Re: Scripting emacs-w3m - need script blocking

[Katsumi Yamaoka <yamaoka@xxxxxxx>]

>>>>> In [emacs-w3m : No.08515] Richard Freytag wrote:

> I am a grateful that emacs-w3m exists.  It is very useful.  One
> application I have is reading and saving web pages for later reference.

> My question/problem is: my keyboard-macros and elisp-commands seem to fail
> because URL opening in emacs-w3m is non-blocking.  The script runs
> (w3m-goto-url "http://www.google.com";) ... and then finds another URL in
> that w3m window and attempts to open that new URL.  This causes an error
> complaining about an attempt to run an asynchronous process.

> Is there a way to block my eLisp keyboard-macro while w3m-goto-url opens a
> web page and then pick up when the macro is done?

Although I might not accurately grasp what you want to do, it
might be effective to set the w3m-async-exec variable to nil.

It is t by default, and the w3m-goto-url function returns
immediately without waiting to finish fetching the contents.
In that case, the keyboard-macro something like the following
will not work as expected:

M-x w3m-goto-url RET C-a C-k http://www.google.com RET
] RET emacs RET C-c C-c

OTOH, w3m-goto-url returns after preparing the page if
w3m-async-exec is set to nil.  So, the next one will work:

M-: (setq w3m-async-exec nil) RET
M-x w3m-goto-url RET C-a C-k http://www.google.com RET
] RET emacs RET C-c C-c
M-: (setq w3m-async-exec t) RET

Similarly, you can also use the `let' form to bind that variable
in your Lisp commands.  For instance:

(defun your-command ()
  (interactive)
  (let ((w3m-async-exec nil))
    (w3m-goto-url "http://www.google.com";)
    ...
    ))

HTH.