Re: ask for help

[Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

Xiang Ruan wrote:

> I am not familiar with emacs-lisp programming, I just wonder
> if this list could give me some advice on how to implement
> the below functionality.
>
> Suppose I invoke a commend "a" in a buffer, then the buffer
> may have a name with "a". I want to keep watching a specific
> file on my system, let's say, a file of "/data/b".
> When /data/b changes, I want emacs to automatically update
> or re-invoke "a" again in the same buffer "a" without catch
> my focus when I am working on other buffers.
>
> My question is, is it possible to implement it? If it is
> possible, can anybody suggest me a simple example ?

It is usually better to do it when it is needed, not when
it changes.

If it has to happen when it changes I don't know any other way
than to poll it constantly?

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