Enter is also how a Japanese, Chinese or Korean input method commits the
candidate being composed. That keystroke means "accept this word", not
"new line", so the shortcut fired on every word such a user finished —
enlarging the field and inserting a stray newline each time.
Guard on event.nativeEvent.isComposing. The test pairs the composing case
with a negative control dispatching the same event with the flag off, so
a test that stopped reaching the handler cannot pass for the wrong reason.
Signed-off-by: cliffhall <cliff@futurescale.com>
f02a6161e4