Dear ESS users

I've have just release ESS 16.10 (= 2016 - October) keeping to
our bi-annual release cycle.

In some sense, this is much a bug fix release, but there new
features, notably for in the "developer" part,  ESS typically
automatically uses the correct package namespace  (not for the
base packages yet).

For the complete list of (documented) new features and bug
fixes, read the following (from ANNOUNCE) to the end.

In the name of the ESS core team,
with thanks to all helpers, notably by github pull requests,

Martin Maechler, ETH Zurich


The ESS Developers proudly announce the release of ESS 16.10

   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 ( or StatLib

1.1.1 Git for ESS development

For development and experimentation on new ESS features, there is now a
GitHub branch for ESS, available at <>.

1.2 Current Features

   * Languages Supported:
        * S family (R and S+ AKA S-PLUS)
        * SAS
        * OpenBUGS/JAGS
        * Stata
        * 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 Documentation (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
(currently, the 24.x and 25.x series; alpha/beta/pre-release versions
are NOT SUPPORTED). Non-Windows users beware: GNU Emacs 24.3 is
preferable to 24.1 or 24.2: these broken builds suffer from bug 12463
<> which will cause
Emacs to get progressively slower over time.

   Due to XEmacs lacking some features that ESS requires, ESS support of
XEmacs ended with ESS 12.04-4.

   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 <>; contributions
to the list may be mailed to <>.  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 <>

   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 (
   * Richard M. Heiberger (
   * Kurt Hornik (
   * Martin Maechler (
   * Rodney A. Sparapani (
   * Stephen Eglen (
   * Sebastian P. Luque (
   * Henning Redestig (
   * Vitalie Spinu (
   * Lionel Henry (

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
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License in
the file COPYING in the same directory as this file for more details.

1.9 New Features

Changes and New Features in 16.10:

   * ESS[R]: Syntax highlighting is now more consistent.  Backquoted
     names are not fontified as strings (since they really are
     identifiers).  Furthermore they are now correctly recognised when
     they are function definitions or function calls.
   * ESS[R]: Backquoted names and '%op%' operators are recognised as
     sexp.  This is useful for code navigation, e.g.  with 'C-M-f' and
   * ESS[R]: Integration of outline mode with roxygen examples fields.
     You can use outline mode's code folding commands to fold the
     examples field.  This is especially nice to use with well
     documented packages with long examples set.  Set
     'ess-roxy-fold-examples' to non-nil to automatically fold the
     examples field when you open a buffer.
   * ESS[R]: New experimental feature: syntax highlighting in roxygen
     examples fields.  This is turned off by default.  Set
     'ess-roxy-fontify-examples' to non-nil to try it out.
   * ESS[R]: New package development command 'ess-r-devtools-ask' bound
     to 'C-c C-w C-a'.  It asks with completion for any devtools command
     that takes 'pkg' as argument.
   * ESS[R]: New command 'C-c C-e C-r' to reload the inferior process.
     Currently only implemented for R. The R method runs
     'inferior-ess-r-reload-hook' on reloading.
   * ESS[R]: 'ess-r-package-mode' is now activated in non-file buffers
     as well.

   Bug fixes in 16.10:
   * ESS[R]: Fix broken (un)flagging for debugging inside packages
   * ESS[R]: Fixes (and improvements) in Package development
   * ESS[R]: Completion no longer produces '...=' inside 'list( )'.
   * ESS[R]: Better debugging and tracing in packages.
   * ESS[R]: Better detection of symbols at point.
   * ESS[R]: No more spurious warnings on deletion of temporary files.
   * ESS[julia]: help and completion work (better)
   * ESS[julia]: available via 'ess-remote'

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