Eli Zaretskii <eliz@gnu.org> schrieb am Sa., 26. März 2016 um 19:08 Uhr:

> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Sat, 26 Mar 2016 17:31:46 +0000
> Cc: 23009-done@debbugs.gnu.org
>
> We still might consider solving the flicker problem for "no-conversion". Honestly I don't understand the
> behavior of the meta mode at all: it seems that for the purpose of read-char the meta-mode is completely
> ignored? If so, would it make sense to use set-keyboard-coding-system-internal, which doesn't appear to set
> the meta-mode?

Hmm... what does current-input-mode return on HTerm in "emacs -Q"?

(t nil 0 7)

I
expect to see a non-nil, non-t value in the 3rd element of its return
value. If that's so, then testing that value for identity with the
one we want to pass to set-input-meta-mode, and avoiding the latter
call if the mode is already what we want, might avoid the flickering.

Yes, that's already the case (set-input-meta-mode doesn't reinitialize the terminal if the meta mode doesn't change), and it's why I use latin-1 instead of no-conversion. With latin-1, a single mouse click results in 8 invocations of (set-input-meta-mode 8) (two mouse events with two coordinates each, and a set and reset per coordinate). With no-conversion, the same click results in four sequences of (set-input-meta-mode t) (set-input-meta-mode 8), which causes the flicker.