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branch.
Major changes between versions 4.2 and 4.3
------------------------------------------
- There is support for multibyte character sets in the line editor,
though not the main shell. See Multibyte Character Support in INSTALL.
- The shell can now run an installation function for a new user
(one with no .zshrc, .zshenv, .zprofile or .zlogin file) without any
additional setting up by the administrator.
- The manual now has a Roadmap section (manual page zshroadmap) to
give new users an indication of the most interesting parts of the manual.
- New option PROMPT_SP, on by default, to work around the problem that the
line editor can overwrite output with no newline at the end.
- New option HIST_SAVE_BY_COPY (on by default): history is saved by
copying and renaming instead of directly overwriting.
- New redirection syntax e.g. {myfd}>file opens a new file descriptor
and stores the number in $myfd, so that >&$myfd will work. Chosen not to
break existing code (and to be compatible with proposals for the Korn
shell).
- Substitutions of the form ${var:-"$@"}, ${var:+"$@"} and similar where
word-splitting is applied to the text after the :- or :+ (in particular,
where the SH_WORD_SPLIT option is in effect for compatibility) now behave
as in other Bourne- and POSIX-compatible shells when in the appropriate
emulation mode.
- New Posix-style zsh-specific tests [[:IDENT:]], [[:IFS:]],
[[:IFSSPACE:]], [[:WORD:]] test if character can appear in identifier, is
an IFS character, is an IFS whitespace character, or is considered as part
of a word (is alphanumeric or appears in $WORDCHARS). Note the pattern
code doesn't yet handle multibyte characters.
- The idiom =(<<<...) is optimised so that the shell internally turns
the ... into the contents of a file whose name is then substituted.
- Supplied functions catch and throw provide limited support for
exception handling using the `{ ... } always { ... }' syntax.
- Signals now accept the SIG as part of the name for compatibility with
other shells.
- Editor function argument-base allows non-decimal arguments for
editor widgets.
- As always, there are many enhancements to completion functions.
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Zsh is a UNIX command interpreter (shell) which of the standard shells
most resembles the Korn shell (ksh), although it is not completely
compatible. It includes enhancements of many types, notably in the
command-line editor, options for customising its behaviour, filename
globbing, features to make C-shell (csh) users feel more at home and
extra features drawn from tcsh (another `custom' shell).
Package provided in private mail by Masao Uebayashi <uebayasi@soum.co.jp>
as a followup to pkg/12721.
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