[ESS] ESS 5.2.9 released
Martin Maechler
maechler at stat.math.ethz.ch
Tue Aug 30 18:21:06 CEST 2005
Dear ESS users,
We have released ESS 5.2.9 a few minutes ago.
With special thanks to Prof John Fox has beta tested it.
I have already enumerated the official Changes/New Features
which affect R-, S-plus-, Stata- and SAS- using modes.
You can find the list below ("New Features") or e.g.,
in the 'ANNOUNCE' file if you download the new version.
Downloads from the ESS site http://ESS.R-project.org/ or
directly http://ess.r-project.org/downloads/ess/ as *.zip and
*.tar.gz files. Hopefully, Debian, Redhat, SuSE, .. packages
will also be made available in due time.
For the ESS core team,
Martin Maechler, ETH Zurich.
------------------------------------ANNOUNCE-----------------------
1 ANNOUNCING ESS
****************
The ESS Developers proudly announce the release of ESS
5.2.9
Emacs Speaks Statistics (ESS) provides an intelligent, consistent
interface between the user and the software. ESS interfaces with
S-PLUS, R, SAS, BUGS and other statistical analysis packages under the
Unix, Microsoft Windows, and Apple Mac OS 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
(http://lib.stat.cmu.edu/general/ESS/)
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.
1.2 Current Features
====================
* Languages Supported:
* S family (S 3/4, S-PLUS 3.x/4.x/5.x/6.x/7.x, and R)
* SAS
* BUGS
* Stata
* XLispStat including Arc and ViSta
* Editing source code (S family, SAS, BUGS, XLispStat)
* Syntactic indentation and highlighting of source code
* Partial evaluation of code
* Loading and error-checking of code
* Source code revision maintenance
* Batch execution (SAS, BUGS)
* Use of imenu to provide links to appropriate functions
* Interacting with the process (S family, SAS, XLispStat)
* Command-line editing
* Searchable Command history
* Command-line completion of S family object names and file
names
* Quick access to object lists and search lists
* Transcript recording
* Interface to the help system
* Transcript manipulation (S family, XLispStat)
* Recording and saving transcript files
* Manipulating and editing saved transcripts
* Re-evaluating commands from transcript files
* Help File Editing (R)
* Syntactic indentation and highlighting of source code.
* Sending Examples to running ESS process.
* Previewing
1.3 Requirements
================
ESS has been tested with
* R >=0.49
* S-PLUS 3.3-4, 4.5, 5.0-1, 6.0-2, 7.0, 2000
* S4
* SAS >=6.12
* BUGS 0.5, 0.603
* Stata >=6.0
* XLispStat >=3.50
on the following platforms
* Linux (all)
* Solaris/SunOS (all)
* Microsoft Windows 95/98/NT/2000/XP (R, SPLUS 4.5/6.0-2/7.0/2000,
SAS and BUGS)
* Apple Mac OS (SAS for OS 9 and R for OS X)
with the following versions of emacs
* GNU Emacs 20.3-7, 21.1, 21.3-4, 22.0.50-pretesting
* XEmacs 21.0, 21.1.13-14, 21.4.0-8, 21.4.9-13(1), 21.4.14-15,
21.4.17, 21.5.18
---------- Footnotes ----------
(1) require the files.el patch to revert-buffer for the Local
Variables updating problem
1.4 Stability
=============
Versions 5.2.x are meant to be release-quality versions. While some
new features are being introduced, we are cleaning up and improving the
interface. We know about some remaining documentation inconsistencies.
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)
1.8 License
===========
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/New Features in 5.2.9:
* ESS[R] for Windows: the \ directory character bug with respect to
ess-load-file has been eradicated.
* iESS[SAS]: `C-c C-r' and `C-c C-b' once again work as intended and
documented.
* ESS[S]: M-x ess-fix-EQ-assign is a bit more agressive.
* ESS[S]: Imenu now also shows setAs(), etc.
* ESS[R]: R function pattern enhanced with underlying code such that
`M-C-a' (`ess-beginning-of-function') etc now work for many more
cases, including S4 method definitions.
* iESS[R]: myOwnhelp(1) no longer wrongly triggers help(1).
* ESS[R]: Improved detection of bogus help buffers: valid help
buffers containing with the string "no documentation"(e.g. contour)
were being treated as bogus.
* ESS[R]: In R help buffers, if `options("help.try.all.packages" =
TRUE)' then `?rlm' will list which packages rlm is defined in.
This help buffer is not bogus, but instead is now relabelled
"*help[R](rlm in packages)*".
* ESS[STA]: add "//" as comment starting character to syntax-table.
Changes/New Features in 5.2.8:
* iESS: [Tab] completes *file* names "inside string" as in earlier
(<= 5.2.3) ESS versions.
Changes/New Features in 5.2.7:
* If you use Custom to change the variable ess-toolbar-items, the
new toolbar is used in all subsequent ESS buffers.
* ESS[SAS]: new feature: if ess-sas-log-max >0 and your .log grows
to more than ess-sas-log-max bytes, just the first ess-sas-log-max
bytes are refreshed; this is helpful when your .sas program
generates lots of error messages and gets too big for emacs to
display
* ESS[R/S]: `M-;' in R/S editing modes will now indent with either
one or two hashes depending on context.
* ESS[R]: David Whiting's Sweave extensions (to 'noweb') are now
available (from ess-swv.el loaded by default).
Changes/New Features in 5.2.6:
* Removed non-ASCII characters in a few files.
* ESS[R]: now works better when UTF-8 locale is active; in
particular, you get correct directional quotes in R's startup
message for R-devel (unstable development version of R 2.1.0)
when using environment variables LANGUAGE=en at quot
LC_ALL=en_US.UTF-8
* ESS[SAS]: toggling of .log mode improved (`F10'); toggling of .lst
mode now also available (`C-F10'); killing all buffers associated
with .sas program no longer bound to `C-F10' since its a bit
overzealous.
* S-Plus 7 for Windows is now recognized.
* ESS[S] (incl. R): in auto-fill mode, strings are not wrapped
anymore.
* ESS[S] (incl. R): font-lock now correctly differs between R and S,
e.g., for "_"; both now fontify warning(.) and S does terminate()
additionally.
* Support for `bell' aka `beep' aka `ding' aka `alarm' in all
inferior modes: When \a is output "to the the console" at the
beginning of a line, the bell is rung.
Changes/New Features in 5.2.5:
* ESS[R]: `C-c C-q' or `Quit S' from the menu now should work (again
and less klunkily) and do not append `-exited' to the buffer name.
Further, the behavior of `(ess-cleanup)', called from ess-quit,
now depends on the new customizable variable
`ess-S-quit-kill-buffers-p' which defaults to `nil'.
Consequently, the question _"Delete all buffers associated with
..?"_ will not be asked anymore by default.
* ESS[SAS] - ess-ebcdic-to-ascii-search-and-replace will now work
with the `recode' application as well which is available on many
platforms
* ESS[S] (incl. R): Name completion for slots of S4 objects now
works!
Changes/New Features in 5.2.4:
* The documentation now includes an overview of how to use the emacs
TAGS facility for S functions. (The distribution also used to
contain a directory `etc/other/Tags' where a ~1990 version of
`etags.c' was distributed; this is no longer relevant and so has
been deleted.)
* ESS[SAS] - When you are working with EBCDIC files on an ASCII
platform, .log NOTEs may display as gibberish since the EBCDIC
characters are not converted to ASCII prior to their display. So,
the function ess-ebcdic-to-ascii-search-and-replace is provided for
convenience and is bound to `C-F11'. This function requires the
`dd' command (only available on unix or unix-like platforms).
* ESS: Completion of object names is now always done dynamically
rather than allowing the option of using a pre-computed database
(by `ess-create-object-name-db') since modern computers seem fast
enough for dynamic completion. (We expect few users, if any, have
been using the pre-computed database method.)
* ESS: object completion in iESS buffers running on Windows was very
slow (for GNU Emacs, but not XEmacs) and has now been fixed.
Further, it was more or less broken for all versions of S-plus 6.x,
and has been fixed to work everywhere but with the Windows' GUI of
S-plus. The list of objects now shows unique names also when an
object appears more than once in the search path.
* ESS[R]: Completion of object names now also includes those
starting with ".".
Changes/New Features in 5.2.3:
* ESS: When new inferior ESS processes are created, by default they
will replace the current buffer (this restores behavior from pre
5.2.0). If you wish new ESS processes to start in another window
of the current frame, set inferior-ess-same-window to nil.
* New variables inferior-Splus-args and inferior-R-args provide a
way to pass command line arguments to starting S and R processes.
Changes/New Features in 5.2.2:
* bug-fixes for 5.2.1 (require 'executable), html docs, etc.
* ess-lisp-directory/../doc/info added to Info-directory-list if
ess-info not found by info
* ESS[R]: If you have other versions of R on your exec-path, such as
"R-1.8.1" with Unix or "rw1081" with Windows, ESS will find them
and create appropriate functions, such as `M-x R-1.8.1' or `M-x
rw1081', for calling them. By default only Unix programs
beginning "R-1" and "R-2" and Windows programs parallel to the
version of R in your exec-path will be found, but see
ess-r-versions and ess-rterm-versions for ways to find other
versions of R.
* ESS[R]: Other versions of R, such as "R-1.8.1" on Unix and
"rw1081" on Windows, are added to the "ESS / Start Process /
Other" menu.
* ESS[S]: If you have other versions of S-Plus on your Windows
computer, such as S-Plus 6.1 or S-Plus 4.5, ESS will find them and
create appropriate functions, such as `M-x splus61', for calling
the console version (Sqpe) inside an emacs buffer. By default only
programs installed in the default location will be found, but see
ess-SHOME-versions for ways to find other versions of S-Plus.
* ESS[S]: Other versions of Sqpe on Windows, such as "splus61", are
added to the "ESS / Start Process / Other" menu.
* ESS[R]: (bug fix) ess-quit (bound to `C-c C-q') should now quit the
inferior R process, when issued from either the inferior buffer,
or from a .R buffer.
Changes/New Features in 5.2.1:
* ESS[S] (R and S-plus): now have toolbar support with icons to
evaluate code in the inferior process or to switch there. This
code is experimental and likely to change as XEmacs/Emacs issues
get resolved. The toolbar should be enabled if your Emacs displays
images, but can be disabled with the variable ess-use-toolbar.
Thanks to David Smith from Insightful for the S-plus logo.
* ESS[SAS]: ess-sas-graph-view (`F12') enhanced; you can specify
external file viewers for each graphics file type via the alist
ess-sas-graph-view-viewer-alist; also .jpg/.gif are now handled by
image-mode on XEmacs, if available, otherwise by graphics
primitives as before
Changes/New Features in 5.2.0:
* ESS[BUGS]: new info documentation! now supports interactive
processing thanks to Aki Vehtari (mailto:Aki.Vehtari at hut.fi); new
architecture-independent unix support as well as support for BUGS
v. 0.5
* ESS[SAS]: convert .log to .sas with ess-sas-transcript; info
documentation improved; Local Variable bug fixes; SAS/IML
statements/functions now highlighted; files edited remotely by
ange-ftp/EFS/tramp are recognized and pressing SUBMIT opens a
buffer on the remote host via the local variable
ess-sas-shell-buffer-remote-init which defaults to "ssh"; changed
the definition of the variable ess-sas-edit-keys-toggle to boolean
rather than 0/1; added the function ess-electric-run-semicolon
which automatically reverse indents lines containing only "run;";
`C-F1' creates MS RTF portrait from the current buffer; `C-F2'
creates MS RTF landscape from the current buffer; `C-F9' opens a
SAS DATASET with PROC INSIGHT rather than PROC FSVIEW; "inferior"
aliases for SAS batch: `C-c C-r' for submit region, `C-c C-b' for
submit buffer, `C-c C-x' for goto .log; `C-c C-y' for goto .lst
* ESS[S]: Pressing underscore ("_") once inserts " <- " (as before);
pressing underscore twice inserts a literal underscore. To stop
this smart behaviour, add "(ess-toggle-underscore nil)" to your
.emacs after ess-site has been loaded;
ess-dump-filename-template-proto (new name!) now can be customized
successfully (for S language dialects); Support for Imenu has been
improved; set ess-imenu-use-S to non-nil to get an "Imenu-S" item
on your menubar; ess-help: Now using nice underlines (instead of
`nuke-* ^H_')
* ESS[R]: After (require 'essa-r), `M-x ess-r-var' allows to load
numbers from any Emacs buffer into an existing *R* process; `M-x
ess-rdired' gives a "directory editor" of R objects; fixed
ess-retr-lastvalue-command, i.e. .Last.value bug (thanks to David
Brahm)
* ESS: Support for creating new window frames has been added to ESS.
Inferior ESS processes can be created in dedicated frames by
setting inferior-ess-own-frame to t. ESS help buffers can also
open in new frames; see the documentation for ess-help-own-frame
for details. (Thanks to Kevin Rodgers for contributing code.)
Changes/New Features in 5.1.24:
* The version number is now correct even inside ESS/Emacs
Changes/New Features in 5.1.23:
* Minor more Makefile clean up.
Changes/New Features in 5.1.22:
* Besides info documentation, PDF and HTML documentation are also
provided (instead of built using "make") and available on the web
as well; see ESS web page (http://ess.r-project.org/) and StatLib
(http://lib.stat.cmu.edu/general/ESS/doc)
* Now that info documentation is available, the README.* files are
no longer supported. However, they are still distributed for what
it's worth.
* ESS is now an XEmacs package! See XEmacs Installation HOWTO
(http://www.xemacs.org/Install/index.html) for details
(specifically, items 10-15).
* ESS[SAS]: more user-friendly enhancements for remote SAS batch
jobs with Kermit file transfers (LOG and OUTPUT function key
features now supported). Multiple shells now supported so you can
run SAS on different computers from different buffers by setting
the buffer-local variable ess-sas-shell-buffer to unique buffer
names.
* Major re-vamping of Makefile/Makeconf.
Changes/New Features in 5.1.21:
* ESS[SAS]: info documentation now available!, see ESS->Help for
SAS; `F12' opens GSASFILE nearest point for viewing either within
emacs, when available, or via an external viewer; more syntax
highlighting keywords; more enhancements for remote SAS batch jobs
with Kermit; new framework for remote SAS interactive jobs, see
ess-remote
* ESS[S]: info documentation now available!, see ESS->Help for the S
family
* Makefile: tag now independent of rel; info files made by
doc/Makefile and installed in new info sub-directory
Changes/New Features in 5.1.20:
* New `options()$STERM' in the S dialects (S, S-Plus, R). The S
program can determine the environment in which it is currently
running. ESS sets the option to `iESS' or `ddeESS' when it starts
an S language process. We recommend other specific values for S
language processes that ESS does not start.
* New `ess-mouse-me' function, assigned to S-mouse-3 by default.
User may click on a word or region and then choose from the menu
to display the item, or a summary, or a plot, etc. This feature
is still under development.
* GNU Emacs 21.1 is now supported (fixed for S dialects, SAS & BUGS),
(some from Stephen Eglen).
* XEmacs 21.x is now supported (fixed w32-using-nt bug)
* XEmacs on Win (NT) is better supported.
* Workaround for bug in Sqpe+6 (S-PLUS 6 for Win).
* should now work even when imenu is not available (for old
XEmacsen).
* ESS[SAS]: XEmacs-Imenu fix; `C-TAB' is globalized along with your
function-key definitions, if specified; you can specify your SAS
library definitions outside of autoexec.sas for ess-sas-data-view
with SAS code placed in the variable ess-sas-data-view-libname,
also the dataset name is defaulted to the nearest permanent dataset
to point; Speedbar support now works for permanent datasets, please
ignore first./last.; new font-locking is now the default with more
improvements for font-locking PROCs, macro statements, * ; and %* ;
comments; you can toggle sas-log-mode with `F10' which will
font-lock your .log (if it isn't too big); submit remote .sas
files accessed with ange-ftp, EFS or Tramp (Kermit is
experimental) by setting ess-sas-submit-method to 'sh;
ess-sas-submit-command and ess-sas-submit-command-options are
buffer-local so you can have local file variable sections at the
end of your .sas files to request different executables or specify
special options and the local file variables are re-read at submit
instead of only at file open so that if you make a change it is
picked up immediately;
* ESS[BUGS]: font-lock with `in' fixed.
* for STATA: font-lock bug fixed.
* for Rd mode: `C-c C-v' and `switch-process' in menu. further,
`C-c C-f' prefix (Rd-font) for inserting or surrounding a word by
things such as \code{.}, \code{\link{.}}, \emph{.} etc.
* new functions (ess-directory-function) and (ess-narrow-to-defun)
ess-directory <-> default-directory logic (Jeff Mincy).
* Re-organized Makefile and fixed a few bugs.
Changes/New Features in 5.1.19:
* S+6 now supported (Tony Rossini (Unix) and Rich Heiberger
(Windows))
* New BUGS support through ESS[BUGS] mode (Rodney Sparapani)
Templates assist you in writing .bug and .cmd code (.cmd and .log
are replaced by .bmd and .bog to avoid emacs extension collisions).
Substitution" parameters facilitate "automagic" generation of
data...in" and "init...in" filenames, "const N=" from your data
file and "monitor()/stats()" commands. Activated by pressing
`F12'.
* Fixes for `ess-smart-underscore' SAS breakage (Rich Heiberger)
* You can change between PC and Unix, local and global SAS
function-key definitions interactively (Rich Heiberger)
* `C-Submit' a highlighted region to SAS batch (Rodney Sparapani)
* New and improved SAS syntax highlighting (Rodney Sparapani) To get
the new functionality, set ess-sas-run-make-regexp to nil. Also
available in .log files via `F10'.
* Open a permanent SAS dataset for viewing via `F9' (Rodney
Sparapani) You must have the library defined in autoexec.sas for
it to work.
* User-friendly defaults for `sas-program',
`ess-sas-batch-pre-command' and `ess-sas-batch-post-command' as
well Customize support for these and other ESS[SAS] variables
(Rodney Sparapani)
* `ess-sas-suffix-2' now defaults to .dat via `F11' (Rodney
Sparapani)
* Emacs/XEmacs, Unix/Windows issues collectively handled in
ess-emcs.el
* defadvice solves problem of missing *ESS* (thanks to Jeff Mincy)
* Improved manual a bit by including things that were only in
`README'.
Changes/New Features in 5.1.18:
* New `ess-smart-underscore' function, now assigned to "_" by
default. Inserts `ess-S-assign' (customizable " <- "), unless
inside string and comments where plain "_" is used instead. (MM)
* Fixes for longstanding interactive SAS breakage (RMH)
Changes/New Features in 5.1.17:
* Documentation for Windows Installation (Rich Heiberger)
* removal of ess-vars, finalization of customize support (in the
sense that there is no more use of ess-vars, but that we need to
fix ess-cust) (AJ Rossini)
* Many small (and large) fixes/contributions (MMaechler)
* addition of the "S-equal" variable and provide `M-x
ess-add-MM-keys' a way to remap "_" to `ess-S-assign', typically "
<- ", but customizable. (MMaechler)
Changes/New Features in 5.1.16:
* BUG FIXES
* Better SAS support
Changes/New Features in 5.1.15:
* BUG FIXES
Changes/New Features in 5.1.14:
* Yet more fixes to SAS mode, (Rich Heiberger and Rodney Sparapani)
* Customize support (for most Emacsen which support it) (AJRossini)
* ARC and ViSta support out of the box, and fixes for XLispStat
(AJRossini)
Changes/New Features in 5.1.13:
* Version numbering finally all depending on the ./VERSION file,
thanks to Martin Maechler.
* Yet more fixes to SAS mode, thanks to Rich Heiberger.
Changes/New Features in 5.1.12:
* Splus 5.1 stabilized, thanks to Martin Maechler, Bill Venables,
Chuck Taylor, and others.
* More fixes to SAS mode, thanks to Rodney Sparapani and Rich
Heiberger.
Changes/New Features in 5.1.11:
* More fixes to Stata mode, thanks to Brendan Halpin
(mailto:brendan at essex.ac.uk).
* fixed bugs in ESS-elsewhere, thanks to many testers
* README.SPLUS4WIN has DETAILED instructions for S-PLUS 2000, thanks
to David Brahm (mailto:brahm at alum.mit.edu).
* Fixes to SAS mode, thanks to Rodney Sparapani
Changes/New Features in 5.1.10:
* More fixes to Stata mode
* primitive generic version of ESS-elsewhere
* Small fixes to SAS/Stata.
Changes/New Features in 5.1.9:
* Stata mode works
* Literate Data Analysis using Noweb works
Changes/New Features in 5.1.8:
* Bug fixes
* R documentation mode defaults changed
Changes/New Features in 5.1.2:
* able to use inferior iESS mode to communicate directly with a
running S-Plus 4.x process using the Microsoft DDE protocol. We
use the familiar (from Unix ESS) `C-c C-n' and related key
sequences to send lines from the S-mode file to the inferior S
process. We continue to edit S input files in ESS[S] mode and
transcripts of previous S sessions in ESS Transcript mode. All
three modes know the S language, syntax, and indentation patterns
and provide the syntactic highlighting that eases the programming
tasks.
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