Re: set-frame-parameter a child-frame's 'parent-frame error on macOS ?

[Feng Shu]

> I recall having had a discussion with someone who insisted on using
> `set-frame-position' immediately after making a new frame with the
> argument that it always used to work.  In my experience this may
> confuse the hell out of the window manager and even if it does work
> for years it may cease to do so after an update of your system.  As a
> rule, I try to position a frame initially only via parameters passed
> to `make-frame'.

company-childframe only need positioning an existing child-frame,
not need "immediately positioning a frame after it is created."



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