\f
* Changes in Emacs 21.4
+** line-move-ignore-invisible now defaults to t.
+
** In Outline mode, hide-body no longer hides lines at the top
of the file that precede the first header line.
+++
** `set-auto-mode' now gives the interpreter magic line (if present)
precedence over the file name. Likewise an <?xml or <!DOCTYPE declaration
-will give the buffer XML or SGML mode, unless the file name leads to a mode in
-`xml-based-modes'.
+will give the buffer XML or SGML mode, based on the new var
+`magic-mode-alist'.
+++
** New function `looking-back' checks whether a regular expression matches
point according to context (bound to M-tab).
*** The new commands bibtex-find-entry and bibtex-find-crossref
-locate entries and crossref'd entries. Crossref fields are clickable
-(bound to mouse-2, RET).
+locate entries and crossref'd entries (bound to C-c C-s and C-c C-x).
+Crossref fields are clickable (bound to mouse-2, RET).
*** In BibTeX mode the command fill-paragraph (bound to M-q) fills
individual fields of a BibTeX entry.
-*** The new command bibtex-validate-globally checks for duplicate keys
-in multiple BibTeX files. See also the new variables bibtex-files
-and bibtex-file-path.
+*** The new variables bibtex-files and bibtex-file-path define a set
+of BibTeX files that are searched for entry keys.
-*** The new command bibtex-find-entry-globally searches BibTeX entries
+*** The new command bibtex-validate-globally checks for duplicate keys
in multiple BibTeX files.
*** The new command bibtex-copy-summary-as-kill pushes summary
+++
** For Gtk+ version 2.4, you can make Emacs use the old file dialog
-by setting the variable `use-old-gtk-file-dialog' to t. Default is to use
+by setting the variable `x-use-old-gtk-file-dialog' to t. Default is to use
the new dialog.
+++
It cannot deal with every code format, but ought to handle a sizeable
majority.
+---
+** The new function `f90-backslash-not-special' can be used to change
+the syntax of backslashes in F90 buffers.
+
---
** Prolog mode has a new variable `prolog-font-lock-keywords'
to support use of font-lock.
\f
* New modes and packages in Emacs 21.4
+** The new package conf-mode.el handles thousands of configuration files, with
+varying syntaxes for comments (;, #, //, /* */ or !), assignment (var = value,
+var : value, var value or keyword var value) and sections ([section] or
+section { }). Many files under /etc/, or with suffixes like .cf through
+.config, .properties (Java), .desktop (KDE/Gnome), .ini and many others are
+recognized.
+
** The new package password.el provide a password cache and expiring mechanism.
** The new package dns-mode.el add syntax highlight of DNS master files.
\f
* Lisp Changes in Emacs 21.4
++++
+** read-from-minibuffer now accepts an additional argument KEEP-ALL
+saying to put all inputs in the history list, even empty ones.
+
++++
+** The new variable search-spaces-regexp controls how to search
+for spaces in a regular expression. If it is non-nil, it should be a
+regular expression, and any series of spaces stands for that regular
+expression. If it is nil, spaces stand for themselves.
+
+Spaces inside of constructs such as [..] and *, +, ? are never
+replaced with search-spaces-regexp.
+
+---
+** list-buffers-noselect now takes an additional argument, BUFFER-LIST.
+If it is non-nil, it specifies which buffers to list.
+
+---
+** set-buffer-file-coding-system now takes an additional argument,
+NOMODIFY. If it is non-nil, it means don't mark the buffer modified.
+
++++
+** The new function syntax-after returns the syntax code
+of the character after a specified buffer position, taking account
+of text properties as well as the character code.
+
++++
+** The new primitive `get-internal-run-time' returns the processor
+run time used by Emacs since start-up.
+
+++
** The new function `called-interactively-p' does what many people
-have mistakenly believed `interactively-p' did: it returns t if the
-calling function was called through `call-interactively'.
-This should only be used when you cannot add a new "interactively"
-argument to the command.
+have mistakenly believed `interactive-p' did: it returns t if the
+calling function was called through `call-interactively'. This should
+only be used when you cannot add a new "interactive" argument to the
+command.
+
++++
+** The new function `assoc-string' replaces `assoc-ignore-case' and
+`assoc-ignore-representation', which are still available, but have
+been declared obsolete.
+++
** An interactive specification may now use the code letter 'U' to get
modification times. Magic file name handlers can handle this
operation.
-** file-remote-p now returns an identifier for the remote system,
-if the file is indeed remote. (Before, the return value was t in
-this case.)
-
+++
** The display space :width and :align-to text properties are now
supported on text terminals.
** The new function `file-remote-p' tests a file name and returns
non-nil if it specifies a remote file (one that Emacs accesses using
its own special methods and not directly through the file system).
+The value in that case is an identifier for the remote file system.
---
** When a Lisp file uses CL functions at run-time, compiling the file
This returns the mode-line or header-line of the selected (or a
specified) window as a string with or without text properties.
++++
+** New function safe-plist-get.
+
+This function is like plist-get, but never signals an error for
+a malformed property list.
+
+++
** New functions `lax-plist-get' and `lax-plist-put'.