bug#31692: Emacs sometimes drops key events

[Eli Zaretskii]

On June 5, 2018 5:41:02 AM GMT+03:00, Radon Rosborough <radon.neon@gmail.com> 
wrote:
> > If you are saying that aggressive-indent-mode is the culprit, then
> > this bug should be reported to its developer(s).
> 
> Are you saying that the output of the test snippet is as expected, and
> not a bug? It seems odd to me that `while-no-input' causes the key
> event to be dropped.

My reading of the documentation of while-no-input is that yes, this
is the expected behavior.  The description in the ELisp manual is
especially explicit about "quit-like" effect of early arrival of
input.  And the implementation clearly means what we observe.