emacs file encoding choices: with-signature?

emacs file encoding choices: with-signature?

[Xah Lee]

when using set-buffer-file-coding-system
(emacs 23), i get the following choices with utf-8:

Possible completions are:
utf-8-auto 	utf-8-auto-dos
utf-8-auto-mac 	utf-8-auto-unix
utf-8-dos 	utf-8-emacs
utf-8-emacs-dos 	utf-8-emacs-mac
utf-8-emacs-unix 	utf-8-mac
utf-8-unix 	utf-8-with-signature
utf-8-with-signature-dos 	utf-8-with-signature-mac
utf-8-with-signature-unix

what is the "with-signature" mean? is it the unicode BOM marker?
and what about "emacs"? Is that the emacs 22's internal encoding
system?

  Xah
∑ http://xahlee.org/

☄

Re: emacs file encoding choices: with-signature?

[Xah Lee]

On Jul 26, 11:52 am, Xah Lee <xah...@gmail.com> wrote:
> when using set-buffer-file-coding-system
> (emacs 23), i get the following choices with utf-8:
>
> Possible completions are:
> utf-8-auto      utf-8-auto-dos
> utf-8-auto-mac  utf-8-auto-unix
> utf-8-dos       utf-8-emacs
> utf-8-emacs-dos         utf-8-emacs-mac
> utf-8-emacs-unix        utf-8-mac
> utf-8-unix      utf-8-with-signature
> utf-8-with-signature-dos        utf-8-with-signature-mac
> utf-8-with-signature-unix
>
> what is the "with-signature" mean? is it the unicode BOM marker?
> and what about "emacs"? Is that the emacs 22's internal encoding
> system?

I got the answer. Just do list-coding-systems and result will answer
with short description.

  Xah
∑ http://xahlee.org/

☄