[Vimprobable-users] [Patch] Slightly more intelligent focus handling

[Hannes S. <ha...@yl...>]

As a followup to the new "escapeinput" setting, here is what I hope to
be a little improvement. The logic is basically in the second hunk of
the attached patch. Even if "escapeinput" is set, there are a few new
checks performed before simply snatching focus away from whereever it
is:

1. If Javascript is not active, do nothing (rationale: the problem
   for which this setting is meant cannot occur).
2. If some website element has been focused manually in the meantime by
   the user, do nothing.
3. If the input box has been activated, do nothing.

The second one could still be a source of problems. For example, if the
user manually focused an element while loading the page and *then*,
some javascript grabbed focus, the desired effect of "escapeinput" will
not occur. That, however, would again only be possible to prevent if we
could detect focus stealing events defined on the website, and if we
managed to do that, we wouldn't need this logic anyway.

Let me know what you think and whether you can think of any cases which
aren't covered by the new logic yet (i.e. when the browser does not
behave as it should - taking focus away or focusing something when it
shouldn't).

Hannes