Re: Byte offset from point

[Eli Zaretskii <eliz@gnu.org>]

> From: senny <yves.senn@gmail.com>
> Date: Wed, 12 Aug 2009 12:06:26 -0700 (PDT)
> 
> >     (position-bytes (point))
> 
> I tried that but it gave me incorrect results when dealing with
> newlines on windows. The lisp function counted them as 1 byte but the
> service i was calling counted them as 2 bytes.

If you want Emacs to account for the (potentially stripped) CR
characters, you need to visit the file without any code conversions,
e.g. with `find-file-literally' or with
`insert-file-contents-literally'.  Then position-bytes will count
correctly.

Alternatively, you could call count-lines-region and add one character
for each line before point.

If this does not help, perhaps consider telling more about the problem
you are trying to solve.