(comment-normalize-vars): Set default (cdr comment-continue)
(comment-end-quote-re): new function taken out of `comment-region-internal'
(uncomment-region): Rewritten using syntax-tables. Also unquotes
nested comment-ends and eliminates continuation markers.
(comment-region-internal): Don't create a default for cce.
Use `comment-end-quote-re'.
(comment-with-narrowing): New macro. Provides a way to preserve
indentation inside narrowing.
(comment-region-internal): Add "\n" to close the comment if necessary.
Correctly handle commenting-out when BEG is not bolp.
- uncomment-region doesn't work for some unknown reason
- comment-multi-line allows the use of multi line comments
- comment-extra-lines allows yet another style choice
- comment-add allows to default to `;;'
- comment-region on a comment calls uncomment-region
- C-u C-u comment-region aligns comment end markers
- C-u C-u C-u comment-region puts the comment inside a rectangle
