(ps-mode): Make local bindings for `comment-start' and `comment-start-skip'.
(ps-mode-looking-at-nested): Simplify an if-else construct;
use `set-match-data' to set the result.
lambda expression.
(ps-mode-menu-main): Submenu with options on/off was replaced with
a toggle button.
(ps-mode, ps-run-mode): Define with `define-derived-mode'
(ps-mode): Autoload cookie added on same line as comment
(ps-mode-tabkey, ps-mode-backward-delete-char):
(ps-mode-r-balance): Replace `delete-horizontal-space' and
`indent-to' with `indent-line-to'
(ps-mode-print-buffer, ps-mode-print-region): Use `funcall'
instead of `eval'.
(ps-mode-print-region): Use `with-temp-buffer'.
(ps-run-start): Use of `mapconcat'. Use `apply' instead of
`eval'.
(numerous places): Add back-tick and tick around names in
docstrings, fix punctuation in docstrings, remove trailing spaces.
value: \"lpr\" changed to "lpr"
(ps-mode-version): New constant
(ps-mode-show-version): New function, added key in ps-mode-map
(ps-run-messages): Removed
(ps-run-font-lock-keywords-2): New defcustom variable replacing
ps-run-messages. These keywords now include the value of
ps-run-prompt, making its fontification customizable.
(ps-run-init): Removed \\n from docstring, it is now added when
the value is used
(ps-run-font-lock-keywords-1): Added checking for initial ^ in
ps-run-prompt
(ps-mode): Added ps-run-font-lock-keywords-2 to list of
customizable variables in doc-string (it's equivalent
ps-run-messages was missing in previous version of the doc-string)
(ps-run-mode): Simplified assignment to font-lock-defaults, using
symbols only
