@itemize @w{}

Changes/New Features in 5.4:
@itemize @bullet
@item @ESS{[SAS]}: The long overdue change
from @code{make-regexp} to @code{regexp-opt} for font-locking is
complete.  The new @code{regexp-opt} is now the default since
it is better than the old code in many ways (and especially more
maintainable).  However, there are certainly some special
cases missed (bug reports and patches welcome!).
Setting @code{ess-sas-run-regexp-opt} to @code{nil} will result
in the old code being used.
@item @ESS{[BUGS]} and @ESS{[JAGS]}: typing @code{=} now results in
 @code{<-}.
@item @ESS{[R]} function arguments ``show'' @code{(ess-r-args-show)} now
 uses the new @code{(tooltip-show-at-point)} contributed by Erik Iverson.
@item Toolbar icons now also work in (beta) Emacs 23.
@item @ESS{[S]}: New function @code{ess-change-directory} for setting both
 emacs' current directory and the directory of an *R* or *S* buffer.
@item @ESS{[S]} when transient-mark-mode is true, the mark is now kept,
 rather than deactivated, thanks to a patch from David Reitter.
@end itemize

Changes/New Features in 5.3.11:
@itemize @bullet
@item @ESS{[SAS]}: work around bug in Emacs 22.2 & 22.3 which fails to
 set case-fold fontification automatically.
@item Rd mode: support new keyword 'Rdversion'
@item @ESS{[R]}: now again works with Emacs 21.x
@end itemize

Changes/New Features in 5.3.10:
@itemize @bullet
@item Fixed noweb-mode bug accidentally introduced into 5.3.9
@item In noweb-mode, e.g., Rnw-mode, electric ``<'' also inserts closing ``@@".
 Further, the code chunk boundaries are better kept up-to-date, such that
 code[R] <-> text[LaTeX] minor mode switching should happen more reliably.
@item In noweb-mode, fix a buglet in rare [Enter] or [Tab] behavior; further,
 by default disable the former `[[' .. `]]'  code-protection-when-filling
 behavior which has been found to be buggy.
@end itemize

Changes/New Features in 5.3.9:
@itemize @bullet
@item @ESS{[SAS]}: evince PDF viewer now supported as well; search order:
evince, Xpdf, Adobe/Acrobat Reader
@item @ESS{[R]}: added support for Roxygen, potentially to be extended.
@item @ESS{[S]} (and R): inferior (@code{*R*}) and transcript modes no longer
fontify language keywords (such as @code{for}, @code{in}, etc).
@item @iESS{[Stata]}: Customize the @code{ess-sta-delimiter-friendly} setting
to @code{t} to convert embedded semi-colons to newlines for Stata processing.
@item Sweave fix for embedded blanks in PDF reader and PDF files
@item Several fixes for Major Mode Convention violations in @code{ess-mode}
and @code{noweb-mode}.
@item @ESS{[JAGS]}: @code{M-x comment-region} now available!
@item @ESS{[S]} The @code{ess-swv-*} commands (and keybindings) are now in
a submenu of the ``Noweb'' menu, when editing Sweave files.
@end itemize

Changes/New Features in 5.3.8:
@itemize @bullet
@item @ESS{[JAGS]}: more separation from @ESS{[BUGS]} (as much as is currently planned);
now @kbd{C-c C-c} on an empty @file{.jmd} creates a template as it should;
symbolic links are created for CODA output so BOA is happy:
from @file{index.txt} to @file{.ind} and @file{chain#.txt} to @file{#.out}
@item @ESS{[SAS]}: buffer-local @code{ess-sas-submit-command} and
@code{ess-sas-submit-command-options} now recognized by @code{ess-sas-submit-region}
@item @ESS{[S]}: When trying to evaluate code in an S language buffer and
 there is no associated process, now start R automatically instead of
 signalling an error.  Also, restart R if there is an associated process
 which is not running.  However, do not start R just via the ``electric''
 @kbd{(} (@code{ess-r-args-auto-show}).
@item @ESS{[S]}: For (one-line) functions withOUT '@{ .. @}' bodys, the end
 of function is now correctly found more often.  This notably improves
 @kbd{C-c C-c} (@code{ess-eval-function-or-paragraph-and-step}).
@item @ESS{[JAGS]}: cleanup/re-organization of elisp code;
symbolic links for CODA output are now only created by the new
JAGS @code{system} command in version 1.0.3; specify whether
this command is available via @code{ess-jags-system}; if not
present, then no links are created so that the @code{*shell*}
buffer does not become unresponsive during the batch run
@end itemize

Changes/New Features in 5.3.7:
@itemize @bullet
@item @ESS{}: @code{ess-default-style} now *is* customizable, i.e.,
  changing its value in @file{~/.emacs} now does have the desired effect.
@item @ESS{}: @code{ess-font-lock-mode} is a new variable (default: t)
which controls whether font-locking is enabled in ESS buffers.
@item @ESS{[R]}: for XEmacs on Windows; another tweak to find R versions
@item @ESS{[SAS]}: font-locking updated for ODS and SAS Bayesian Procedures;
a more consistent handling of SAS options by
@code{ess-sas-submit-command-options} which is buffer-local; portable
snooze for MS Windows via customize-able @code{ess-sleep-for} (floats welcome);
Xpdf now supported as a PDF viewer
@item @ESS{[Rnw]}: now also works with ``emacs -nw'' and Emacs 22.
@item @ESS{[JAGS]}: now requires JAGS 1.0 (see the new ESS for JAGS help
section for more information): both need work; suggestions welcome
@item @ESS{[R]}: [TAB] completion now uses the R-internal completion
mechanism (for R >= 2.5.0).
@item @ESS{[R], [S]}: interpretation of ``_'' as assignment has
been removed in @code{ess-continued-statement-p} for R and S.
@item several internal code cleanups.
@item @ESS{[R]}: An experimental version of a new command @code{Rgui}
on MS Windows to send lines directly from emacs
to @code{Rgui} is available in file @code{lisp/essd-rgui.el}.
Preliminary documentation is in file @code{doc/rgui-doc.txt}.
@end itemize

Changes/New Features in 5.3.6:
@itemize @bullet
@item @ESS{}: for XEmacs, using ``gnuclient'' (without a ``-q'') works for
 things like fix() after M-x gnuserv-start has been done.
@item @ESS{[R]}: M-x R-newest should now work in more situations on MS
 Windows, e.g., when R has been installed in a non-default "ProgramFiles"
 directory tree.  In these cases, there's no need to specify the name (and
 full path) of the R program anymore.
@item @ESS{[R]}: For XEmacs, startup (with new tooltip code) works again.
@end itemize

Changes/New Features in 5.3.5:
@itemize @bullet
@item @ESS{[R]} a new defun is available, @kbd{M-x R-newest}, which will start
the newest version of R that it can find on your system.
@item @ESS{[R]} add Sven Hartenstein's ``R function arguments tips''
 functionality, via new file @file{../lisp/essd-r-args.el}.
 Note that this includes an ``electric "("'' behavior inside @code{R-mode}
 which is @emph{active by default} and can be customized via
 @code{ess-r-args-electric-paren}; i.e., use @code{(setq
 ess-r-args-electric-paren nil)} to turn it off.  Further,
 @code{ess-r-args-show-as} allows to switch to the ``tooltip'' mode.
@item @ESS{}: functions @code{ess-get-pdf-viewer} and *-ps-viewer; built on new
 customizable variables @code{ess-pdf-viewer-pref} and
 @code{ess-ps-viewer-pref}; currently used in @code{ess-swv-PDF} and
 @code{*-PS}.
@item @ESS{[R]} Improved @code{ess-swv-PDF} to run pdf viewer only if
 pdflatex was ok
@item @ESS{[R]} Improved @code{ess-swv-weave} to start R automatically if
 none is running.
@item @ESS{}: Do no longer ask @emph{which} ESS process to use if there
 is only one.
@end itemize

Changes/New Features in 5.3.4:
@itemize @bullet
@item @ESS{[R]} now better work with options(error=recover); and the
new default of CHM help files on windows.
@item @ESS{[R]} some more cleanup in the ``sweave'' functions
@item miscellaneous fixes
@end itemize

Changes/New Features in 5.3.3:
@itemize @bullet
@item @ESS{[S]} fix buglet (5.3.2 only) which left command prompt in
``execute buffer'' and hence help files.
@item new customizable variable @code{ess-display-buffer-reuse-frames}
set to true (which changes default behavior) such that execution or
help *frames* are reused.
@end itemize

Changes/New Features in 5.3.2:
@itemize @bullet
@item Classic BUGS now supported by @code{(require 'essd-bugs)} with @ESS{[BUGS]}
      and JAGS by @code{(require 'essd-jags)} with @ESS{[JAGS]}.  But, only one
      of them can be used at a time since they don't play nice together.  Also,
      @kbd{C-c C-c} is now bound to the function @code{ess-bugs-next-action}
      (@kbd{F12} has been retired).  And finally, note that @file{essl-bug.el}
      is deprecated and the replacement is @file{essl-bugs.el}.
@item @ESS{[R]} Improved some of the ``Sweave-make''
 functions (yet scarcely documented) in @file{ess-swv.el}.
@item @ESS{[S]} No longer mess with .Last.value (nor in other ``languages'').
@end itemize

Changes/New Features in 5.3.1:
@itemize @bullet
@item See the docs for 2 ways to install @ESS{} for XEmacs
      @enumerate
      @item by uncommenting the XEmacs part of
            Section 1 of @file{Makeconf} and performing @code{make install}
      @item by unpacking either
            @file{ess-5.3.1.tgz} or @file{ess-5.3.1.zip} into
            @file{PREFIX/lib/xemacs/site-packages} on unix or
            @file{PREFIX\XEmacs\site-packages} on windows
      @end enumerate
@item @ESS{[R]}: fixed bugs so that Rterm.exe can be found by XEmacs
@item @ESS{[S]}: @kbd{ess-toggle-S-assign-key} is slightly changed; in
 particular, the default @code{ess-assign-key} is now @kbd{C-x =}.
@item @ESS{[R]}: @kbd{M-x R-site-search} is a new (slightly experimental)
 utility similar to R's @code{RSiteSearch(..)} but with the advantage of
 using Emacs' preferred browser, see @code{browse-url-browser-function}
@end itemize

Changes/New Features in 5.3.0:
@itemize @bullet
@item @ESS{[BUGS]}: sanely re-format statistical output, @file{.bog},
from scientific notation to numbers rounded with 4 decimal places
with @kbd{M-x ess-bugs-sci-round-to-4-dp}.
@item The keys for navigating among section headings in help buffers
worked, but only for one language per session; they should now work for
multiple languages.  (They were also broken on Windows machines.)
@item @ESS{[S]} long standing buglets in the internal logic for loading
lisp code on Windows.  Particularly fixed behavior in help mode with S-plus
GUI.
@item New variable, @code{ess-use-inferior-program-name-in-buffer-name},
which enables using the executable name instead of the dialect name for
R. Feature request.
@item @ESS{[S]} @kbd{ess-execute-screen-options}
now also works correctly when there is more than one window *side-by-side*
in the same frame and runs in the correct buffer also when there is more
than one S buffer.
@item @iESS{[S]} new functions @code{ess-eval-paragraph-and-step} and
 @code{ess-eval-function-or-paragraph-and-step} are bound to keys
 @kbd{C-c C-p} and @kbd{C-c C-c} respectively and to the menu in
 @ESS{}-mode; also bound in the help mode (for evaluating examples).
@item @ESS{[S]} new function @code{ess-toggle-S-assign-key} allows to
assign the `` <- '' insertion to an arbitrary key.
@end itemize

@end itemize