bug#9054: 24.0.50; show source in other window

[Lars Ingebrigtsen]

Florian Beck <abstraktion@t-online.de> writes:

> What I would like: Either a function that displays the source for the
> function at point in the other window or for the *Help* buffer to open
> the source file in the same window (i.e. the window which displays the
> *Help* buffer).

I've now introduced a `help-window-keep-selected' user option in Emacs
29.  When enabled, these commands will reuse the *Help* window.

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