Re: auto indenting code blocks

[Yuri Khan <yuri.v.khan@gmail.com>]

On Sat, Jun 13, 2015 at 5:55 PM, Michael Heerdegen
<michael_heerdegen@web.de> wrote:

> Shouldn't `electric-indent-mode' be able to do this?

Maybe it should, but it does not for me.

$ emacs --version
GNU Emacs 24.4.1
[…]

$ emacs -Q

M-: (add-to-list 'load-path "~/.emacs.d/dash.el")
;; as of github:magnars/dash.el tag 2.10.0

M-: (add-to-list 'load-path "~/.emacs.d/smartparens")
;; as of github:Fuco1/smartparens.git commit 8d22a6b

M-x load-library
smartparens-config

M-x smartparens-global-mode

M-x load-library
cc-mode

M-: (setq c-default-style '((java-mode . "java") (awk-mode . "awk")
(other . "stroustrup")))

C-x C-f ~/test.cpp
;; where the file does not exist

Now I start typing:

===
int main(|
===

As soon as I type the opening parenthesis, smartparens adds a matching
closing parenthesis after the point:

===
int main(|)
===

I press End to get out of parentheses and then press Enter to start a new line:

===
int main()
    |
===

I press “{”. smartparens adds a matching closing brace.
electric-indent-mode unindents the newly inserted pair of braces to
the level of “int”:

===
int main()
{|}
===

(1)

I press Enter. Nothing special happens:

===
int main()
{
|}
===

(2)

I press Enter again. Nothing special happens again:

===
int main()
{

|}
===

The behavior does not change if I use Ctrl+J instead of Enter.

If at point (2) I go to the end of the line with the opening brace and
press Enter, or if at point (1) I press Ctrl+O and then Enter, then I
get the desired function skeleton:

===
int main()
{
    |
}
===

But those are not key sequences I’d like to repeat every time.

If I forgo smartparens, then electric-indent-mode does indeed yield
the desired sequence:

===
int main()|
===

Enter

===
int main()
    |
===

Opening brace

===
int main()
{|
===

Enter

===
int main()
{
    |
===

Some text

===
int main()
{
    std::cout << "Hello World\n";|
===

Enter

===
int main()
{
    std::cout << "Hello World\n";
    |
===

Closing brace

===
int main()
{
    std::cout << "Hello World\n";
}|
===

However, smartparens is too convenient to give up.