Put defcustom's into this group.
(scheme-mode-commands): Remove keybinding of \t to old `scheme-indent-line'.
Bind \e\C-q to `indent-sexp', not `scheme-indent-sexp'.
(scheme-mit-dialect): Use defcustom.
(dsssl-sgml-declaration): Likewise. Fix doc string.
(dsssl-mode): Use stringp to check dsssl-sgml-declaration.
(style, root): Put scheme-indent-function 1.
(dsssl-font-lock-keywords): Use make-regexp version.
lisp-mode as much as possible.
(scheme-mode-variables): Copy filling stuff from lisp-mode.
Add an outline-regexp.
(scheme-mode-map): Inherit shared-lisp-mode-map and provide a menu.
(dsssl-sgml-declaration): New variable.
(dsssl-mode): New command.
(dsssl-font-lock-keywords): New variable.
(scheme-indent-function): Near copy of lisp-indent-function.
(scheme-comment-indent, scheme-indent-offset,
scheme-indent-function, scheme-indent-line,
calculate-scheme-indent, scheme-indent-specform,
scheme-indent-defform, scheme-indent-sexp): Removed; use lisp-mode
equivalents.
(scheme-imenu-generic-expression): New variable.
(dsssl-imenu-generic-expression): New variable.
(scheme-let-indent): Use lisp-indent-specform.
