bug#25355: 26.0.50; Provide function to non-destructively replace buffer contents

[Glenn Morris]

Philipp Stephani wrote:

> I just want to link it statically by adding the required source files to
> the source tree, like we do for e.g. oldXmenu.

Please bear in mind that the negative aspects of this, as summarized at
eg https://wiki.gentoo.org/wiki/Why_not_bundle_dependencies

IMO oldXmenu is not a useful comparison because:
1) it doesn't exist as a separate entity any more
2) few (to no?) Emacs builds actually use it in practice
3) it's basically historical baggage that should be removed from Emacs
(but removing things from Emacs is difficult).