> Why "days"? how many Lisp files do you have that it could take "days"
> top byte-compile them?
Days to make everything work, not days to compile, but yes I do have
quite a bit of additional files more than 300 I would say, that includes
old pkg like bbdb-2.35, for which I have written various hacks, that do
not work in more modern bbdb version mostly because of renaming
variables and functions.

> toggle-read-only is obsolete since Emacs 24, i.e. for the last 12
> years.


> No, not easier.


> Which is why we do it very sparingly and always after a very long
> period of obsolescence.  Many people think we are too conservative.

For me this is not too conservative. 

But why, instead of deleting after a while the 
defalias, define-obsolete-variable-alias, defvaralias etc
not moving them into a file compat-obsolete.el or something like this?

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