;;; scheme.el --- Scheme (and DSSSL) editing mode
-;; Copyright (C) 1986-1988, 1997-1998, 2001-2011
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1986-1988, 1997-1998, 2001-2013 Free Software
+;; Foundation, Inc.
;; Author: Bill Rozas <jinx@martigny.ai.mit.edu>
;; Adapted-by: Dave Love <d.love@dl.ac.uk>
(defvar scheme-mode-syntax-table
(let ((st (make-syntax-table))
(i 0))
-
- ;; Default is atom-constituent.
- (while (< i 256)
+ ;; Symbol constituents
+ ;; We used to treat chars 128-256 as symbol-constituent, but they
+ ;; should be valid word constituents (Bug#8843). Note that valid
+ ;; identifier characters are Scheme-implementation dependent.
+ (while (< i ?0)
(modify-syntax-entry i "_ " st)
(setq i (1+ i)))
-
- ;; Word components.
- (setq i ?0)
- (while (<= i ?9)
- (modify-syntax-entry i "w " st)
+ (setq i (1+ ?9))
+ (while (< i ?A)
+ (modify-syntax-entry i "_ " st)
(setq i (1+ i)))
- (setq i ?A)
- (while (<= i ?Z)
- (modify-syntax-entry i "w " st)
+ (setq i (1+ ?Z))
+ (while (< i ?a)
+ (modify-syntax-entry i "_ " st)
(setq i (1+ i)))
- (setq i ?a)
- (while (<= i ?z)
- (modify-syntax-entry i "w " st)
+ (setq i (1+ ?z))
+ (while (< i 128)
+ (modify-syntax-entry i "_ " st)
(setq i (1+ i)))
;; Whitespace
(defun scheme-mode-variables ()
(set-syntax-table scheme-mode-syntax-table)
(setq local-abbrev-table scheme-mode-abbrev-table)
- (set (make-local-variable 'paragraph-start) (concat "$\\|" page-delimiter))
- (set (make-local-variable 'paragraph-separate) paragraph-start)
- (set (make-local-variable 'paragraph-ignore-fill-prefix) t)
- (set (make-local-variable 'fill-paragraph-function) 'lisp-fill-paragraph)
+ (setq-local paragraph-start (concat "$\\|" page-delimiter))
+ (setq-local paragraph-separate paragraph-start)
+ (setq-local paragraph-ignore-fill-prefix t)
+ (setq-local fill-paragraph-function 'lisp-fill-paragraph)
;; Adaptive fill mode gets in the way of auto-fill,
;; and should make no difference for explicit fill
;; because lisp-fill-paragraph should do the job.
- (set (make-local-variable 'adaptive-fill-mode) nil)
- (set (make-local-variable 'indent-line-function) 'lisp-indent-line)
- (set (make-local-variable 'parse-sexp-ignore-comments) t)
- (set (make-local-variable 'outline-regexp) ";;; \\|(....")
- (set (make-local-variable 'comment-start) ";")
- (set (make-local-variable 'comment-add) 1)
+ (setq-local adaptive-fill-mode nil)
+ (setq-local indent-line-function 'lisp-indent-line)
+ (setq-local parse-sexp-ignore-comments t)
+ (setq-local outline-regexp ";;; \\|(....")
+ (setq-local add-log-current-defun-function #'lisp-current-defun-name)
+ (setq-local comment-start ";")
+ (setq-local comment-add 1)
;; Look within the line for a ; following an even number of backslashes
;; after either a non-backslash or the line beginning.
- (set (make-local-variable 'comment-start-skip)
- "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+[ \t]*")
- (set (make-local-variable 'font-lock-comment-start-skip) ";+ *")
- (set (make-local-variable 'comment-column) 40)
- (set (make-local-variable 'parse-sexp-ignore-comments) t)
- (set (make-local-variable 'lisp-indent-function) 'scheme-indent-function)
+ (setq-local comment-start-skip
+ "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+[ \t]*")
+ (setq-local font-lock-comment-start-skip ";+ *")
+ (setq-local comment-column 40)
+ (setq-local parse-sexp-ignore-comments t)
+ (setq-local lisp-indent-function 'scheme-indent-function)
(setq mode-line-process '("" scheme-mode-line-process))
- (set (make-local-variable 'imenu-case-fold-search) t)
+ (setq-local imenu-case-fold-search t)
(setq imenu-generic-expression scheme-imenu-generic-expression)
- (set (make-local-variable 'imenu-syntax-alist)
+ (setq-local imenu-syntax-alist
'(("+-*/.<>=?!$%_&~^:" . "w")))
- (set (make-local-variable 'font-lock-defaults)
- '((scheme-font-lock-keywords
- scheme-font-lock-keywords-1 scheme-font-lock-keywords-2)
- nil t (("+-*/.<>=!?$%_&~^:" . "w") (?#. "w 14"))
- beginning-of-defun
- (font-lock-mark-block-function . mark-defun)
- (font-lock-syntactic-face-function
- . scheme-font-lock-syntactic-face-function)
- (parse-sexp-lookup-properties . t)
- (font-lock-extra-managed-props syntax-table)))
- (set (make-local-variable 'lisp-doc-string-elt-property)
- 'scheme-doc-string-elt))
+ (setq font-lock-defaults
+ '((scheme-font-lock-keywords
+ scheme-font-lock-keywords-1 scheme-font-lock-keywords-2)
+ nil t (("+-*/.<>=!?$%_&~^:" . "w") (?#. "w 14"))
+ beginning-of-defun
+ (font-lock-mark-block-function . mark-defun)
+ (font-lock-syntactic-face-function
+ . scheme-font-lock-syntactic-face-function)
+ (parse-sexp-lookup-properties . t)
+ (font-lock-extra-managed-props syntax-table)))
+ (setq-local lisp-doc-string-elt-property 'scheme-doc-string-elt))
(defvar scheme-mode-line-process "")
In addition, if an inferior Scheme process is running, some additional
commands will be defined, for evaluating expressions and controlling
the interpreter, and the state of the process will be displayed in the
-modeline of all Scheme buffers. The names of commands that interact
+mode line of all Scheme buffers. The names of commands that interact
with the Scheme process start with \"xscheme-\" if you use the MIT
Scheme-specific `xscheme' package; for more information see the
documentation for `xscheme-interaction-mode'. Use \\[run-scheme] to
(defcustom dsssl-sgml-declaration
"<!DOCTYPE style-sheet PUBLIC \"-//James Clark//DTD DSSSL Style Sheet//EN\">
"
- "*An SGML declaration for the DSSSL file.
+ "An SGML declaration for the DSSSL file.
If it is defined as a string this will be inserted into an empty buffer
which is in `dsssl-mode'. It is typically James Clark's style-sheet
doctype, as required for Jade."
;; This is shared by cmuscheme and xscheme.
(defcustom scheme-program-name "scheme"
- "*Program invoked by the `run-scheme' command."
+ "Program invoked by the `run-scheme' command."
:type 'string
:group 'scheme)
Entering this mode runs the hooks `scheme-mode-hook' and then
`dsssl-mode-hook' and inserts the value of `dsssl-sgml-declaration' if
that variable's value is a string."
- (set (make-local-variable 'page-delimiter) "^;;;") ; ^L not valid SGML char
+ (setq-local page-delimiter "^;;;") ; ^L not valid SGML char
;; Insert a suitable SGML declaration into an empty buffer.
;; FIXME: This should use `auto-insert-alist' instead.
(and (zerop (buffer-size))
nil t (("+-*/.<>=?$%_&~^:" . "w"))
beginning-of-defun
(font-lock-mark-block-function . mark-defun)))
- (set (make-local-variable 'imenu-case-fold-search) nil)
+ (setq-local add-log-current-defun-function #'lisp-current-defun-name)
+ (setq-local imenu-case-fold-search nil)
(setq imenu-generic-expression dsssl-imenu-generic-expression)
- (set (make-local-variable 'imenu-syntax-alist)
- '(("+-*/.<>=?$%_&~^:" . "w"))))
+ (setq-local imenu-syntax-alist '(("+-*/.<>=?$%_&~^:" . "w"))))
;; Extra syntax for DSSSL. This isn't separated from Scheme, but
;; shouldn't cause much trouble in scheme-mode.
\f
(defvar calculate-lisp-indent-last-sexp)
-;; Copied from lisp-indent-function, but with gets of
-;; scheme-indent-{function,hook}.
+
+;; FIXME this duplicates almost all of lisp-indent-function.
+;; Extract common code to a subroutine.
(defun scheme-indent-function (indent-point state)
+ "Scheme mode function for the value of the variable `lisp-indent-function'.
+This behaves like the function `lisp-indent-function', except that:
+
+i) it checks for a non-nil value of the property `scheme-indent-function'
+\(or the deprecated `scheme-indent-hook'), rather than `lisp-indent-function'.
+
+ii) if that property specifies a function, it is called with three
+arguments (not two), the third argument being the default (i.e., current)
+indentation."
(let ((normal-indent (current-column)))
(goto-char (1+ (elt state 1)))
(parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)