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For those users who live backwards in time, here is information about downgrading to Emacs version 21.4. We hope you will enjoy the greater simplicity that results from the absence of many Emacs 23.0.50 features.
mode-line-inverse-video to control whether
mode lines are highlighted at all---nil means don't highlight
them.
setenv command does not expand `$' at all.
apropos-sort-by-scores has been removed.
backward-kill-sexp is now bound to C-M-delete
and C-M-backspace. Be careful when using these key sequences!
It may shut down your X server, or reboot your operating system.
set-mark-command-repeat-pop has been removed.
sentence-end has been eliminated in favor of a
more straightforward approach: directly setting the variable
sentence-end. For example, to end each sentence with a single
space, use
(setq sentence-end "[.?!][]\"')}]*\\($\\|[ \t]\\)[ \t\n]*") |
fill-nobreak-predicate is no longer customizable,
and it can only hold a single function.
nobreak-char-display has been removed.
yank-excluded-properties has been removed.
Info-fontify.
You can still use C-x v v to do these operations if you wish; its meaning is unchanged. If you want to control the buffer's read-only flag without performing any version control operation, use M-x toggle-read-only.
etags features for customizing parsing using regexps
have been removed.
server-mode
command and server-name user option have been eliminated.
quail-show-key, for showing how to input a
character, has been removed.
keyboard-coding-system is always
nil, regardless of your locale settings. If you want some
other value, set it yourself.
code-pages library, which contained various 8-bit coding
systems, has been removed.
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