Electric braces

[Guido Van Hoecke]

Hi,

When using 'electric braces' in Visual Studio, MonoDevelop and other
tools, I like the behaviour where the closing brace is auto-detected.

(In the example, I show the insertion point as a bar)
If I type

if (|

the screen shows

if (|)

I then key in my test expression, say isFalse (or whatever):

if (isFalse|)

At this point, Visual studio and MonoDevelop realise that the next ')'
key I hit, really represents the ')' which is already there. It does not
add an additional ')' :

if (isFalse)|

But in Emacs, currently using cperl, but also when using c#-mode, or
IIRC ruby-mode, emacs does add an additional ')' which leads to
following erroneous code:

if (isFalse)|)

I am pretty cinfident that Emacs can mimic the VS/MD behaviour. I just
did not find yet how to request it from good old Emacs.

Thanks in advance for any suggestions,




Guido

--
Expect a letter from a friend who will ask a favor of you.

http://vanhoecke.org ... and go2 places!

[Константин Куликов]

google autopair.el

2012/9/19 Guido Van Hoecke <gui...@gmail.com>

[Pascal J. Bourguignon]

Guido Van Hoecke <gui...@gmail.com> writes:

> Hi,
>
> When using 'electric braces' in Visual Studio, MonoDevelop and other
> tools, I like the behaviour where the closing brace is auto-detected.
>

> (In the example, I show the insertion point as a bar)
> If I type
>
> if (|
>
> the screen shows
>
> if (|)
>
> I then key in my test expression, say isFalse (or whatever):
>
> if (isFalse|)
>
> At this point, Visual studio and MonoDevelop realise that the next ')'
> key I hit, really represents the ')' which is already there. It does not
> add an additional ')' :
>
> if (isFalse)|
>
> But in Emacs, currently using cperl, but also when using c#-mode, or
> IIRC ruby-mode, emacs does add an additional ')' which leads to
> following erroneous code:
>
> if (isFalse)|)
>
> I am pretty cinfident that Emacs can mimic the VS/MD behaviour. I just
> did not find yet how to request it from good old Emacs.
>
> Thanks in advance for any suggestions,

paredit-mode does that, but perhaps some more since it's for lisp
editing. You'll want to extract parts of it.

--
__Pascal Bourguignon__ http://www.informatimago.com/
A bad day in () is better than a good day in {}.

[Dmitry Gutov]

Константин Куликов <zxno...@gmail.com> writes:

> google autopair.el

Why google? Here's the home page: http://code.google.com/p/autopair/

And yes, it's the most popular package for this purpose.

I especially like the newline behavior (the fourth bullet point).

[Stefan Monnier]

> I am pretty cinfident that Emacs can mimic the VS/MD behaviour. I just
> did not find yet how to request it from good old Emacs.

The built-in electric-pair-mode does that.


Stefan

[Guido Van Hoecke]

Hi Stefan, Pascal and Constantin

Thanks for your kind replies.

I tried the built-inelectric-pair-mode and it does what I want.

With kind regards,


Guido

--
Death is nature's way of saying `Howdy'.

[Stefan Monnier]

> I tried the built-in electric-pair-mode and it does what I want.

I'm glad you like it,


Stefan

[João Távora]

(originally forgot to cc: help-gn...@gnu.org)

I'd just like to add that autopair:

* is now hosted at github.com/capitaomorte/autopair
* out of the box, does a bit more than electric-pair-mode, like
deleting 0-width paren pairs when backspacing and helping to keep the
buffer balanced (for example typing 3 opening "{" consecutively makes
"{{{}}}" instead of electric pair's "{{{}".
* can be customized to behave differently in comments and strings,
pair characters, and more

I'm quite positively surprised how electric-pair-mode has evolved
though, but still find it awkward in how it sometimes pairs and
sometimes doesn't.

--
João Távora