I remember that there was a mode for Emacs, or was it an option, can't recall, that prettified the code by placing space after operators like ,, ., wrapped = with spaces, and some other cools stuff that I can't remember.
I reckon that this is pretty much language-specific issue, but I usually put space after commas, and wrap = with spaces. Any ideas about this mode?
You're probably thinking of smart-operator.el.
How about smartchr.el?
This is probably not what you are trying to recall, but I'm sure it works nicely for that purpose.
For example:
(require 'smartchr)
(global-set-key (kbd "=") (smartchr '(" = " " == " "=")))
With this configuration, when you type = several times, = is inserted and it rotates to == to = then back to = .
Here is an introduction by the author (written in Japanese, but with a demo video and example of configuration): http://tech.kayac.com/archive/emacs-tips-smartchr.html
Related
Just FYI, I am new to the .emacs file.
I would lik to set up my .emacs file to auto-indent and auto-pair a certain way to make writing code a little faster. I have found some info as to how to do these things independently but I'm not sure how to put it all together for the emacs version that I have. Ultimately, I would like to set up these definitions specific to which ever language I am coding in. Just to get me started I will use java as an example.
Obviously auto-pairing for ", (, ' are pretty straigforward. I would just like it to auto insert a closing ", ), ' and place the cursor in the middle.
For {, I would like it auto insert two newlines and the closing } whith the cursor in the middle.
Example
while (true) {
<--- cursor would be here with auto-indent of 2 spaces
}
I would also like this to work for nested curly braces which the appropriate indentation.
Example
while(true) {
if (...) {
}
}
Here is what I have so far in my .emacs file:
(defun java-autoindent ()
(when (and (eq major-mode 'java-mode) (looking-back "[{;]"))
(newline-and-indent)))
(add-hook 'post-self-insert-hook 'java-autoindent)
Obviously this just inserts a line and auto indents, but I also want the closed } to be included on the line below. I also tried using electric-pair but that didn't work.
My wish list may be a little unrealistic. I'm not even sure that this is possible, but I would be happy with the closest that I could get.
Any help to get me going in the right direction would be greatly appreciated.
Emacs defines modes for each type of language you code in. Some modes are derived from others and there is a mode called prog-mode which most programming modes are derived from.
The mode for a language is where things like indentation are defined because these tend to be language specific. The rules for indentation can be quite complicated, which is why people often use a mode with similar indentation style as the parent and derive a new mode from that.
Have a look at modes and derived mode in the emacs elisp manual.
With respect to adding matching/closing delimiters, have a look at electric-pair-mode (I think it was in emacs 24.4 - I'm running 25 and forget when it was introduced).
With respect to your requirement to enter some code, some newlines and position the cursor in a specific place, you probably want to look at one of emacs' template solutions. yasnippet is a popular choice and it is easy to define new templates in it. There are also many existing packaged yasnippet templates you can download/install. If you don't like yasnippet, google emacs template and have a look there are quitre a few frameworks.
I have wrote simple macro to define interactive function and bind it to key at same time
(That what my previous question related)
The only thing, that annoy me, that it looks ugly without highlighting.
It called such way:
(define-and-bind-command foo "C-x £" (message "Hello world"))
I want define-and-bind-command and foo be highlighted.
Well, to get define-and-bind-command highlighted, I can use wrapper around defmacro,
altho is not so pretty, and I have no idea about foo.
I know it is possible, because argument of require is highlighted with const face.
Or, probably, I am inventing wheel, and there is an another lisp mode with more
advanced highlighting?
highlighting the 'define-and-bind-command' can be achieved very easily using 'font-lock-add-keywords', usage would be
(defun my-elisp-mode-keywords()
(font-lock-add-keywords nil
'(
("\\<\\(define-and-bind-command\\)" . 'font-lock-keyword-face)
)
)
)
Of course you could change the 'font-lock-keyword-face' to any face of your liking or create and use your own face. You can find the name for a face already used very easy by moving the point (cursor) over the font-locked part of text and entering 'describe-face' followed by a return.
Edit2: Oh and of course you need to hook that defun to some hook, for elisp mode that would be:
(add-hook 'emacs-lisp-mode-hook 'my-elisp-mode-keywords)
Highlighting the foo part can be done using a regexp.
Unfortunately I can not yet help you with that part because I'm not sure how to match a regexp containing the 'define-and-bind-command' but highlighting only the word after.
Edit: unless you want to highlight both the 'define-and-bind-command' and the foo part in the same face, then it should be very easy. But I guess you want them to have different faces?
Edit3: Corrected my code, stackoverflow ate some braces before...
Edit4: Okay, I have a solution for matching the second part only, I have not tested it extensively but it seems to work. I have allowed for foo to contains any character but a space (and newline I think), I guess one could restrict that event futher to a-zA-z0-9 and "-", so feel free to change that to your liking. The Code responsible for matching only the foo part is
("\\bdefine-and-bind-command\s\\([^\s]*\\)" 1 'font-lock-function-name-face t)
Insert that in the line after the other font-lock keyword in the above function and you're good to go. The regexp matches 'define-and-bind-command' which must begin a word (that's the \b for) followed by a space and then it returns (font-locks) everything followed until a space exists.
Hope this helps!
font-lock-add-keywords can take a symbol, the mode to which to apply the new keywords. So you could do
(font-lock-add-keywords
'emacs-lisp-mode
'(("\\<\\(define-and-bind-command\\)" . 'font-lock-keyword-face)))
The disadvantage compared to using a function and a hook is that this doesn't work for derived modes; that is, if you have a mode which is derived from emacs-lisp-mode, it will not inherit these keywords.
Everytime I insert a snippet (with yasnippet) in a .tex document, I obtain a newline after the snippet. This is quite annoying for small snippets that are typically used in text style. How can I avoid that?
I read a bit about the problem (http://code.google.com/p/yasnippet/issues/detail?id=115 or http://yasnippet.googlecode.com/svn/trunk/doc/faq.html) but couldn't find a solution. Reproduce it as follows (I work with Aquamacs 2.3a on Mac OS X 10.6.8 with yasnippet version 0.6.1c):
Define ~/Library/Preferences/Aquamacs Emacs/Preferences.el to be:
(require 'yasnippet)
(yas/initialize)
(yas/load-directory "~/Library/Preferences/Aquamacs Emacs/plugins/yasnippet-0.6.1c/snippets")
define the following snippet (call it "bm.yasnippet" [bm = boldmath]; the star * symbolizes where the cursor ends -- note that there is no newline after the snippet)
# name: \bm{}{}
# key: bm
# --
\bm{$1}*
restart Aquamacs and open a .tex file and type in bm + Tab [this should insert the snippet]
A newline is added after the snippet. This is quite inconvenient since \bm{foo} is typically used in text style, so for example in "The vector \bm{x} is not the null vector". A typical cause of this is that the snippet ends with a newline which is then inserted, too. However, I specifically obtain this behavior even the snippet does not end with a newline.
I can't repro it with plain Emacs. In fact, I had this exact issue, but my problem is I had require-final-newline set to t. So Emacs was adding a newline at the end of my template.
My setup is a little more complicated but the solution for you is probably to set mode-require-final-newline to nil and restart Emacs.
To verify this is the problem, open up the template and check for the final newline.
Thanks to the answers in Temporarly disable adding of newlines in Emacs, I'm using a function to only temporarily disable the adding of final newlines in the current buffer:
(defun disable-final-newline ()
(interactive)
(set (make-local-variable 'require-final-newline) nil))
the reason why u got a new line is that your snippet has space or tab at the end.
Ctrl+e and Ctrl+k to kill them will make it works, nearly 1 hour to figure it out...
I had a similar issue with a few snippets, one of that was \frac{}{} which I use quite often.
The snippet version of frac that I use is not the one bundled with yasnippets.
The issue was that I edited some of the snippets in VIM and when you save the file, VIM automatically appends a newline to it.
To resolve it I had to remove the newline in a different editor e.g. emacs.
What would be the easiest way to have the same kind of behavior that is in vim for the word back and forth navigation? In vim when you press "w" it moves a cursor forward one word, where word consists of a sequence of letters, digits and underscores, or a sequence of other non-blank characters, separated with white space (spaces, tabs, eol). In emacs on the other hand it skips until the end of the next word and the word is defined per mode in the syntax table.
For example: having a cursor at the beginning of the line following shows where vim put a cursor when you do forward-word ("w") operation:
opt1.arg = opt2.arg
^ ^^ ^ ^ ^^ ^
In emacs it is like:
opt1.arg = opt2.arg
^ ^ ^ ^ ^
It really depends on a one's preference, but I tend to like the vim style better and I was wondering what is the easiest way to have the same in emacs. I guess I'm not alone who switched from vim to emacs so perhaps someone already has a solution, ideally for the kill-word and backward-kill-word as well :)
I know you can get something similar by combination of M-f, M-b etc., but that is not the point. I also don't want to start a discussion which approach is better - the topis is well discussed in here.
You can actually use 'viper-forward-word
(require 'viper)
(global-set-key (kbd "M-f") 'viper-forward-word)
(global-set-key (kbd "M-b") 'viper-backward-word)
Mostly a duplicate of this, which says:
(require 'misc)
Then bind whatever keys you want to forward-to-word and backward-to-word. For killing, create some simple functions that wrap these functions and do kill.
I don't know why jpkotta's answer was deleted, but here it is again:
I have a minor mode that changes word-based commands to operate on syntax changes (and also CamelCaseSubwords). It may be a bit too fine-grained for some tastes, but I find I basically ever use single character movement anymore.
https://bitbucket.org/jpkotta/syntax-subword
# mods, I don't know why this answer would be deleted, so if you choose to delete this answer too, I'd appreciate an explanation.
given all the possible solutions to have a template system with GNU Emacs, what do people use today ? I am still using skeleton-mode but as I read it here and there, we must be really few to do so.
What are you using and why ? (maybe I could switch to a more popular tool).
For example, given this snippet:
(define-skeleton mwe:cl-defpackage-skeleton
"Inserts a Common Lisp DEFPACKAGE skeleton."
(skeleton-read "Package: " (if v1
(file-name-sans-extension
(file-name-nondirectory
(buffer-file-name)))))
(if (setq v1 (bobp)) ";;; -*- Mode:Lisp; Syntax:ANSI-Common-Lisp;")
& (if buffer-file-coding-system
(concat " Coding:"
(symbol-name
(coding-system-get buffer-file-coding-system
'mime-charset))))
& " -*-"
& \n
& \n "(defpackage #:" str
\n "(:nicknames" ("Nickname: " " #:" str) & ")" | '(kill-whole-line -1)
\n "(:use #:CL" ((slime-read-package-name "USEd package: ") " #:" str) ")"
")" \n
\n
(if v1 "(in-package #:") & str & ")" & \n &
\n
_)
(credits: http://www.foldr.org/~michaelw/log/programming/lisp/defpackage-skeleton)
which (modern) template mode could do the same (and how ;)) ?
Cheers
For the record: even another 7 years later I am still very happy with skeletons. Lots of them available over there in my init files: https://github.com/ska2342/ska-init-files/blob/master/dot.emacs.d/init.el
I use yasnippet.
In my emacs I have this:
(require 'yasnippet-bundle)
In my hook for each mode where I want to use snippets (like my c-mode hook, etc), I have this:
(yas/minor-mode-on)
The "static" snippets I use are available, in the directory structure I use, here:
http://cheeso.members.winisp.net/srcview.aspx?dir=emacs&file=snippets.zip
You need to create the bundle .el file mentioned above, once, when any of the snippets change. do it this way:
(require 'yasnippet)
(yas/compile-bundle
; the starting point
"c:/your/path/yasnippet.el"
; the bundle file to generate
"c:/your/path/yasnippet-bundle.el"
; the snippet dir from which to generate the bundle
"c:/your/path/snippets")
That's it!
Then, when I'm in a C# file and type for<TAB>, I get a template with a for loop. And so on.
I also use yasnippet with dynamic snippet templates. A C# code-completion module I wrote calls yas/expand-snippet with a dynamically constructed string that defines the template to expand.
So, you can type
MyType.Method(<COMPLETE>
...where <COMPLETE> is the code-completion key, and the code-completion module does the lookup on the MyType.Method(, then builds a menu of choices, and pops it up. When the user selects a choice from the menu, the code-completion module builds the template, containing fields for each of the arguments for the selected method. Then it calls yas/expand-snippet and that template is injected into the buffer, just as if it had been a static template. In the dynamically-generated template, each argument to the method gets a "typeover" field, and I just fill it in, tabbing through the fields. Pretty nice.
This "dynamic snippet" idea would work with any code-completion engine. You just need a way to map from a method or function signature, like this:
function(int arg1, string arg2, char arg3)
to a yasnippet template definition string, which looks like this:
function(${1:int arg1}, ${2:string arg2}, ${3:char arg3})
And that's a pretty trivial piece of elisp.
I haven't used skeleton mode much, but I use YASnippet while coding in Ruby and C. Its pretty useful, but I suspect skeleton mode is far more powerful.
The emacs wiki lists Yasnippet as a possible replacement for skeleton. The snippets that come with yasnippet are pretty good, but you should really write your own, as the true power lies there.