[ESS] ESS 12.09-1 released

Martin Maechler maechler at stat.math.ethz.ch
Fri Dec 21 17:04:55 CET 2012

We have relased  ESS 12.09-1    
... as a Christmas present to all ESS lovers :-)

Originally planned mainly as a bug fix release to 12.09,
few open bugs and new feature requests etc have kept us from
releasing early, and consequently,
ESS 12.09-1 not only fixes somewhat important bugs, but also
introduces quite a few new features,
not the least some "shuffling" of mostly very recent key
bindings,  see  '1.9 New Features'  below.

Fast direct download links are

Wishing you pleasant holidays, for the ESS core team,
Martin Maechler, ETH Zurich

Here is the start of the ANNOUNCE file which is part of the release

The ESS Developers proudly announce the release of ESS


   Emacs Speaks Statistics (ESS) provides an intelligent, consistent
interface between the user and the software.  ESS interfaces with
R/S-PLUS, SAS, BUGS/JAGS, Stata and other statistical analysis packages
under the UNIX, GNU Linux, Microsoft Windows, Mac OS X and other
operating systems.  ESS is a package for the GNU Emacs and XEmacs text
editors whose features ESS uses to streamline the creation and use of
statistical software.  ESS knows the syntax and grammar of statistical
analysis packages and provides consistent display and editing features
based on that knowledge.  ESS assists in interactive and batch
execution of statements written in these statistical analysis languages.

   ESS is freely available under the GNU General Public License (GPL).
Please read the file COPYING which comes with the distribution, for
more information about the license. For more detailed information,
please read the README files that come with ESS.

1.1 Getting the Latest Version

The latest released version of ESS is always available on the web at:
ESS web page (http://ess.r-project.org) or StatLib

1.1.1 ESS subversion repository

The latest development version of ESS is available via
`https://svn.R-project.org/ESS/', the ESS Subversion repository.  If
you have a Subversion client (see `http://subversion.tigris.org/'), you
can download the sources using:
     % svn checkout https://svn.r-project.org/ESS/trunk PATH
   which will put the ESS files into directory PATH.  Later, within
that directory, `svn update' will bring that directory up to date.
Windows-based tools such as TortoiseSVN are also available for
downloading the files.  Alternatively, you can browse the sources with a
web browser at: ESS SVN site (https://svn.r-project.org/ESS/trunk).
However, please use a subversion client instead to minimize the load
when retrieving.

   If you remove other versions of ESS from your emacs load-path, you
can then use the development version by adding the following to .emacs:

     (load "/path/to/ess-svn/lisp/ess-site.el")

   Note that https is required, and that the SSL certificate for the
Subversion server of the R project is

     Certificate information:
      - Hostname: svn.r-project.org
      - Valid: from Jul 16 08:10:01 2004 GMT until Jul 14 08:10:01 2014 GMT
      - Issuer: Department of Mathematics, ETH Zurich, Zurich, Switzerland, CH
      - Fingerprint: c9:5d:eb:f9:f2:56:d1:04:ba:44:61:f8:64:6b:d9:33:3f:93:6e:ad

(currently, there is no "trusted certificate").  You can accept this
certificate permanently and will not be asked about it anymore.

1.1.2 Git for development

For development and experimentation on new features, there is now a
GitHub branch for ESS, available at `https://github.com/emacs-ess/ESS'.

1.2 Current Features

   * Languages Supported:
        * S family (i.e., R and S+ (aka S-PLUS), nowadays)

        * SAS

        * OpenBUGS/JAGS

        * Stata

        * XLispStat including Arc and ViSta

        * Julia

   * Editing source code (S family, SAS, OpenBUGS/JAGS, Stata, Julia)
        * Syntactic indentation and highlighting of source code

        * Partial evaluation of code

        * Loading and error-checking of code

        * Source code revision maintenance

        * Batch execution (SAS, OpenBUGS/JAGS)

        * Use of imenu to provide links to appropriate functions

   * Interacting with the process (S family, SAS, Stata, Julia)
        * Command-line editing

        * Searchable Command history

        * Command-line completion of S family object names and file

        * Quick access to object lists and search lists

        * Transcript recording

        * Interface to the help system

   * Transcript manipulation (S family, Stata)
        * Recording and saving transcript files

        * Manipulating and editing saved transcripts

        * Re-evaluating commands from transcript files

   * Interaction with Help Pages and other Documenation (R)
        * Fast Navigation

        * Sending Examples to running ESS process.

        * Fast Transfer to Further Help Pages

   * Help File Editing (R)
        * Syntactic indentation and highlighting of source code.

        * Sending Examples to running ESS process.

        * Previewing

1.3 Requirements

ESS is most likely to work with current/recent versions of the following
statistical packages: R/S-PLUS, SAS, Stata, OpenBUGS and JAGS.

   ESS supports current, and recent, stable versions of GNU Emacs
(specifically, the 22.x and 23.x series; alpha/beta/pre-release versions
are NOT SUPPORTED).  Due to XEmacs lacking some features that ESS
requires, ESS support of XEmacs ends with ESS 12.04-4.  This decision
will be re-visited in the future as XEmacs continues to sync with GNU

   To build the PDF documentation, you will need a version of TeX Live
or texinfo that includes texi2dvi (BEWARE: recent TeX Live, and some
texinfo RPMs, do NOT include texi2dvi).

1.4 Stability

All recent released versions are meant to be release-quality versions.
While some new features are being introduced, we are cleaning up and
improving the interface.  We know that there are many remaining
opportunities for documentation improvements, but all contributors are
volunteers and time is precious. Patches or suggested fixes with bug
reports are much appreciated!

1.5 Mailing List

There is a mailing list for discussions and announcements relating to
ESS.  Join the list by sending an e-mail with "subscribe ess-help" (or
"help") in the body to <ess-help-request at stat.math.ethz.ch>;
contributions to the list may be mailed to
<ess-help at stat.math.ethz.ch>.  Rest assured, this is a fairly
low-volume mailing list.

   The purposes of the mailing list include

   *  helping users of ESS to get along with it.

   *  discussing aspects of using ESS on Emacs and XEmacs.

   *  suggestions for improvements.

   *  announcements of new releases of ESS.

   *  posting small patches to ESS.

1.6 Reporting Bugs

Please send bug reports, suggestions etc. to
<ESS-bugs at stat.math.ethz.ch>

   The easiest way to do this is within Emacs by typing

   `M-x ess-submit-bug-report'

   This also gives the maintainers valuable information about your
installation which may help us to identify or even fix the bug.

   If Emacs reports an error, backtraces can help us debug the problem.
Type "M-x set-variable RET debug-on-error RET t RET".  Then run the
command that causes the error and you should see a *Backtrace* buffer
containing debug information; send us that buffer.

   Note that comments, suggestions, words of praise and large cash
donations are also more than welcome.

1.7 Authors

   * A.J. Rossini (mailto:blindglobe at gmail.com)

   * Richard M. Heiberger (mailto:rmh at temple.edu)

   * Kurt Hornik (mailto:Kurt.Hornik at R-project.org)

   * Martin Maechler (mailto:maechler at stat.math.ethz.ch)

   * Rodney A. Sparapani (mailto:rsparapa at mcw.edu)

   * Stephen Eglen (mailto:stephen at gnu.org)

   * Sebastian P. Luque (mailto:spluque at gmail.com)

   * Henning Redestig (mailto:henning.red at googlemail.com)

   * Vitalie Spinu (mailto:spinuvit at gmail.com)

1.8 License

The source and documentation of ESS is free software.  You can
redistribute it and/or modify it under the terms of the GNU General
Public License as published by the Free Software Foundation; either
version 2, or (at your option) any later version.

   ESS is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
in the file COPYING in the same directory as this file for more details.

1.9 New Features

     Changes/New Features in 12.09-1:
        * ESS _Breaking Changes in Keys_:

             - New keymaps: `ess-doc-map' bound to `C-c C-d';
               `ess-extra-map' bound to `C-c C-e';
               `ess-dump-object-into-edit-buffer' was moved on `C-c C-e

             - roxygen map was moved on `C-c C-o' and
               `ess-roxy-update-entry' now resides on `C-c C-o C-o'

             - ess-handy-commands is not bound anymore

             - `ess-dev-map' (including `ess-tracebug' and
               `ess-developer') moved on `C-c C-t'

             - `C-c C-y' is deprecated in favor of `C-c C-z C-z'

        * ESS[R] new command `ess-describe-object-at-point' bound to
          `C-c C-d C-e' (repeat `C-e' or `e' to cycle). It was inspired
          by Erik Iverson's `ess-R-object-tooltip'. Customize
          `ess-describe-at-point-method' to use tooltip instead of an
          electric buffer.

        * ESS: New command `ess-build-tags-for-directory' bound to `C-c
          C-e C-t' for building dialect specific tag tables. After
          building tags use `M-.' to navigate to function and objects
          definitions. By default `C-c C-e C-t' builds tags based on
          imenu regular expressions and also include other common
          languages `.c, .o, .cpp' etc. But it relies on external `find'
          and `etags' commands. If `ess-build-tags-command' is defined
          (for `R'), the inferior process is asked to build tags

        * ESS: `ess-switch-process' offers `*new*' alternative to start
          a new process instead of switching to one of the currently
          running processes.

        * ESS: Switching between processes (`C-c C-s') uses buffer
          names instead of the internal process names. Use `M-x
          rename-buffer' command to conveniently rename your process

        * ESS: Process buffers can be automatically named on process
          creation according to user specified scheme. Default schemes
          are *proc*, *proc:dir* and *proc:abbr-long-dir* where `proc'
          stands for the internal process name and `dir' stands for the
          directory where the process was started in. The default is
          *proc*. For customization see

        * ESS: `ess-eval-visibly-p' is deprecated in favor of

        * ESS: New evaluation pattern `nowait'.  In addition to old
          `nil' and `t' values, `ess-eval-visibly' accepts `nowait' for
          a visible evaluation with no waiting for the process. See
          `ess-eval-visibly' for details on evaluation patterns.

        * ESS: New "Process" menu entry with process related commands
          and configuration

        * iESS: Process buffer is now automatically shown on errors

        * ESS: New `ess-switch-to-inferior-or-script-buffer' command
          bound to `C-c C-z' in both script and process buffers. If
          invoked form process buffer it switches to the most recent
          buffer of the same dialect. It is a single key command.

        * ESSR-help:  On multiple help pages with the same name, `C-c
          C-v' now asks for user resolution directly in emacs.

        * ESS[R] ess-roxy: new variable `ess-roxy-re' for fontification
          of cases where the number of leading `#' differs from

        * ESS[R] Eldoc was considerably enhanced.  It now finds hidden
          default S3 methods and displays non-default methods'
          arguments after trailing ||.

        * ESS[R]: New `ess-display-demos' command bound to `C-c C-d o'
          and `C-c C-d C-o'

        * ESS: New `ess-help-web-search' command bound to `C-c C-d w'
          and `C-c C-d C-w' to facilitate interactive search of web
          resources. Implemented for `R', `Stata' and `Julia'. See also

        * ESS: ess-pdf-viewer-pref accepts now command line arguments

        * ESS[Rnw]: Add knitr support.  Customize `ess-swv-processor'
          for the default processor.

        * ESS[Rnw]: More thorough renaming of remaining `noweb-*' to

        * ESS[Rnw] new commands `ess-eval-chunk-and-step' and
          `ess-eval-chunk' bound to `M-n C-c' and `M-n C-M-x' to mirror
          standard ess commands in C-c map.

        * ESS[R] Auto-completion: new variable
          `ess-ac-R-argument-suffix' to customize the insertion of
          trailing "=". Defaults to " = ".

        * ESS[Julia]: Added index, apropos and web-search to julia.

        * ESS help: More evaluation commands were added to ess-help
          mode (`C-c C-c', `C-M-x' etc)

     Bug Fixes in 12.09-1:
        * iESShelp: Multiple help pages with the same name are properly
          handled on `C-c C-v'

        * iESSremote: Evaluation with ESS remote no longer freezes

        * iESS: `comint-previous-prompt' `C-c C-p' no longer stops on
          secondary prompt "+".

        * iESS[R], iESS(Sqpe) [S] on Windows: The `options("editor")'
          is now initialized to `emacsclient' instead of the previous
          `gnuclient'.  The user may need to add the line
          `(server-start)' to the emacs initialization file.
          `emacsclient' has been included with emacs since GNU Emacs

        * ESS[Rnw] Fixed "connection to R" bug (in 12.09 only).

        * ESS[Rnw] Explicit `ess-swv-stangle' and `ess-swv-sweave'

        * ESS[Rnw] Fixed completion and smart underscore problems cause
          by unmatched "\"'

        * ESS[R] is more careful with the `R' code injection.  It now
          happens only once at the start of the session.

        * ESS[R]: Fixed auto-scrolling the comint buffer on evaluation.

        * ESS[Julia]: Solve several indentation and word navigation

        * ESS[Julia]: Help system works again.

     Changes/New Features in 12.09:

        * Due to XEmacs lacking some features that ESS requires, ESS
          support of XEmacs ends with ESS 12.04-4.  This decision will
          be re-visited in the future as XEmacs continues to sync with
          GNU Emacs.

        * ESS[R]: On Windows, there is now a new customizable variable
          (currently called `ess-directory-containing-R') to tell ESS
          where to look for the `Rterm.exe' executables.  The name of
          the variable and the values it can take are both in beta and
          subject to change.  Prior to this variable, ESS searched only
          in the default installation directory.  Setting this variable
          now tells ESS how to find `Rterm.exe' executables when they
          are installed somewhere else.

        * ESS[julia]: _new_ mode for editing julia code (`*.jl'). Start
          with `M-x julia'.

          Full interaction interface, imenu and basic error referencing
          are available.

        * ESS[R] noweb: `noweb-mode' and `noweb-font-lock-mode' have
          been renamed to `ess-noweb-mode' and
          `ess-noweb-font-lock-mode' to avoid conflicts with the "real"

        * ESS[R] noweb: The long standing font-lock bug has been solved
          in `ess-noweb' interface.

        * ESS: Basic evaluation keys are now bound to
          `ess-eval-region-*-' functions:

             - `C-M-x' is bound to

             - `C-c C-c' is bound to

             - `C-RET' is bound to `ess-eval-region-or-line-and-step'

          Each of these functions first evaluates the region whenever
          the region is active.

        * ESS: `C-M-a'/`C-M-e' now step to beginning/end of paragraph
          if no function has been detected.

        * ESS: `ess-eval-*-and-step' family of functions are now
          smarter, and don't step to end of buffer or end of chunk code
          (`@') when at the end of the code.

        * ESS: `ess-handy-commands' function is bound to `C-c h'

        * ESS: ESS is now _blinking_  the evaluated region.  Set
          `ess-blink-region' to nil to deactivate; `ess-blink-delay'
          gives the duration of the blink. Evaluated region is
          "blinked" in `highlight' face.

        * ESS[R-help]  New key `a' for "apropos()" in help buffers.
          Also available through `C-c h'.

        * ESS[R-help]  All R commands of type foo?bar and foo??bar are
          recognized and redirected into appropriate *ESS-help* buffers.

        * ESS[R]: New customization interface for _font-lock_.

          ESS font-lock operates with predefined keywords. Default
          keywords are listed in `ess-R-font-lock-keywords' and
          `inferior-R-font-lock-keywords', which see. The user can
          easily customize those by adding new keywords. These
          variables can also be interactively accessed and saved
          through `ESS/Font-lock' submenu.

          Several new fontification keywords have been added. Most
          notably the keywords for highlighting of function calls,
          numbers and operators.

        * ESS[R]: auto-complete is now activated by default whenever
          auto-complete package is detected. Set
          `ess-use-auto-complete' to nil to deactivate.

        * ESS[R]: R AC sources are no longer auto-starting at 0
          characters but at the default `ac-auto-start' characters.

        * ESS no longer redefines default ac-sources, but only appends
          `ac-source-filename' to it.

        * ESS: `ac-source-R' now concatenates " = " to function

        * ESS: Menus for ESS and iESS have been reorganized and
          enriched with _Tracebug_ and _Developer_ submenus.

        * ESS[R]: `ess-developer' and `ess-tracebug' commands are
          available by default in `ess-dev-map' which is bound to `C-c
          d' in ESS and iESS maps.

        * ESS[R]: `eldoc' truncates long lines whenever
          `eldoc-echo-area-use-multiline-p' is non-nil (the default).
          Set this variable to t if you insist on multiline eldoc.  See
          also `ess-eldoc-abbreviation-style'.

        * ESS[R]: completion code pre-caches arguments of heavy
          generics such as `plot' and `print' to eliminated the
          undesirable delay on first request.

        * iESS: Prompts in inferior buffers are now highlighted
          uniformly with `comint-highlight-prompt' face.

        * ESS[R]: R process no longer wait for the completion of input
          in inferior buffer.  Thus, long running commands like
          `Sys.sleep(5)' no longer stall emacs.

        * ESS: [R, S, Stata, Julia] have specialized
          `ess-X-post-run-hook's, which are run at the end of
          subprocess initialization.

        * ESS[Stata]: All interactive evaluation commands work as
          expected.  On-line comments are removed before the evaluation
          and multiline comments are skipped on `C-c C-c' and other
          interactive commands.

        * ESS no longer auto-connects to a subprocess with a different
          dialect than the current buffer's one.

        * ESS: `ess-arg-function-offset-new-line' is now a list for all
          the ESS indentation styles, which results in the following
          indentation after an open "(":

            a <- some.function(other.function(

        * ESS[SAS]: Improved MS RTF support for GNU Emacs; try
          `ess-sas-rtf-portrait' and `ess-sas-rtf-landscape'.

     Changes/Bug Fixes in 12.04-3:
        * ESS: basic support for package.el compatibility

        * ESS[R]: correct indentation of & and | continuation lines

        * `M-x ess-version' shows the svn revision even after `make

        * ESS[SAS]: improved XEmacs support

        * iESS[R]: better finding of previous prompt

        * ESS[Stata]: adjusted prompt for mata mode

        * ESS[R]: resolved name clashes with cl.el

        * ESS[R]: removed dependence on obsolete package assoc

        * New `make' target  `lisp', to build the lisp-only part, i.e.,
          not building the docs.

     Changes/New Features in 12.04-1:
        * iESS[Stata]: New interactive help invocation.

        * iESS[Stata]: New custom variable `inferior-STA-start-file'.

        * iESS[Stata]: `inferior-STA-program-name' is now "stata" and
          can be  customized.

        * ESS[Stata] New sections in stata help files Syntax(`s-S'),
          Remarks(`r'), Title(`t').

     Bug Fixes in 12.04-1:
        * ESS[R]: Better `ess-tracebug' error handling.

        * ESS[R]: Corrected `ess-eldoc' help string filtering and
          improved argument caching.

        * ESS[R]: Indentation of non-block if/else/for/while lines

        * `M-x ess-version' should work better.

        * ESS: Filename completion now again works inside strings.

        * iESS[Stata]: Fixed prompt detection issue.

        * ESS[Rd]: R is autostarted also from here, when needed.

     Changes/New Features in 12.04:
        * ESS: Reverting new behavior of 12.03, `TAB' in `ess-mode' no
          longer completes by default.  If you want smart `TAB'
          completion in R and S scripts, similarly to iESS behavior,
          set the variable `ess-tab-complete-in-script' to `t'. Also see
          `ess-first-tab-never-complete' for how to customize where
          first `TAB' is allowed to complete.

        * ESS: completion is consistently bound to `M-TAB' (aka `M-C-i')
          in both Emacs23 and Emacs24.

        * ESS: The variable `ess-arg-function-offset-new-line'
          introduced in ESS(12.03) now accepts a list with the first
          element a number to indicate that the offset should be
          computed from the indent of the previous line. For example
          setting it to '(2) results in:

            a <- some.function(

     Changes/New Features in 12.03:
        * ESS indentation: new offset variable
          `ess-arg-function-offset-new-line' controlling for the
          indentation of lines immediately following open '('. This is
          useful to shift backwards function arguments after a long
          function call expression:

            a <- some.function(

          instead of the old

            a <- some.function(

          If '(' is not followed by new line the behavior is unchanged:

            a <- some.function(arg1,

          This variable should be set as part of indentation style
          lists, or in ess-mode hook.

        * ESS[R]: `C-c .' sets (indentation) style.

        * ESS: In ESS buffers `yank'(`C-y') command accepts  double
          argument `C-u C-u' to paste commands only. It deletes any
          lines not beginning with a prompt, and then removes the
          prompt from those lines that remain. Useful to paste code
          from emails, documentation, inferior ESS buffers or
          transcript files.

        * Documentation: ESS user manual has been rearranged and
          completed with several new chapters and sections to reflect
          newly added features ("Completion", "Developing with ESS",
          "ESS tracebug", "ESS developer", "ESS ElDoc", "IDO
          Completion" and "Evaluating Code")

        * RefCard: Reference card was updated to include new features.

        * Eldoc: Eldoc was rewritten and is activated by default.  See
          `ess-use-eldoc', `ess-eldoc-show-on-symbol',
          `ess-eldoc-abbreviation-style' variables for how to change
          the default behavior. _Note:_ `skeleton-pair-insert-maybe'
          prohibits eldoc display, on `(' insertion.

        * ESS[R]: Eldoc shows arguments of a generic function whenever

        * ESS: `TAB' in `ess-mode' now indents and completes, if there
          is nothing to indent. Set `ess-first-tab-never-completes-p'
          to `t' to make `TAB' never complete on first invocation.
          Completion mechanism is similar to the completion in the
          `inferior-ess-mode' - a filename expansion is tried, if not
          found ESS completes the symbol by querying the process.

        * ESS for emacs version 24 or higher: ESS is  fully compatible
          with the emacs 24 completion scheme, i.e. all the completion
          is done by `completion-at-point'. Also in accordance with
          emacs conventions, ESS doesn't bind `M-TAB' for emacs 24 or
          higher. `M-TAB' calls the default `complete-symbol'.

        * ESS[R]: Out of the box integration with `Auto Completion'
          mode (http://cx4a.org/software/auto-complete/). Three AC
          sources `ac-source-R-args', `ac-source-R-objects' and
          `ac-source-R' are provided. The last one combines the
          previous two and makes them play nicely together. Set
          `ess-use-auto-complete' to `t' to start using it.  Refer to
          documentation string of `ac-use-auto-complete' for further

        * ESS[R]: New unified and fast argument completion system,
          comprised of `ess-funname.start', `ess-function-arguments',
          `ess-get-object-at-point'. Eldoc and auto-completion
          integration are using this system.

        * ESS: `ess-switch-to-end-of-ESS'(`C-c C-z'), and
          `ess-switch-to-ESS'(`C-c C-y'): Automatically start the
          process whenever needed.

        * ESS[R]: `roxy' knows about previewing text version of the
          documentation. Bound to `C-c C-e t'.

        * ESS[R]: Solved the "nil filename" bug in roxygen support.

        * ESS[R]: `ess-tracebug' is now part of ESS:

          New Features:

             - Source injection: Tracebug now can inject source
               references on the fly during code evaluation, i.e. you
               don't have to source your file, but just evaluate your
               code in normal fashion. Variable
               `ess-tracebug-inject-source-p' controls this behavior -
               if t, always inject source reference, if `'function',
               inject only for functions (this is the default), if
               `nil', never inject.

               During the source injection the value of
               `ess-eval-visibly' is ignored.

             - Org-mode support: Visual debugger is now aware of the
               temporary org source editing buffer (`C-c '') and jumps
               through this buffers if still alive, or in original org
               buffer otherwise.

             - New keys in watch mode: `?' and `d'

             - Two new hooks: ess-tracebug-enter-hook and

        * ESS[R]: New package `ess-developer' to evaluate `R' code
          directly in the package environment and namespace. It can be
          toggled on and off with `C-c d t'. When `ess-developer' is on
          all ESS evaluation commands are redefined to evaluate code in
          appropriate environments. Add package names to the list of
          your development packages with `C-d a', and remove with `C-d
          r'. Source the current file with `C-d s'.Evaluation function
          which depend on ``ess-eval-region'' ask for the package to
          source the code into, `ess-eval-function' and alternatives
          search for the function name in the development packages'
          environment and namespace and insert the definition
          accordingly. See the documentation section "Developing with
          ESS/ESS developer" for more details.

        * ESS[R] help system:

          New Features:

             - `q' quits window instead of calling
               `ess-switch-to-end-of-ESS'.  This is consistent with
               emacs behavior help and other special buffers (_breaking

             - `k' kills window without asking for the name (pointed by
               Sam Steingold)

             - Help map inherits from `special-mode-map' as sugested by
               Sam Steingold.

             - Package index: new function `ess-display-index' bound to
               `i' in help mode map.

             - Package vignettes: new function `ess-display-vignettes'
               bound to `v' in help mode map.

             - Display help in HTML browser: new function
               `ess-display-help-in-browser' bound to `w' in help mode
               map. It depends on `R''s `browser' option.

             - New custom variable `ess-help-pop-to-buffer': if non-nil
               ESS help buffers are given focus on display. The default
               is `t' (_breaking change_).

             - New menu entries for the above functions.

             - Bogus help buffers are no longer generated by default,
               i.e.  buffers of the form "No documentation for 'foo' in
               specified packages and libraries: you could try '??foo'
               ".  `ess-help-kill-bogus-buffers' now defaults to `t'.
               Beware, there may be instances where the default is
               unsatisfactory such as debugging and/or during R
               development.  Thanks to Ross Boylan for making the
               suggestion, Sam Steingold for reminding us of this
               variable and Martin Maechler for the warning.

        * ESS now uses `IDO' completing read functionality for all the
          interactive requests. It uses ido completion mechanism
          whenever available, and falls back on classical
          completing-read otherwise. You can set `ess-use-ido' to nil
          if you don't want the IDO completion. See the documentation
          string of `ess-use-ido' for more information about `IDO' and
          ESS configuration.

        * ESS[S]: "`,'" is bound to ess-smart-comma: If comma is
          invoked at the process marker of an ESS inferior buffer,
          request and execute a command from ``ess-handy-commands''
          list. If `ess-R-smart-operators' is t ``ess-smart-comma' also
          inserts " " after comma.

        * ESS[S], notably `R': Variable ``ess-handy-commands'' stores
          an alist of useful commands which are called by
          `ess-smart-comma' in the inferior buffer.

          Currently containing:












          Handy commands: `ess-library', `ess-install.packages', etc -
          ask for item with completion and execute the correspond
          command. `ess-sos' is a interface to `findFn' function in
          package `sos'. If package `sos' is not found, ask user for
          interactive install.

        * ESS: New dynamic mode line indicator: Process status is
          automatically reflected in all mode-lines of associated with
          the process buffers. Particularly useful for displaying debug
          status of `ess-tracebug' and developer status of
          `ess-developer' in all associated buffers.

        * ESS: New `ess-completing-read' mechanism: ESS uses `ido'
          completions whenever possible. Variable `ess-use-ido'
          controls whether to use ido completion or not. Active by

        * ESS now supports comint fields for output and input
          detection. This feature is not used by default, but might be
          useful in the future.

        * ESS[S]: New custom variable `inferior-ess-S-prompt' to
          customize prompt detection regular expression in the inferior
          ESS buffers. You can customize this variable to enhance
          comint navigation (`comint-previous-prompt' and
          `comint-next-prompt') the inferior buffers.

        * ESS[R]: Internal `R' completion retrieval
          (`ess-R-complete-object-name')  was rewritten and is faster

        * ESS is using process plist to store process specific
          variables, as opposed to buffer local variables as it was
          using before. The use of buffer local variables to store
          process variables is discouraged.

        * ESS: new functions to manipulate process plists:
          `ess-process-get' and `ess-process-set'.

        * ESS: Internal process waiting mechanism was completely
          rewritten. ESS no more relies on prompt regular expressions
          for the prompt detection. The only requirement on the primary
          process prompt is to end in `> '. This could be overwritten
          by setting `inferor-ess-primary-prompt'.

        * ESS[S], notably `R': Saved command history:  ESS-HISTORY-FILE
          now accepts `t' (default), `nil', or a  file name. By setting
          it to `nil' no command line history is saved  anymore.
          ESS-HISTORY-DIRECTORY now allows to have the history  all
          saved in one "central" file.

        * ESS[R]: more Roxygen improvements.

        * ESS[R]: `C-c .' to set (indentation) style.

        * ESS[R]: Functions with non-standard names (for example
          'aaa-bbb:cc') are properly handled by font-lock and
          evaluation routines.

        * ESS[R]:Several regexp bugs (described in etc/R-ESS-bugs.el)
          were fixed in `ess-get-words-from-vector' and `ess-command'.

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