When trying to sync a file to XEmacs I stumbled on that GNU Emacs
since version 24.1 (June 10, 2012) has support for lexical binding. We
seem to have some support for lexical binding (lexical-let) but that
is about it. Anyone who has had a look at how much effort it would
take to implement lexical binding?
I guess my immediate sync problems can probably be solved by going
back before the 21.4 release but I fear this will potentially be a
major incompatibility problem for us?
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