;;; idlw-help.el --- HTML Help code for IDLWAVE
-;; Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+;; Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
;; Free Software Foundation, Inc.
;;
;; Authors: J.D. Smith <jdsmith@as.arizona.edu>
;;; Code:
(defvar idlwave-help-browse-url-available t
- "Whether browse-url is available")
+ "Whether browse-url is available.")
(require 'browse-url)
(if idlwave-html-help-pre-v6 "#" "#wp"))
(defcustom idlwave-html-system-help-location "help/online_help/"
- "The directory, relative to idlwave-system-directory, where the idl
+ "The directory, relative to `idlwave-system-directory', where the IDL
HTML help files live, for IDL 6.2 and later. This location, if found,
-is used in preference to the old idlwave-html-help-location."
+is used in preference to the old `idlwave-html-help-location'."
:group 'idlwave-online-help
:type 'directory)
nil
"/usr/local/etc/")
"The directory where the idl_html_help/ dir lives. Obsolete for IDL
-6.2 or later (see idlwave-html-system-help-location)."
+6.2 or later (see `idlwave-html-system-help-location')."
:group 'idlwave-online-help
:type 'directory)
:type 'boolean)
(defcustom idlwave-help-browser-function browse-url-browser-function
- "Function to use to display html help.
+ "Function to use to display HTML help.
Defaults to `browse-url-browser-function', which see."
:group 'idlwave-online-help
:type 'function)
(defcustom idlwave-help-browser-generic-program browse-url-generic-program
- "Program to run if using browse-url-generic-program."
+ "Program to run if using `browse-url-generic-program'."
:group 'idlwave-online-help
:type 'string)
(defcustom idlwave-help-browser-generic-args
(if (boundp 'browse-url-generic-args)
browse-url-generic-args "")
- "Program args to use if using browse-url-generic-program."
+ "Program args to use if using `browse-url-generic-program'."
:group 'idlwave-online-help
:type 'string)
:type 'boolean)
(defvar idlwave-help-directory ""
- "Obsolete variable. See idlwave-html-help-location.")
+ "Obsolete variable. See `idlwave-html-help-location'.")
(defcustom idlwave-help-use-dedicated-frame t
"*Non-nil means, use a separate frame for Online Help if possible."
"The default width of the help frame.")
(defvar idlwave-html-help-is-available nil
- "Is the system online help text avaiable?")
+ "Is the system online help text available?")
(defvar idlwave-help-mode-line-indicator ""
- "Used for the special mode line in the idlwave-help-mode.")
+ "Used for the special mode line in the `idlwave-help-mode'.")
(defvar idlwave-help-window-configuration nil)
(defvar idlwave-help-special-topic-words nil) ; defined by get_rinfo
;; Define the key bindings for the Help application
(defvar idlwave-help-mode-map (make-sparse-keymap)
- "The keymap used in idlwave-help-mode.")
+ "The keymap used in `idlwave-help-mode'.")
(define-key idlwave-help-mode-map "q" 'idlwave-help-quit)
(define-key idlwave-help-mode-map "w" 'widen)
Fontification: [F]ontify the buffer like source code
Jump: [h] to function doclib header
[H] to file doclib header
- [.] back and forward between header and definition
+ [.] back and forth between header and definition
Here are all keybindings.
\\{idlwave-help-mode-map}"
(defvar idlwave-experimental)
(defvar idlwave-last-context-help-pos)
(defun idlwave-do-context-help (&optional arg)
- "Wrapper around the call to idlwave-context-help1.
+ "Wrapper around the call to `idlwave-do-context-help1'.
It collects and prints the diagnostics messages."
(let ((marker (list (current-buffer) (point)))
(idlwave-help-diagnostics nil))
"Display HTML or other special help on a certain topic.
Either loads an HTML link, if LINK is non-nil, or gets special-help on
the optional arguments, if any special help is defined. If LINK is
-`t', first look up the optional arguments in the routine info list to
+t, first look up the optional arguments in the routine info list to
see if a link is set for it. Try extra help functions if necessary."
;; Lookup link
(if (eq link t)
(defun idlwave-help-get-special-help (name type class keyword)
"Call the function given by `idlwave-extra-help-function'."
(let* ((cw (selected-window))
- (help-pos (save-excursion
- (set-buffer (idlwave-help-get-help-buffer))
+ (help-pos (with-current-buffer (idlwave-help-get-help-buffer)
(let ((buffer-read-only nil))
(funcall idlwave-extra-help-function
name type class keyword)))))
(select-window cw)))
(defun idlwave-help-html-link (link)
- "Get html help on a given LINK."
+ "Get HTML help on a given LINK."
(let ((browse-url-browser-function idlwave-help-browser-function)
(help-loc (idlwave-html-help-location))
(browse-url-generic-program idlwave-help-browser-generic-program)
(defvar idlwave-current-tags-buffer)
(defvar idlwave-current-tags-class)
(defun idlwave-help-with-source (name type class keyword)
- "Provide help for routines not documented in the IDL manuals. Works
-by loading the routine source file into the help buffer. Depending on
-the value of `idlwave-help-source-try-header', it attempts to show the
-routine definition or the header description. If
-`idlwave-help-do-class-struct-tag' is non-nil, keyword is a tag to
-show help on from the class definition structure. If
-`idlwave-help-do-struct-tag' is non-nil, show help from the matching
-structure tag definition.
+ "Provide help for routines not documented in the IDL manuals.
+Works by loading the routine source file into the help buffer.
+Depending on the value of `idlwave-help-source-try-header', it
+attempts to show the routine definition or the header description.
+If `idlwave-help-do-class-struct-tag' is non-nil, keyword is a tag
+to show help on from the class definition structure.
+If `idlwave-help-do-struct-tag' is non-nil, show help from the
+matching structure tag definition.
This function can be used as `idlwave-extra-help-function'."
(let* ((class-struct-tag idlwave-help-do-class-struct-tag)
(defun idlwave-help-find-routine-definition (name type class keyword)
"Find the definition of routine CLASS::NAME in current buffer.
-KEYWORD is ignored. Returns the point of match if successful, nil otherwise."
+Returns the point of match if successful, nil otherwise.
+KEYWORD is ignored."
(save-excursion
(goto-char (point-max))
(if (re-search-backward
"(help location unknown)")))
(defun idlwave-help-show-help-frame ()
- "Show the help frame, creating it if necessary"
+ "Show the help frame, creating it if necessary."
;; Use a special frame for this
(unless (frame-live-p idlwave-help-frame)
(setq idlwave-help-frame
(if buf
nil
(setq buf (get-buffer-create "*IDLWAVE Help*"))
- (save-excursion
- (set-buffer buf)
+ (with-current-buffer buf
(idlwave-help-mode)))
buf))
(if (memq system-type '(ms-dos windows-nt))
"bin/bin.x86/idl_assistant.exe"
"bin/idl_assistant")
- "The command, rooted at idlwave-system-directory, which invokes the
+ "The command, rooted at `idlwave-system-directory', which invokes the
IDL assistant.")
(defun idlwave-help-assistant-available ()
(unless (accept-process-output idlwave-help-assistant-process 15)
(error "Failed binding IDL_ASSISTANT socket"))
(if (not port)
- (error "Unable to open IDL_ASSISTANT.")
+ (error "Unable to open IDL_ASSISTANT")
(set-process-filter idlwave-help-assistant-process nil)
(setq idlwave-help-assistant-socket
(open-network-stream "IDL_ASSISTANT_SOCK"