While testing a potential fix for issue #1250, I discovered that
using the altmeta option, to simulate typing Alt+x to get M-x via
typing 'ESC x', didn't work after a count prefixed by 'n' when in
number_pad mode. It did work as intended for !number_pad when a
repeat count prefix is entered via digits without 'n'.
This doesn't solve #1250, which also occurs for number_pad but not
for !number_pad.
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