Several questions about the use of emacs

Several questions about the use of emacs

[Chen, Yukun]

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Hi All
	Not sure whether anyone has the same experience. I have some questions about the usage of emacs as follows
	1. How can I comments a block of content once? (mean that I can comment sever lines by marking them with "//" at the start position in c language. I think it is useful in c development)
	2. Has emacs provided the function that complete the left character of a word, just as the commands of vi "ctrl + n" "ctrl + p" do?

	Thanx.
Aaron

Intel China Software Lab

Tel:  8621-52574545 Ext.1587

E_mail:yukun.chen@intel.com



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Re: Several questions about the use of emacs

[Kai Grossjohann]

"Chen, Yukun" <yukun.chen@intel.com> writes:

> 	1. How can I comments a block of content once? (mean that I
> 	can comment sever lines by marking them with "//" at the start
> 	position in c language. I think it is useful in c development)

Mark the region and hit M-;.  Hitting M-; again removes the comment
lines again.  I think you need to turn on transient-mark-mode for this
to work.

Perhaps C mode also supports the C-c C-c binding to comment a region
of code.  Use C-u C-c C-c to uncomment.

> 	2. Has emacs provided the function that complete the left
> 	character of a word, just as the commands of vi "ctrl + n"
> 	"ctrl + p" do?

There are M-/ and C-M-/.  I think that M-/ is somewhat similar to
Ctrl-P, but it searches in both directions and it searches other
buffers, too.  C-M-/ provides completion, whereas M-/ cycles through
the list of possibilities.

Kai

RE: Several questions about the use of emacs

[Chen, Yukun]

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Thanx Kai, it works now

Aaron 

-----Original Message-----
From: help-gnu-emacs-bounces+yukun.chen=intel.com@gnu.org [mailto:help-gnu-emacs-bounces+yukun.chen=intel.com@gnu.org] On Behalf Of Kai Grossjohann
Sent: 2004年11月29日 19:47
To: help-gnu-emacs@gnu.org
Subject: Re: Several questions about the use of emacs

"Chen, Yukun" <yukun.chen@intel.com> writes:

> 	1. How can I comments a block of content once? (mean that I
> 	can comment sever lines by marking them with "//" at the start
> 	position in c language. I think it is useful in c development)

Mark the region and hit M-;.  Hitting M-; again removes the comment
lines again.  I think you need to turn on transient-mark-mode for this
to work.

Perhaps C mode also supports the C-c C-c binding to comment a region
of code.  Use C-u C-c C-c to uncomment.

> 	2. Has emacs provided the function that complete the left
> 	character of a word, just as the commands of vi "ctrl + n"
> 	"ctrl + p" do?

There are M-/ and C-M-/.  I think that M-/ is somewhat similar to
Ctrl-P, but it searches in both directions and it searches other
buffers, too.  C-M-/ provides completion, whereas M-/ cycles through
the list of possibilities.

Kai



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