Subject: bug#44107: set-window-dedicated-p: args should be marked as optional

From: Boruch Baum <[email-masked]>
Date: Tue, 20 Oct 2020 18:55:32 -0400

The definition for function `set-window-dedicated-p' indicates that its
two arguments are required, but the docstring indicates that the
arguments are optional. I haven't looked at the C source code, but my
testing indicates that the arguments really are optional, so the
description should mark them as such, ie.

  (set-window-dedicated-p &optional WINDOW FLAG)

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