed .emacs.el and init.el with the suggested script:
(require 'package) (add-to-list 'package-archives '("melpa" .
"http://melpa.org/packages/") t) (package-initialize)
However M-x returns undefined, no matter if I start Emacs with or without the -q flag (see here). My "Messages" buffer is empty".
A couple of things you could try:
Check the value of the variable user-init-file (use C-h v). That should tell you if Emacs loads the file you want it to load. If you started Emacs with the -q option, the value of this variable should be nil.
The error M-x is undefined can be caused by rebinding the Escape key. (That's because pressing a key while holding down the "Meta" key is equivalent to first pressing Escape and then the key in question.) Is there something in the init file that might cause this to happen?
Try starting Emacs with -Q instead of -q. This makes Emacs skip "site-wide" init files. I can't really think of a reason why your system would have any of those, but it might be worth ruling this out.
You could edit your question and include your entire init file (surround it with ``` on a line by itself), so we could have a look.
Emacs doesn't recognize the extension .hgrc, so it uses fundamental mode and all the text is black, including comments. Is there a good mode to use for editing .hgrc? And how would I configure emacs to use that mode automatically when I'm editing .hgrc?
Learned so far from answers:
conf-mode is the mode I want, and there are various ways to configure emacs to use it for editing .hgrc.
I added
(add-to-list 'auto-mode-alist '("/\\.[^/]*rc" . conf-mode) t)
to my .emacs.el, so
my emacs opens all RC files (including .hgrc) in Conf[Unix] mode.
The reason for the 3rd argument to add-to-list is that the default mode for run control files is conf-mode unless a prior setting overrides it.
Visit .hgrc, switch to Conf Mode with M-x conf-mode, and then type M-x add-file-local-variable-prop-line RET mode RET conf-mode.
This adds a special comment at the beginning of your .hgrc, which tells Emacs to use conf-mode for this file:
# -*- mode: conf; -*-
[extensions]
hgext.color =
# …
I often use ido for auto-completion and tramp to access remote server via ssh. My .emacs includes the following lines:
(require 'tramp)
(setq tramp-default-method "ssh")
(ido-mode 1)
(setq ido-enable-flex-matching t)
(setq ido-everywhere t)
I want to disable Ido completion, when i'm browsing contents of remote server. Note that variable ido-enable-tramp-completion has nothing to do with my problem. Consider line /root#site.com#1234:/var/www/file.txt. I need Ido not to deduct the part after the colon (remote file path), i don't care about the part before the colon. I use ssh, and Ido makes Emacs lag for a few seconds every time i run ido-find-file, and when ssh timeout is over, Tramp tries to reconnect, asks me for a password and so on. This behavior is undesirable.
Emacs version - 24.0.94.1
Edit (20.03.12): After contact with Ido author I tried to change the ido-file-name-all-completions-1 to the following:
(defun ido-file-name-all-completions-1 (dir)
(cond
((ido-nonreadable-directory-p dir) '())
;; do not check (ido-directory-too-big-p dir) here.
;; Caller must have done that if necessary.
((and ido-enable-tramp-completion
(or (fboundp 'tramp-completion-mode-p)
(require 'tramp nil t))
(string-match "\\`/[^/]+[:#]\\'" dir))
;; TRAMP RELATED CODE DELETED
nil)
(t
(file-name-all-completions "" dir))))
No success. I then changed regex to
"\\`/[^/]+[:#]"
and it worked - Ido was disabled, when minibuffer contained that match. However as Ido couldn't see files on a remote server, it started calling ido-make-merged-file-list to search for files in other directories every time i enter something. This made working with Ido on remote servers even more pain.
I also tried setting up variables ido-slow-ftp-hosts and ido-slow-ftp-host-regexps to /root#site.com#1234, didn't help.
If you enter C-x C-f again you temporally disable ido-find and fall back to the default find-file.
For more information C-h f ido-find-file RET
To do this every time ido found a colon, I guess you have to write your own function for that.
I'm using python-mode 6.0.1 on OS X, emacs 23.3 (http://emacsformacosx.com/ version).
I'm trying to get C-c C-c to default to python 3.
I have the following in my .emacs:
(setq py-python-command "/usr/local/bin/python3")
And when I run C-h b py-python-command, it tells me the value is that (correctly).
However, running C-c C-c still opens 2.7.2.
I also tried adding:
(setq py-which-shell "/usr/local/bin/python3")
as suggested here: Both Python 2 and 3 in Emacs, but that doesn't change anything (py-which-shell does get changed, but it still launches 2.7.2).
Any ideas?
Try adding the following code to your Emacs init file:
(add-hook 'python-mode-hook
(lambda ()
(setq py-python-command "python3")
(setq py-default-interpreter "python3")))
py-default-interpreter for now is an alias only, delivered for backward compatibility
You might have encountered a bug.
Please file a report giving some example code at
https://bugs.launchpad.net/python-mode
Should the buffer code contain a shebang specifying pythonVERSION , than this takes precedence over default setting.
You may enforce executing buffer through specific pythonVERSION by calling
a command of class py-execute-buffer-pythonVERSION
See menu PyExec, entry Execute buffer ...
I've recently switched to emacsclient for most text editing. I am trying to migrate some of my settings to the new (and slightly different) environment.
In particular, in my .emacs file I have a function that sets the window size, and prepares some themes. However code in the .emacs file is not executed on each invocation of emacsclient, so the settings do not apply to these windows. Based on the question here, I added a hook to 'server-visit-hook that called a function which executed my settings. However, the settings are not being applied when I restart the server and invoke emacsclient.
How can set the styling and positioning of new emacsclient windows? Relevant portions of my .emacs are included below:
(defun gui-mode()
(set-face-attribute 'default nil :font "Monospace-8")
(require 'theme-wombat)
(set-frame-size-according-to-resolution))
(add-hook 'server-visit-hook 'gui-mode)
(when window-system
(gui-mode))
Start emacsclient with the -e option, and use that to tell it to load your configs:
emacsclient -c -e '(load "~/.emacsclient")'
where ~/.emacsclient contains your configuration code. You probably want to define an alias or menu option so that you don't actually type that in every time you call emacsclient.
(add-to-list 'default-frame-alist '(fullscreen . fullboth))
in .emacs does the job.