\f
* Changes in Emacs 21.4
++++
+** In processing a local variables list, Emacs strips the prefix and
+suffix are from every line before processing all the lines.
+
++++
+** `apply-macro-to-region-lines' now operates on all lines that begin
+in the region, rather than on all complete lines in the region.
+
+** global-whitespace-mode is a new alias for whitespace-global-mode.
+
+++
** There are now two new regular expression operators, \_< and \_>,
for matching the beginning and end of a symbol. A symbol is a
rule applies to file buffers. For non-file buffers, the behavior may
be mode dependent.
+If you are sure that the file will only change by growing at the end,
+then you can tail the file more efficiently by using the new minor
+mode Auto Revert Tail mode. The function `auto-revert-tail-mode'
+toggles this mode.
+
** Auto Revert mode is now more careful to avoid excessive reverts and
other potential problems when deciding which non-file buffers to
revert. This matters especially if Global Auto Revert mode is enabled
The new file etc/compilation.txt gives examples of each type of message.
-** M-x grep has been adapted to new compile
+** Compilation mode enhancements:
+
++++
+*** New user option `compilation-environment'.
+This option allows you to specify environment variables for inferior
+compilation processes without affecting the environment that all
+subprocesses inherit.
+
+** Grep has been decoupled from compilation mode setup.
+
+*** There's a new separate package grep.el.
+
+*** M-x grep has been adapted to new compile
Hits are fontified in green, and hits in binary files in orange. Grep buffers
can be saved and automatically revisited with the new Grep mode.
+*** Grep commands now have their own submenu and customization group.
+
+*** The new variables `grep-window-height', `grep-auto-highlight', and
+`grep-scroll-output' can be used to override the corresponding
+compilation mode settings for grep commands.
+
+*** New option `grep-highlight-matches' highlightes matches in *grep*
+buffer. It uses a special feature of some grep programs which accept
+--color option to output markers around matches. When going to the next
+match with `next-error' the exact match is highlighted in the source
+buffer. Otherwise, if `grep-highlight-matches' is nil, the whole
+source line is highlighted.
+
+*** New key bindings in grep output window:
+SPC and DEL scrolls window up and down. C-n and C-p moves to next and
+previous match in the grep window. RET jumps to the source line of
+the current match. `n' and `p' shows next and previous match in
+other window, but does not switch buffer. `{' and `}' jumps to the
+previous or next file in the grep output. TAB also jumps to the next
+file.
+
+** New options `next-error-highlight' and `next-error-highlight-no-select'
+specify the method of highlighting of the corresponding source line
+in new face `next-error'.
+
+** A new minor mode `next-error-follow-minor-mode' can be used in
+compilation-mode, grep-mode, occur-mode, and diff-mode (i.e. all the
+modes that can use `next-error'). In this mode, cursor motion in the
+buffer causes automatic display in another window of the corresponding
+matches, compilation errors, etc. This minor mode can be toggled with
+C-c C-f.
+
** M-x diff uses diff-mode instead of compilation-mode.
** M-x compare-windows now can automatically skip non-matching text to
the stroke directly to a string to insert. This is convenient for
using strokes as an input method.
+** Gnus package
+
+*** Gnus now includes Sieve and PGG
+Sieve is a library for managing Sieve scripts. PGG is a library to handle
+PGP/MIME.
+
+*** There are many news features, bug fixes and improvements.
+See the file GNUS-NEWS or the node "Oort Gnus" in the Gnus manual for details.
+
+++
** Desktop package
*** A numeric prefix argument of `info' selects an Info buffer
with the number appended to the *info* buffer name.
+*** Regexp isearch (C-M-s and C-M-r) can search through multiple nodes.
+Failed isearch wraps to the top/final node.
+
+*** New search commands: `Info-search-case-sensitively' (bound to S),
+`Info-search-backward', and `Info-search-next' which repeats the last
+search without prompting for a new search string.
+
*** New command `Info-history' (bound to L) displays a menu of visited nodes.
*** New command `Info-toc' (bound to T) creates a node with table of contents
the current Info node name into the kill ring. With a zero prefix
arg, puts the node name inside the `info' function call.
-*** New command `Info-search-case-sensitively' (bound to S).
-
-*** New command `Info-search-next' (unbound) repeats the last search
-without prompting for a new search string.
-
*** New face `info-xref-visited' distinguishes visited nodes from unvisited
and a new option `Info-fontify-visited-nodes' to control this.
'sql-sqlite'.
** BibTeX mode:
+*** The new command bibtex-url browses a URL for the BibTeX entry at
+point (bound to C-c C-l and mouse-2 on clickable fields).
*** The new command bibtex-entry-update (bound to C-c C-u) updates
an existing BibTeX entry.
*** New `bibtex-entry-format' option `required-fields', enabled by default.
** MH-E changes.
-Upgraded to MH-E version 7.4.4. There have been major changes since
+Upgraded to MH-E version 7.82. There have been major changes since
version 5.0.2; see MH-E-NEWS for details.
+++
and to type `C-f' at the end of the search string in the minibuffer.
+++
-** M-% and C-M-% typed in isearch mode invoke `query-replace' and
-`query-replace-regexp' with the current search string inserted
-in the minibuffer as initial input for the string to replace.
+** M-% typed in isearch mode invokes `query-replace' or
+`query-replace-regexp' (depending on search mode) with the current
+search string used as the string to replace.
+
++++
+** Isearch no longer adds `isearch-resume' commands to the command
+history by default. To enable this feature, customize the new
+user option `isearch-resume-in-command-history'.
+
++++
+** New user option `history-delete-duplicates'.
+If set to t when adding a new history element, all previous identical
+elements are deleted.
+++
** Yanking text now discards certain text properties that can
**** The `::' qualifier triggers C++ parsing in C file.
Previously, only the `template' and `class' keywords had this effect.
+**** The gnucc __attribute__ keyword is now recognised and ignored.
+
+**** New language HTML.
+Title and h1, h2, h3 are tagged. Also, tags are generated when name= is
+used inside an anchor and whenever id= is used.
+
+**** In Makefiles, constants are tagged.
+If you want the old behavior instead, thus avoiding to increase the
+size of the tags file, use the --no-globals option.
+
+**** New language Lua.
+All functions are tagged.
+
**** In Perl, packages are tags.
Subroutine tags are named from their package. You can jump to sub tags
as you did before, by the sub name, or additionally by looking for
package::sub.
+**** In Prolog, etags creates tags for rules in addition to predicates.
+
**** New language PHP.
Tags are functions, classes and defines.
-If the --members option is specified to etags, tags are vars also.
-
-**** New language HTML.
-Title and h1, h2, h3 are tagged. Also, tags are generated when name= is
-used inside an anchor and whenever id= is used.
+If the --members option is specified to etags, tags are variables also.
**** New default keywords for TeX.
The new keywords are def, newcommand, renewcommand, newenvironment and
renewenvironment.
-**** In Makefiles, constants are tagged.
-If you want the old behavior instead, thus avoiding to increase the
-size of the tags file, use the --no-globals option.
-
-**** In Prolog, etags creates tags for rules in addition to predicates.
-
*** Honour #line directives.
When Etags parses an input file that contains C preprocessor's #line
directives, it creates tags using the file name and line number
*** New option --parse-stdin=FILE.
This option is mostly useful when calling etags from programs. It can
be used (only once) in place of a file name on the command line. Etags
-reads from standard input and mark the produced tags as belonging to
+reads from standard input and marks the produced tags as belonging to
the file FILE.
+++
+++
** `xml-mode' is now an alias for `sgml-mode', which has XML support.
-+++
-** New user option `isearch-resume-enabled'.
-This option can be disabled, to avoid the normal behavior of isearch
-which puts calls to `isearch-resume' in the command history.
-
---
** Lisp mode now uses font-lock-doc-face for the docstrings.
When loading many files, for instance with `emacs *', Emacs normally
displays a buffer menu. This option turns the buffer menu off.
-** Compilation mode enhancements:
-
-*** New user option `compilation-environment'.
-This option allows you to specify environment variables for inferior
-compilation processes without affecting the environment that all
-subprocesses inherit.
-
-*** `next-error' now temporarily highlights the corresponding source line.
-
-** Grep has been decoupled from compilation mode setup.
-
-*** There's a new separate package grep.el.
-
-*** Grep commands now have their own submenu and customization group.
-
-*** The new variables `grep-window-height', `grep-auto-highlight', and
-`grep-scroll-output' can be used to override the corresponding
-compilation mode settings for grep commands.
-
-*** Source line is temporarily highlighted when going to next match.
-
-*** New key bindings in grep output window:
-SPC and DEL scrolls window up and down. C-n and C-p moves to next and
-previous match in the grep window. RET jumps to the source line of
-the current match. `n' and `p' shows next and previous match in
-other window, but does not switch buffer. `{' and `}' jumps to the
-previous or next file in the grep output. TAB also jumps to the next
-file.
-
---
** Rmail now displays 5-digit message ids in its summary buffer.
\f
* New modes and packages in Emacs 21.4
+** The new package dns-mode.el add syntax highlight of DNS master files.
+The key binding C-c C-s (`dns-mode-soa-increment-serial') can be used
+to increment the SOA serial.
+
** The new package flymake.el does on-the-fly syntax checking of program
source files. See the Flymake's Info manual for more details.
of hierarchical data as an outline. For example, the tree-widget is
well suited to display a hierarchy of directories and files.
-** The wdired.el package allows you to use normal editing commands on dired
+** The wdired.el package allows you to use normal editing commands on Dired
buffers to change filenames, permissions, etc...
+** The thumbs.el package allows you to preview image files as thumbnails
+and can be invoked from a Dired buffer.
+
** The new python.el package is used to edit Python and Jython programs.
** The URL package (which had been part of W3) is now part of Emacs.
\f
* Lisp Changes in Emacs 21.4
+** Major mode functions now run the new normal hook
+`after-change-major-mode-hook', at their very end, after the mode hooks.
+
++++
+** `auto-save-file-format' has been renamed to
+`buffer-auto-save-file-format' and made into a permanent local.
+
++++
+** Both the variable and the function `disabled-command-hook' have
+been renamed to `disabled-command-function'. The variable
+`disabled-command-hook' has been kept as an obsolete alias.
+
** Function `compute-motion' now calculates the usable window
width if the WIDTH argument is nil. If the TOPOS argument is nil,
the usable window height and width is used.
The form `(+ EXPR ...)' adds up the value of the expressions.
The form `(- EXPR ...)' negates or subtracts the value of the expressions.
+** Normally, the cursor is displayed at the end of any overlay and
+text property string that may be present at the current window
+position. The cursor may now be placed on any character of such
+strings by giving that character a non-nil `cursor' text property.
+
** New macro with-local-quit temporarily sets inhibit-quit to nil for use
around potentially blocking or long-running code in timers
and post-command-hooks.
#!/usr/bin/emacs --script
+** The option --directory DIR now modifies `load-path' immediately.
+Directories are added to the front of `load-path' in the order they
+appear on the command line. For example, with this command line:
+
+ emacs -batch -L .. -L /tmp --eval "(require 'foo)"
+
+Emacs looks for library `foo' in the parent directory, then in /tmp, then
+in the other directories in `load-path'. (-L is short for --directory.)
+
+++
** A function's docstring can now hold the function's usage info on
its last line. It should match the regexp "\n\n(fn.*)\\'".
The new low-level functions process-plist and set-process-plist are
used to access and replace the entire property list of a process.
-???
+*** Function accept-process-output now has an optional fourth arg
+`just-this-one'. If non-nil, only output from the specified process
+is handled, suspending output from other processes. If value is an
+integer, also inhibit running timers. This feature is generally not
+recommended, but may be necessary for specific applications, such as
+speech synthesis.
+
*** Adaptive read buffering of subprocess output.
On some systems, when emacs reads the output from a subprocess, the