Update copyright notices for 2013.

[bpt/emacs.git] / lisp / progmodes / scheme.el

diff --git a/lisp/progmodes/scheme.el b/lisp/progmodes/scheme.el
index fb135d7..a7dbc41 100644 (file)
--- a/lisp/progmodes/scheme.el
+++ b/lisp/progmodes/scheme.el
@@ -1,7 +1,7 @@
 ;;; scheme.el --- Scheme (and DSSSL) editing mode
 
-;; Copyright (C) 1986, 1987, 1988, 1997, 1998, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010, 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>
@@ -55,24 +55,24 @@
 (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
@@ -201,7 +201,7 @@ Editing commands are similar to those of `lisp-mode'.
 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
@@ -229,7 +229,7 @@ Set this to nil if you normally use another dialect."
 (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."
@@ -251,7 +251,7 @@ See `run-hooks'."
 
 ;; 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)
 
@@ -442,9 +442,19 @@ that variable's value is a string."
 \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)