Allow configuring which event throw-on-input should ignore (bug#19547).

* src/keyboard.c (kbd_buffer_store_buffered_event):
Translate event to corresponding symbol from `while-no-input-ignore-events`
and check them with Fmemq.
(syms_of_keyboard): Declare new lisp variable `while-no-input-ignore-events`
and its symbols.

* lisp/subr.el (while-no-input-ignore-events): Add default values.

* doc/lispref/commands.texi (Event Input Misc):
Document while-no-input-ignore-events.
* etc/NEWS: Same.

1 files changed, 4 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 0b73e5df7d0..cbce027e6d4 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -610,6 +610,10 @@ function 'check-declare-errmsg' has been removed.
 
 * Lisp Changes in Emacs 26.1
 
+** New variable 'while-no-input-ignore-events' which allow
+setting which special events 'while-no-input' should ignore.
+It is a list of symbols.
+
 ** New function 'undo-amalgamate-change-group' to get rid of
 undo-boundaries between two states.