Raymond Toy writes:
[1] emacs-version said 1b054bc2ac40 so I did an hg update -r
1b054bc2ac40
and rebuilt in the new directory. Is that the right way to get that
version?
Yes, that is correct.
Customize works in the new build using the same options to
configure.
I am not entirely surprised. The problem is that Lisp is a twisty
maze of dependencies, all alike, and the only way to ensure that all
files needing to be rebuilt are rebuilt is a "make realclean" first.
("make beta" does this for you.) So if you are in the habit of doing
"hg pull -u; ./config.status --recheck; make" (which is normally quite
fast), you may end up with quite a bit of legacy bytecode after a
while.
In particular, if there is a change to the byte-compiler, obviously to
be 100% safe you need to recompile the world, but AFAICT we don't
force recompilation of everything in that case.
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