GVIM: alt/meta keys: inconsistent results for getchar(0)

Hi!

When I run this code in Windows GVIM and press, e.g., <m-down> in a row:

sleep 1|for i in range(10) | echo string(getchar(0)) | sleep 50m | endfor

I get a mix of '<80><fc>^H<80>ku' and '<80><fc>^H'.

When I increase the timeout to 150m, I get only '<80><fc>^H<80>ku', which seems correct.

Is this expected? Is it a bug? Is there another way to make sure I get the right key code other that using sleep?

Regards,
Tom

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