[Emacs-diffs] Changes to eshell.texi

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[Emacs-diffs] Changes to eshell.texi

From:	Glenn Morris
Subject:	[Emacs-diffs] Changes to eshell.texi
Date:	Thu, 06 Sep 2007 04:36:05 +0000
CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Glenn Morris <gm>       07/09/06 04:36:05

Index: eshell.texi
===================================================================
RCS file: eshell.texi
diff -N eshell.texi
--- eshell.texi 15 Apr 2007 20:57:14 -0000      1.32
+++ /dev/null   1 Jan 1970 00:00:00 -0000
@@ -1,948 +0,0 @@
-\input texinfo  @c -*-texinfo-*-
address@hidden %**start of header
address@hidden ../info/eshell
address@hidden Eshell: The Emacs Shell
address@hidden vr fn
address@hidden %**end of header
-
address@hidden
-This manual is for Eshell, the Emacs shell.
-
-Copyright @copyright{} 1999, 2000, 2001, 2002, 2003, 2004,
-2005, 2006, 2007 Free Software Foundation, Inc.
-
address@hidden
-Permission is granted to copy, distribute and/or modify this document
-under the terms of the GNU Free Documentation License, Version 1.2 or
-any later version published by the Free Software Foundation; with no
-Invariant Sections, with the Front-Cover texts being ``A GNU
-Manual'', and with the Back-Cover Texts as in (a) below.  A copy of the
-license is included in the section entitled ``GNU Free Documentation
-License'' in the Emacs manual.
-
-(a) The FSF's Back-Cover Text is: ``You have freedom to copy and modify
-this GNU Manual, like GNU software.  Copies published by the Free
-Software Foundation raise funds for GNU development.''
-
-This document is part of a collection distributed under the GNU Free
-Documentation License.  If you want to distribute this document
-separately from the collection, you can do so by adding a copy of the
-license to the document, as described in section 6 of the license.
address@hidden quotation
address@hidden copying
-
address@hidden Emacs
address@hidden
-* Eshell: (eshell).     A command shell implemented in Emacs Lisp.
address@hidden direntry
-
address@hidden on
-
address@hidden
address@hidden 4
address@hidden The title is printed in a large font.
address@hidden @titlefont{User's Guide}
address@hidden
address@hidden @titlefont{to}
address@hidden
address@hidden @titlefont{Eshell: The Emacs Shell}
address@hidden
address@hidden 2
address@hidden release 2.4
address@hidden -release-
address@hidden ignore
address@hidden 3
address@hidden John Wiegley
address@hidden -date-
-
address@hidden
address@hidden 0pt plus 1filll
address@hidden
address@hidden titlepage
-
address@hidden
-
address@hidden ================================================================
address@hidden                   The real text starts here
address@hidden ================================================================
-
address@hidden
address@hidden Top, What is Eshell?, (dir), (dir)
address@hidden Eshell
-
-This manual documents Eshell, a shell-like command interpretor
-implemented in Emacs Lisp.  It invokes no external processes except for
-those requested by the user.  It is intended to be a functional
-replacement for command shells such as @command{bash}, @command{zsh},
address@hidden, or @command{4dos}; since Emacs itself is capable of
-handling the sort of tasks accomplished by those tools.
address@hidden This manual is updated to release 2.4 of Eshell.
address@hidden ifnottex
-
address@hidden
-* What is Eshell?::             A brief introduction to the Emacs Shell.
-* Command basics::              The basics of command usage.
-* Commands::
-* Arguments::
-* Input/Output::
-* Process control::
-* Extension modules::
-* Extras and Goodies::
-* Bugs and ideas::              Known problems, and future ideas.
-* GNU Free Documentation License:: The license for this documentation.
-* Concept Index::
-* Function and Variable Index::
-* Key Index::
address@hidden menu
-
address@hidden What is Eshell?
address@hidden What is Eshell?
address@hidden what is Eshell?
address@hidden Eshell, what it is
-
-Eshell is a @dfn{command shell} written in Emacs Lisp.  Everything it
-does, it uses Emacs' facilities to do.  This means that Eshell is as
-portable as Emacs itself.  It also means that cooperation with Lisp code
-is natural and seamless.
-
-What is a command shell?  To properly understand the role of a shell,
-it's necessary to visualize what a computer does for you.  Basically, a
-computer is a tool; in order to use that tool, you must tell it what to
-do---or give it ``commands.''  These commands take many forms, such as
-clicking with a mouse on certain parts of the screen.  But that is only
-one form of command input.
-
-By far the most versatile way to express what you want the computer to
-do is by using an abbreviated language called @dfn{script}.  In
-script, instead of telling the computer, ``list my files, please'',
-one writes a standard abbreviated command address@hidden  Typing
address@hidden in a command shell is a script way of telling the computer
-to list your address@hidden is comparable to viewing the
-contents of a folder using a graphical display.}
-
-The real flexibility of this approach is apparent only when you realize
-that there are many, many different ways to list files.  Perhaps you
-want them sorted by name, sorted by date, in reverse order, or grouped
-by type.  Most graphical browsers have simple ways to express this.  But
-what about showing only a few files, or only files that meet a certain
-criteria?  In very complex and specific situations, the request becomes
-too difficult to express using a mouse or pointing device.  It is just
-these kinds of requests that are easily solved using a command shell.
-
-For example, what if you want to list every Word file on your hard
-drive, larger than 100 kilobytes in size, and which hasn't been looked
-at in over six months?  That is a good candidate list for deletion, when
-you go to clean up your hard drive.  But have you ever tried asking your
-computer for such a list?  There is no way to do it!  At least, not
-without using a command shell.
-
-The role of a command shell is to give you more control over what your
-computer does for you.  Not everyone needs this amount of control, and
-it does come at a cost: Learning the necessary script commands to
-express what you want done.  A complicated query, such as the example
-above, takes time to learn.  But if you find yourself using your
-computer frequently enough, it is more than worthwhile in the long run.
-Any tool you use often deserves the time spent learning to master it.
address@hidden the understandably curious, here is what that command
-looks like: But don't let it fool you; once you know what's going on,
-it's easier than it looks: @code{ls -lt **/*.doc(Lk+50aM+5)}.}
-
address@hidden
-* Contributors to Eshell::      People who have helped out!
address@hidden menu
-
address@hidden Contributors to Eshell
address@hidden Contributors to Eshell
address@hidden contributors
address@hidden authors
-
-Contributions to Eshell are welcome.  I have limited time to work on
-this project, but I will gladly add any code you contribute to me to
-this package.
-
-The following persons have made contributions to Eshell.
-
address@hidden @bullet
address@hidden
-Eli Zaretskii made it possible for Eshell to run without requiring
-asynchronous subprocess support.  This is important for MS-DOS, which
-does not have such address@hidden
-
address@hidden
-Miles Bader contributed many fixes during the port to Emacs address@hidden
-
address@hidden
-Stefan Monnier fixed the things which bothered him, which of course made
-things better for address@hidden
-
address@hidden
-Gerd Moellmann also helped to contribute bug fixes during the initial
-integration with Emacs address@hidden
-
address@hidden
-Alex Schroeder contributed code for interactively querying the user
-before overwriting address@hidden
-
address@hidden
-Sudish Joseph helped with some XEmacs compatibility address@hidden
address@hidden itemize
-
-Apart from these, a lot of people have sent suggestions, ideas,
-requests, bug reports and encouragement.  Thanks a lot!  Without you
-there would be no new releases of Eshell.
-
address@hidden Command basics
address@hidden Basic overview
-
-A command shell is a means of entering verbally-formed commands.  This
-is really all that it does, and every feature described in this manual
-is a means to that end.  Therefore, it's important to take firm hold on
-exactly what a command is, and how it fits in the overall picture of
-things.
-
address@hidden
-* Commands verbs::              Commands always begin with a verb.
-* Command arguments::           Some verbs require arguments.
address@hidden menu
-
address@hidden Commands verbs
address@hidden Commands verbs
-
-Commands are expressed using @dfn{script}, a special shorthand language
-computers can understand with no trouble.  Script is an extremely simple
-language; oddly enough, this is what makes it look so complicated!
-Whereas normal languages use a variety of embellishments, the form of a
-script command is always:
-
address@hidden
address@hidden address@hidden
address@hidden example
-
-The verb expresses what you want your computer to do.  There are a fixed
-number of verbs, although this number is usually quite large.  On the
-author's computer, it reaches almost 1400 in number.  But of course,
-only a handful of these are really necessary.
-
-Sometimes, the verb is all that's written.  A verb is always a single
-word, usually related to the task it performs.  @command{reboot} is a
-good example.  Entering that on GNU/Linux will reboot the
-computer---assuming you have sufficient privileges.
-
-Other verbs require more information.  These are usually very capable
-verbs, and must be told specifically what to do.  The extra information
-is given in the form of @dfn{arguments}.  For example, the
address@hidden verb prints back whatever arguments you type.  It
-requires these arguments to know what to echo.  A proper use of
address@hidden looks like this:
-
address@hidden
-echo This is an example of using echo!
address@hidden example
-
-This script command causes the computer to echo back: ``This is an
-example of using echo!''
-
-Although command verbs are always simple words, like @command{reboot} or
address@hidden, arguments may have a wide variety of forms.  There are
-textual arguments, numerical arguments---even Lisp arguments.
-Distinguishing these different types of arguments requires special
-typing, for the computer to know exactly what you mean.
-
address@hidden Command arguments
address@hidden Command arguments
-
-Eshell recognizes several different kinds of command arguments:
-
address@hidden
address@hidden Strings (also called textual arguments)
address@hidden Numbers (floating point or integer)
address@hidden Lisp lists
address@hidden Lisp symbols
address@hidden Emacs buffers
address@hidden Emacs process handles
address@hidden enumerate
-
-Most users need to worry only about the first two.  The third, Lisp lists,
-occur very frequently, but almost always behind the scenes.
-
-Strings are the most common type of argument, and consist of nearly any
-character.  Special characters---those used by Eshell
-specifically---must be preceded by a backslash (@samp{\}).  When in doubt, it
-is safe to add backslashes anywhere and everywhere.
-
-Here is a more complicated @command{echo} example:
-
address@hidden
-echo A\ Multi-word\ Argument\ With\ A\ \$\ dollar
address@hidden example
-
-Beyond this, things get a bit more complicated.  While not beyond the
-reach of someone wishing to learn, it is definitely beyond the scope of
-this manual to present it all in a simplistic manner.  Get comfortable
-with Eshell as a basic command invocation tool, and learn more about the
-commands on your system; then come back when it all sits more familiarly
-on your mind.  Have fun!
-
address@hidden Commands
address@hidden Commands
-
address@hidden
-* Invocation::
-* Completion::
-* Aliases::
-* History::
-* Scripts::
-* Built-ins::
address@hidden menu
-
-Essentially, a command shell is all about invoking commands---and
-everything that entails.  So understanding how Eshell invokes commands
-is the key to comprehending how it all works.
-
address@hidden Invocation
address@hidden Invocation
-
-Unlike regular system shells, Eshell never invokes kernel functions
-directly, such as @code{exec(3)}.  Instead, it uses the Lisp functions
-available in the Emacs Lisp library.  It does this by transforming the
-command you specify into a callable Lisp address@hidden see the Lisp
-form that will be invoked, type: @samp{eshell-parse-command "echo
-hello"}}
-
-This transformation, from the string of text typed at the command
-prompt, to the ultimate invocation of either a Lisp function or external
-command, follows these steps:
-
address@hidden
address@hidden Parse the command string into separate arguments.
address@hidden
address@hidden enumerate
-
address@hidden Completion
address@hidden Completion
-
address@hidden Aliases
address@hidden Aliases
-
address@hidden History
address@hidden History
-
-Eshell knows a few built-in variables:
-
address@hidden @code
-
address@hidden $+
address@hidden $+
-This variable always contains the current working directory.
-
address@hidden $-
address@hidden $-
-This variable always contains the previous working directory (the
-current working directory from before the last @code{cd} command).
-
address@hidden table
-
address@hidden Scripts
address@hidden Scripts
-
-
address@hidden Built-ins
address@hidden Built-in commands
-
-Here is a list of built-in commands that Eshell knows about:
-
address@hidden @code
-
address@hidden cd
address@hidden cd
-This command changes the current working directory.  Usually, it is
-invoked as @samp{cd foo} where @file{foo} is the new working
-directory.  But @code{cd} knows about a few special arguments:
-
-When it receives no argument at all, it changes to the home directory.
-
-Giving the command @samp{cd -} changes back to the previous working
-directory (this is the same as @samp{cd $-}).
-
-The command @samp{cd =} shows the directory stack.  Each line is
-numbered.
-
-With @samp{cd =foo}, Eshell searches the directory stack for a
-directory matching the regular expression @samp{foo} and changes to
-that directory.
-
-With @samp{cd -42}, you can access the directory stack by number.
-
address@hidden table
-
-
address@hidden Arguments
address@hidden Arguments
-
address@hidden
-* The Parser::
-* Variables::
-* Substitution::
-* Globbing::
-* Predicates::
address@hidden menu
-
address@hidden The Parser
address@hidden The Parser
-
address@hidden Variables
address@hidden Variables
-
address@hidden Substitution
address@hidden Substitution
-
address@hidden Globbing
address@hidden Globbing
-
address@hidden Predicates
address@hidden Predicates
-
-
address@hidden Input/Output
address@hidden Input/Output
-
address@hidden Process control
address@hidden Process control
-
-
address@hidden Extension modules
address@hidden Extension modules
-
address@hidden
-* Writing a module::
-* Module testing::
-* Directory handling::
-* Key rebinding::
-* Smart scrolling::
-* Terminal emulation::
-* Built-in UNIX commands::
address@hidden menu
-
address@hidden Writing a module
address@hidden Writing a module
-
address@hidden Module testing
address@hidden Module testing
-
address@hidden Directory handling
address@hidden Directory handling
-
address@hidden Key rebinding
address@hidden Key rebinding
-
address@hidden Smart scrolling
address@hidden Smart scrolling
-
address@hidden Terminal emulation
address@hidden Terminal emulation
-
address@hidden Built-in UNIX commands
address@hidden Built-in UNIX commands
-
-
address@hidden Extras and Goodies
address@hidden Extras and Goodies
-
address@hidden Bugs and ideas
address@hidden Bugs and ideas
address@hidden reporting bugs and ideas
address@hidden bugs, how to report them
address@hidden author, how to reach
address@hidden email to the author
address@hidden FAQ
address@hidden problems, list of common
-
-If you find a bug or misfeature, don't hesitate to let me know!  Send
-email to @email{johnw@@gnu.org}.  Feature requests should also be sent
-there.  I prefer discussing one thing at a time.  If you find several
-unrelated bugs, please report them separately.
-
-If you have ideas for improvements, or if you have written some
-extensions to this package, I would like to hear from you.  I hope you
-find this package useful!
-
address@hidden
-* Known problems::
address@hidden menu
-
address@hidden Known problems
address@hidden Known problems
address@hidden known bugs
address@hidden bugs, known
-
-Below is complete list of known problems with Eshell version 2.4.2,
-which is the version included with Emacs 22.
-
address@hidden @asis
address@hidden Documentation incomplete
-
address@hidden Differentiate between aliases and functions
-
-Allow for a bash-compatible syntax, such as:
-
address@hidden
-alias arg=blah
-function arg () @{ blah $* @}
address@hidden example
-
address@hidden @samp{for i in 1 2 3 @{ grep -q a b && *echo has it @} | wc -l} 
outputs result after prompt
-
-In fact, piping to a process from a looping construct doesn't work in
-general.  If I change the call to @code{eshell-copy-handles} in
address@hidden to use @code{eshell-protect}, it seems
-to work, but the output occurs after the prompt is displayed.  The whole
-structured command thing is too complicated at present.
-
address@hidden Error with @command{bc} in @code{eshell-test}
-
-On some XEmacs system, the subprocess interaction test fails
-inexplicably, although @command{bc} works fine at the command prompt.
-
address@hidden Eshell does not delete @file{*Help*} buffers in XEmacs 21.1.8+
-
-In XEmacs 21.1.8, the @file{*Help*} buffer has been renamed such that
-multiple instances of the @file{*Help*} buffer can exist.
-
address@hidden Pcomplete sometimes gets stuck
-
-You press @key{TAB}, but no completions appear, even though the
-directory has matching files.  This behavior is rare.
-
address@hidden @samp{grep python $<rpm -qa>} doesn't work, but using 
@samp{*grep} does
-
-This happens because the @code{grep} Lisp function returns immediately,
-and then the asynchronous @command{grep} process expects to examine the
-temporary file, which has since been deleted.
-
address@hidden Problem with C-r repeating text
-
-If the text @emph{before point} reads "./run", and you type @kbd{C-r r u
-n}, it will repeat the line for every character typed.
-
address@hidden Backspace doesn't scroll back after continuing (in smart mode)
-
-Hitting space during a process invocation, such as @command{make}, will
-cause it to track the bottom of the output; but backspace no longer
-scrolls back.
-
address@hidden It's not possible to fully @code{unload-feature} Eshell
-
address@hidden Menu support was removed, but never put back
-
address@hidden Using C-p and C-n with rebind gets into a locked state
-
-This happened a few times in Emacs 21, but has been unreproducible
-since.
-
address@hidden If an interactive process is currently running, @kbd{M-!} 
doesn't work
-
address@hidden Use a timer instead of @code{sleep-for} when killing child 
processes
-
address@hidden Piping to a Lisp function is not supported
-
-Make it so that the Lisp command on the right of the pipe is repeatedly
-called with the input strings as arguments.  This will require changing
address@hidden to handle non-process targets.
-
address@hidden Input redirection is not supported
-
-See the above entry.
-
address@hidden Problem running @command{less} without arguments on Windows
-
-The result in the Eshell buffer is:
-
address@hidden
-Spawning child process: invalid argument
address@hidden example
-
-Also a new @command{less} buffer was created with nothing in address@hidden
-(presumably this holds the output of @command{less}).
-
-If @command{less.exe} is invoked from the Eshell command line, the
-expected output is written to the buffer.
-
-Note that this happens on NT-Emacs 20.6.1 on Windows 2000. The term.el
-package and the supplied shell both use the @command{cmdproxy} program
-for running shells.
-
address@hidden Implement @samp{-r}, @samp{-n} and @samp{-s} switches for 
@command{cp}
-
address@hidden Make @kbd{M-5 M-x eshell} switch to ``*eshell<5>*'', creating if 
need be
-
address@hidden @samp{mv @var{dir} @var{file}.tar} does not remove directories
-
-This is because the tar option --remove-files doesn't do so.  Should it
-be Eshell's job?
-
address@hidden Bind @code{standard-output} and @code{standard-error}
-
-This would be so that if a Lisp function calls @code{print}, everything
-will happen as it should (albeit slowly).
-
address@hidden When an extension module fails to load, @samp{cd /} gives a Lisp 
error
-
address@hidden If a globbing pattern returns one match, should it be a list?
-
address@hidden Make sure syntax table is correct in Eshell mode
-
-So that @kbd{M-DEL} acts in a predictable manner, etc.
-
address@hidden Allow all Eshell buffers to share the same history and list-dir
-
address@hidden There is a problem with script commands that output to 
@file{/dev/null}
-
-If a script file, somewhere in the middle, uses @samp{> /dev/null},
-output from all subsequent commands is swallowed.
-
address@hidden Split up parsing of text after @samp{$} in @file{esh-var.el}
-
-Make it similar to the way that @file{esh-arg.el} is structured.
-Then add parsing of @samp{$[?\n]}.
-
address@hidden After pressing @kbd{M-RET}, redisplay before running the next 
command
-
address@hidden Argument predicates and modifiers should work anywhere in a path
-
address@hidden
-/usr/local/src/editors/vim $ vi **/CVS(/)/Root(.)
-Invalid regexp: "Unmatched ( or \\("
address@hidden example
-
-With @command{zsh}, the glob above expands to all files named
address@hidden in directories named @file{CVS}.
-
address@hidden Typing @samp{echo address@hidden address@hidden/bin<TAB>} 
results in a Lisp error
-
-Perhaps it should interpolate all permutations, and make that the
-globbing result, since otherwise hitting return here will result in
-``(list of filenames)/bin'', which is never valuable.  Thus, one could
address@hidden only C backup files by using @samp{ls address@hidden 
address@hidden
-In that case, having an alias command name @command{glob} for
address@hidden would be useful.
-
address@hidden Once symbolic mode is supported for @command{umask}, implement 
@command{chmod} in Lisp
-
address@hidden Create @code{eshell-expand-file-name}
-
-This would use a data table to transform things such as @samp{~+},
address@hidden, etc.
-
address@hidden Abstract @file{em-smart.el} into @file{smart-scroll.el}
-
-It only really needs: to be hooked onto the output filter and the
-pre-command hook, and to have the input-end and input-start markers.
-And to know whether the last output group was ``successful.''
-
address@hidden Allow for fully persisting the state of Eshell
-
-This would include: variables, history, buffer, input, dir stack, etc.
-
address@hidden Implement D as an argument predicate
-
-It means that files beginning with a dot should be included in the
-glob match.
-
address@hidden A comma in a predicate list should mean OR
-
-At the moment, this is not supported.
-
address@hidden Error if a glob doesn't expand due to a predicate
-
-An error should be generated only if @code{eshell-error-if-no-glob} is
address@hidden
-
address@hidden @samp{(+ RET SPC TAB} does not cause 
@code{indent-according-to-mode} to occur
-
address@hidden Create @code{eshell-auto-accumulate-list}
-
-This is a list of commands for which, if the user presses @kbd{RET}, the
-text is staged as the next Eshell command, rather than being sent to the
-current interactive process.
-
address@hidden Display file and line number if an error occurs in a script
-
address@hidden @command{wait} doesn't work with process ids at the moment
-
address@hidden Enable the direct-to-process input code in @file{em-term.el}
-
address@hidden Problem with repeating @samp{echo address@hidden /address@hidden
-
-With smart display active, if @kbd{RET} is held down, after a while it
-can't keep up anymore and starts outputting blank lines.  It only
-happens if an asynchronous process is address@hidden
-
-I think the problem is that @code{eshell-send-input} is resetting the
-input target location, so that if the asynchronous process is not done
-by the time the next @kbd{RET} is received, the input processor thinks
-that the input is meant for the process; which, when smart display is
-enabled, will be the text of the last command line!  That is a bug in
-itself.
-
-In holding down @kbd{RET} while an asynchronous process is running,
-there will be a point in between termination of the process, and the
-running of @code{eshell-post-command-hook}, which would cause
address@hidden to call @code{eshell-copy-old-input}, and then
-process that text as a command to be run after the process.  Perhaps
-there should be a way of killing pending input between the death of the
-process, and the @code{post-command-hook}.
-
address@hidden Allow for a more aggressive smart display mode
-
-Perhaps toggled by a command, that makes each output block a smart
-display block.
-
address@hidden Create more meta variables
-
address@hidden @samp
address@hidden $!
-The reason for the failure of the last disk command, or the text of the
-last Lisp error.
-
address@hidden $=
-A special associate array, which can take references of the form
address@hidden  It indexes into the directory ring.
address@hidden table
-
address@hidden Eshell scripts can't execute in the background
-
address@hidden Support zsh's ``Parameter Expansion'' syntax, i.e. 
@address@hidden@var{name}:address@hidden@}}
-
address@hidden Write an @command{info} alias that can take arguments
-
-So that the user can enter @samp{info chmod}, for example.
-
address@hidden Create a mode @code{eshell-browse}
-
-It would treat the Eshell buffer as a outline.  Collapsing the outline
-hides all of the output text.  Collapsing again would show only the
-first command run in each directory
-
address@hidden Allow other revisions of a file to be referenced using 
@address@hidden@}}
-
-This would be expanded by @code{eshell-expand-file-name} (see above).
-
address@hidden Print ``You have new mail'' when the ``Mail'' icon is turned on
-
address@hidden Implement @kbd{M-|} for Eshell
-
address@hidden Implement input redirection
-
-If it's a Lisp function, input redirection implies @command{xargs} (in a
address@hidden).  If input redirection is added, also update the
address@hidden, and the delimiter list.
-
address@hidden Allow @samp{#<@var{word} @var{arg}>} as a generic syntax
-
-With the handling of @emph{word} specified by an
address@hidden
-
address@hidden In @code{eshell-veal-using-options}, allow a @code{:complete} tag
-
-It would be used to provide completion rules for that command.  Then the
-macro will automagically define the completion function.
-
address@hidden For @code{eshell-command-on-region}, apply redirections to the 
result
-
-So that @samp{+ > 'blah} would cause the result of the @code{+} (using
-input from the current region) to be inserting into the symbol
address@hidden
-
-If an external command is being invoked, the input is sent as standard
-input, as if a @samp{cat <region> |} had been invoked.
-
-If a Lisp command, or an alias, is invoked, then if the line has no
-newline characters, it is divided by whitespace and passed as arguments
-to the Lisp function.  Otherwise, it is divided at the newline
-characters.  Thus, invoking @code{+} on a series of numbers will add
-them; @code{min} would display the smallest figure, etc.
-
address@hidden Write @code{eshell-script-mode} as a minor mode
-
-It would provide syntax, abbrev, highlighting and indenting support like
address@hidden and @code{shell-mode}.
-
address@hidden In the history mechanism, finish the @command{bash}-style support
-
-This means @samp{!n}, @samp{!#}, @samp{!:%}, and @samp{!:1-} as separate
-from @samp{!:1*}.
-
address@hidden Support the -n command line option for @command{history}
-
address@hidden Implement @command{fc} in Lisp
-
address@hidden Specifying a frame as a redirection target should imply the 
currently active window's buffer
-
address@hidden Implement @samp{>@var{func-or-func-list}}
-
-This would allow for an ``output translators'', that take a function to
-modify output with, and a target.  Devise a syntax that works well with
-pipes, and can accommodate multiple functions (i.e., @samp{>'(upcase
-regexp-quote)} or @samp{>'upcase}).
-
address@hidden Allow Eshell to read/write to/from standard input and output
-
-This would be optional, rather than always using the Eshell buffer.
-This would allow it to be run from the command line (perhaps).
-
address@hidden Write a @command{help} command
-
-It would call subcommands with @option{--help}, or @option{-h} or
address@hidden/?}, as appropriate.
-
address@hidden Implement @command{stty} in Lisp
-
address@hidden Support @command{rc}'s matching operator, e.g. @samp{~ 
(@var{list}) @var{regexp}}
-
address@hidden Implement @command{bg} and @command{fg} as editors of 
@code{eshell-process-list}
-
-Using @command{bg} on a process that is already in the background does
-nothing.  Specifying redirection targets replaces (or adds) to the list
-current being used.
-
address@hidden Have @command{jobs} print only the processes for the current 
shell
-
address@hidden How can Eshell learn if a background process has requested input?
-
address@hidden Support @samp{2>&1} and @samp{>&} and @samp{2>} and @samp{|&}
-
-The syntax table for parsing these should be customizable, such that the
-user could change it to use rc syntax: @samp{>[2=1]}.
-
address@hidden Allow @samp{$_[-1]}, which would indicate the last element of 
the array
-
address@hidden Make @samp{$x[*]} equal to listing out the full contents of 
@samp{x}
-
-Return them as a list, so that @samp{$_[*]} is all the arguments of the
-last command.
-
address@hidden Copy ANSI code handling from @file{term.el} into 
@file{em-term.el}
-
-Make it possible for the user to send char-by-char to the underlying
-process.  Ultimately, I should be able to move away from using term.el
-altogether, since everything but the ANSI code handling is already part
-of Eshell.  Then, things would work correctly on MS-Windows as well
-(which doesn't have @file{/bin/sh}, although @file{term.el} tries to use
-it).
-
address@hidden Make the shell spawning commands be visual
-
-That is, make (@command{su}, @command{bash}, @command{telnet},
address@hidden, @command{rsh}, etc.) be part of
address@hidden  The only exception is if the shell is
-being used to invoke a single command.  Then, the behavior should be
-based on what that command is.
-
address@hidden Create a smart viewing command named @command{open}
-
-This would search for some way to open its argument (similar to opening
-a file in the Windows Explorer).
-
address@hidden Alias @command{read} to be the same as @command{open}, only 
read-only
-
address@hidden Write a @command{tail} command which uses @code{view-file}
-
-It would move point to the end of the buffer, and then turns on
-auto-revert mode in that buffer at frequent intervals---and a
address@hidden alias which assumes an upper limit of
address@hidden characters per line.
-
address@hidden Make @command{dgrep} load @code{dired}, mark everything, then 
invoke @code{dired-do-search}
-
address@hidden Write mesh.c
-
-This would run Emacs with the appropriate arguments to invoke Eshell
-only.  That way, it could be listed as a login shell.
-
address@hidden Use an intangible @code{PS2} string for multi-line input prompts
-
address@hidden Auto-detect when a command is visual, by checking @code{TERMCAP} 
usage
-
address@hidden The first keypress after @kbd{M-x watson} triggers 
`eshell-send-input'
-
address@hidden Make @kbd{/} electric
-
-So that it automatically expands and corrects pathnames.  Or make
-pathname completion for Pcomplete auto-expand @samp{/u/i/std<TAB>} to
address@hidden/usr/include/std<TAB>}.
-
address@hidden Write the @command{pushd} stack to disk along with 
@code{last-dir-ring}
-
address@hidden Add options to @code{eshell/cat} which would allow it to sort 
and uniq
-
address@hidden Implement @command{wc} in Lisp
-
-Add support for counting sentences, paragraphs, pages, etc.
-
address@hidden Once piping is added, implement @command{sort} and 
@command{uniq} in Lisp
-
address@hidden Implement @command{touch} in Lisp
-
address@hidden Implement @command{comm} in Lisp
-
address@hidden Implement an @command{epatch} command in Lisp
-
-This would call @code{ediff-patch-file}, or @code{ediff-patch-buffer},
-depending on its argument.
-
address@hidden Have an option such that @samp{ls -l} generates a dired buffer
-
address@hidden Write a version of @command{xargs} based on command rewriting
-
-That is, @samp{find X | xargs Y} would be indicated using @samp{Y
address@hidden address@hidden  Maybe @code{eshell-do-pipelines} could be 
changed to
-perform this on-thy-fly rewriting.
-
address@hidden Write an alias for @command{less} that brings up a 
@code{view-mode} buffer
-
-Such that the user can press @key{SPC} and @key{DEL}, and then @key{q}
-to return to Eshell.  It would be equivalent to:
address@hidden > #<buffer Y>; view-buffer #<buffer Y>}.
-
address@hidden Make @code{eshell-mode} as much a full citizen as 
@code{shell-mode}
-
-Everywhere in Emacs where @code{shell-mode} is specially noticed, add
address@hidden there.
-
address@hidden Permit the umask to be selectively set on a @command{cp} target
-
address@hidden Problem using @kbd{M-x eshell} after using @code{eshell-command}
-
-If the first thing that I do after entering Emacs is to run
address@hidden and invoke @command{ls}, and then use @kbd{M-x
-eshell}, it doesn't display anything.
-
address@hidden @kbd{M-RET} during a long command (using smart display) doesn't 
work
-
-Since it keeps the cursor up where the command was invoked.
-
address@hidden table
-
address@hidden GNU Free Documentation License
address@hidden GNU Free Documentation License
address@hidden doclicense.texi
-
address@hidden Concept Index
address@hidden Concept Index
-
address@hidden cp
-
address@hidden Function and Variable Index
address@hidden Function and Variable Index
-
address@hidden fn
-
address@hidden Key Index
address@hidden Key Index
-
address@hidden ky
address@hidden
-
address@hidden
-   arch-tag: 776409ba-cb15-42b9-b2b6-d2bdc7ebad01
address@hidden ignore
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