Re: Storing of a buffer line number to a file

[Jason Earl]

Bastien Guerry <bastien1@free.fr> writes:

> Alexandre S Iline <shurymury@yandex.ru> :
>
>> Thank you very much - it helps a lot.
>
>> But, I'm still wondering: is there any simplier way to
>> write something to file?
>
> ,----[ with-temp-file ]
> |  - Macro: with-temp-file file body...
> |      The `with-temp-file' macro evaluates the BODY forms with a
> |      temporary buffer as the current buffer; then, at the end, it
> |      writes the buffer contents into file FILE.  It kills the temporary
> |      buffer when finished, restoring the buffer that was current before
> |      the `with-temp-file' form.  Then it returns the value of the last
> |      form in BODY.
> | 
> |      The current buffer is restored even in case of an abnormal exit via
> |      `throw' or error (*note Nonlocal Exits::).
> | 
> |      See also `with-temp-buffer' in *Note Current Buffer::.
> `----
>
> This should do the work:
>
> (defun my-what-line ()
>   "Insert the line number into a temporary file."
>   (interactive)
>   (let ((num (count-lines 1 (point))))
>     (with-temp-file "~/linenum.txt"
>       (insert (int-to-string num)))))
>
> Try also to evaluate:
>
> (info "(elisp)Writing to files")
>
>
> \bye
>
> -- 
> Bastien

Holy Mackerel.  That (info "(elisp)Writing to files") trick is a very
cool.  A simple C-x C-e and I jumped to the info node.

Thanks!