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Diffstat (limited to 'Etc/NEWS')
| -rw-r--r-- | Etc/NEWS | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/Etc/NEWS b/Etc/NEWS new file mode 100644 index 000000000..e4bafc08d --- /dev/null +++ b/Etc/NEWS @@ -0,0 +1,203 @@ +------------------------------------- +CHANGES FROM PREVIOUS VERSIONS OF ZSH +------------------------------------- + +New features in zsh version 3.1 (beta version) +---------------------------------------------- + +On most operating systems zsh can load binary modules dynamically at +run-time. ZLE and the compctl builtin are now reside in a separate +module which is loaded automatically on demand. + +for ((expr; expr; expr)) do ... done loop syntax from AT&T ksh93 is +now supported. + +POSIX globbing character classes ([:alnum:] etc.) are now supported. + +ksh's case fall-through feature (;&) is supported. + +ksh93's $'' quoting syntax is supported. + +Restricted mode is now supported. This is controlled by the new option +RESTRICTED (-r). + +New options BARE_GLOB_QUAL, HIST_NO_FUNCTIONS (alias NO_LOG), KSH_GLOB, +PRINT_EIGHT_BIT, PROMPT_BANG, PROMPT_PERCENT, RM_STAR_WAIT. + +Options ALWAYS_LAST_PROMPT, APPEND_HISTORY, AUTO_LIST, AUTO_MENU, +AUTO_PARAM_KEYS, AUTO_PARAM_SLASH, AUTO_REMOVE_SLASH, LIST_AMBIGUOUS +and LIST_TYPES are now on by default. + +In ZLE, arbitrarily many keymaps can be defined. Multi-character +keybindings now work. + +Completion can be performed within a brace expansion. + +EMACS-like universal-argument function. + + +New features in zsh version 3.0 +------------------------------- + +Trailing "/" in a glob pattern now works like in other shell thus it +can no longer be used as a sorthand for "(/)". + +Much improved sh/ksh emulation. When zsh is invoked as sh it mostly +conforms to POSIX 1003.2. + +Enhanced parameter expansion features: new flags: A, @, e, W, p, f, F. +Expansions can be nested. For example, +"${${(M)${(f@)$(<builtin.pro)}:#char*}[2][(w)3]}" expands to the third +word of the second line of builtin.pro which begins with char. See +zshexpn(1) for the details. + +***/foo glob does recursive directory search following symbolic links. + +Traps defined by the trap builtin are now executed in the current shell +environment and not as a shell function. This means that $1 is not set +to the signal number. Of course the TRAPxxx functions continue working +as before. + +Traps defined by the trap builtin are reset to their default values in +subshells. + +Option names can be prefixed by `no' to unset an option. +setopt no_option_name is the same as unsetopt option_name. +This change affects the output of the setopt and unsetopt +builtins when these are invoked without arguments. See +the zshoptions manual page for more explanation. + +!, {, } and [[ are now reserved words. Things like [[-z $foo]] or {foo} +should not be used. {foo} still works if the IGNORE_BRACES option is not +set but this feature may be removed in the future. [[ -z $foo ]] and +{ foo } should be used instead. + +HOSTTYPE special parameter is removed. The new OSTYPE, MACHTYPE and +VENDOR parameters should be used instead. + +VERSION parameter is renamed to ZSH_VERSION + +exec now saves the history in interactive shells. If you do not like this +behaviour you can alias exec to 'unset HISTFILE ; exec'. + +${~spec}, ${=spec} and ${^spec} used to toggle the effect of +globsubst/shwordsplit/rcexpandparam. Now these force the corresponding +option on. ~, = or ^ can be doubled to force the relevant option off for +the substitution. + +Explicitly requested word splitting like ${=spec} or ${(s:delim:)spec} +will be executed even if the substitution is double quoted. + +The right-hand side of assignments are no longer globbed by default hence +assignment foo=* will assign '*' as a value of foo. Use the foo=( * ) +array assignment syntax to get the old behaviour. Alternatively the +GLOB_ASSIGN can be set to emulate the old behaviour but the usage of this +option is strongly discouraged and this option may be completely removed in +the future. + +foo=$bar no longer creates an array even if bar is an array. Use +foo=( $bar ) or even better, foo=( "$bar[@]" ) instead. + +When foo is an array parameter ${#foo} will always return the length of the +array even if the substitution is double quoted. ${(c)#foo} should be used +to get back the old behaviour. + +When the prompt_subst option is set prompts are fully expanded using +parameter expansion, command substitution and arithmetic expansion. +In 2.5 backquote substitution was not performed in the prompts so this +change might cause problems in some startup scripts if ` is used literally +in prompts. + +History substitution is now not performed if the history escape character +appears in a single-quoted string. This may break some interactive shell +functions which use \! in single-quoted strings. + +The UID, EUID, GID, EGID parameters can be assigned now. The assignment +executes the setuid(), seteuid(), setgid(), setegid() respectively. On +systems where setuid and seteuid is not supported these functions are +emulated using setreuid or setresuid which may result in a different +behaviour. + +Assigning the USERNAME parameter will call setuid(uid) where uid is the +user id of the specified user. + +The privileged (-p) option is automatically set on invocation if euid != uid +or egid != gid. If this option is set no user startup files are sourced. +The shell will drop privileges when this option is unset by resetting its +euid to uid and its egid to gid. + +The =number substitution for accessing the directory stack is changed to +~number to allow =command substitution when a command name begins with a +digit. + +<> is a redirection operator which opens the standard input for both +reading and writing. To match a number use <->. + +Option letters -1 and -C for PRINT_EXIT_VALUE and NO_CLOBBER are swapped: +`set -C' sets NO_CLOBBER and `set -1' sets PRINT_EXIT_VALUE. + +AUTO_PUSHD behaviour is changed. Now cd without arguments will always go +to the $HOME directory even if AUTO_PUSHD is set and PUSHD_TO_HOME is not +set. If you preferred the old behaviour you can alias cd to pushd. + +IFS word splitting with SH_WORD_SPLIT and the splitting of the input in the +read builtin has changed in cases when IFS contains characters other than +<space>, <tab>, <newline>. See the description of IFS in the zshparam +manual page for more details. + + +New features in zsh version 2.5 +------------------------------- + +Greatly expanded completion possibilities. Programmable completion +allows detailed control over what arguments of what commands can be +completed to what. See dots/zcomp in the distribution for examples. + +Expand filenames with ~ and = on the right hand side of parameter +assignments. New option MAGIC_EQUAL_SUBST to do it in all +identifier=expression arguments. + +${+name} becomes 1 or 0 if name is set or unset. ${~spec} toggles +GLOB_SUBST in substitution. Parameter substitution takes lots +of flags in the format ${(flags)name}. + +New glob qualifiers for block/character special files, times in glob +qualifiers can be in months, weeks, days, hours, minutes. Qualifiers can +work on links or on what they point to. Qualifiers separated by commas +are or-ed. + +New parameter substitution modifiers (fFwW) to repeat actions. New +option CSH_JUNKIE_HISTORY. + +New line editor functions history-beginning-search-backward, +history-beginning-search-forward, expand-or-complete-prefix, push-input, +push-line-or-edit. + +Assign to part of a string, use qualifiers on string subscription with +$foo[(qual)2,5] + +New parameters: EGID, EUID, KEYTIMEOUT + +New prompt escape sequence %_ to get constructs like for and while in +the secondary prompt. %E in prompt clears to end of screen. + +Conditional expressions in PROMPT and WATCHFMT. + +New options ALWAYS_LAST_PROMPT, ALWAYS_TO_END, AUTO_PARAM_KEYS, +COMPLETE_ALIASES, COMPLETE_IN_WORD, CSH_JUNKIE_HISTORY, GLOB_SUBST, +LIST_AMBIGUOUS, MAGIC_EQUAL_SUBST, NO_FLOW_CONTROL, PROMPT_SUBST + +New option -m to many builtins makes arguments subject to pattern +matching. + +Bindkey can now bind both key sequences and prefixes of those. You can +for example bind ESC and function keys sending ESC sequences. + +Additional options to read builtin to use in functions called by +completion. + +New options to print to sort arguments and print them in columns. + +Some additional resource limits can be specified. + +Some editor functions now work in the minibuffer. |