[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: auto indenting code blocks
From: |
Yuri Khan |
Subject: |
Re: auto indenting code blocks |
Date: |
Sat, 13 Jun 2015 17:25:22 +0600 |
On Sat, Jun 13, 2015 at 4:40 PM, Sam Halliday <sam.halliday@gmail.com> wrote:
> I find it extremely convenient when writing Scala code (and this may be
> relevant in all c-mode derivations) to be able to have my code blocks
> automatically expanded.
>
> I have smart-parens installed, so when I type `{' the closing brace is placed
> after point.
>
> But often I intend to write a multi-line block of code (this may well be the
> norm in C and C++) and when I type newline I expect the second brace to be
> moved down a line, indented, and the point placed, indented, in the middle.
I am solving this for C++ with the following ugly hack (BTW thanks for
pointing out “looking-back”):
===
(defun yk-electric-ret ()
(interactive)
(if (and (looking-at "\}") (looking-back "\{")))
(progn
(newline-and-indent)
(save-excursion
(newline-and-indent))
(indent-according-to-mode))
(newline-and-indent)))
(defun yk-braces-keys ()
(local-set-key (kbd "RET") 'yk-electric-ret))
(add-hook 'c-mode-common-hook 'yk-braces-keys)
===
It is essentially equivalent to yours except that I prefer rebinding a
single key to watching for all buffer changes.
> I have cooked up a little post-self-insert-hook (see bottom of mail) but it
> feels like I'm inventing some form of wheel.
>
> 1. is there an existing preferred way to do what my scala-block-indent is
> trying to do?
> 2. is there an easier way (perhaps via smart-parens) to achieve what my
> scala-block-pad is doing, but at the point when the closing brace is inserted?
I am also interested in answers to the above.
Additionally, it would be nice to be able to select a multi-line
region (def: a region that contains at least one line break), press
“{” and have it automatically enclose the region in a pair of braces,
add a line break immediately after the opening brace and another one
before the closing brace, and re-indent all affected lines according
to mode and style. (I could probably compose a function to that effect
and bind it to “{” instead of c-electric-brace or self-insert-command,
but that looks boring :])