diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | NEWS | 87 |
2 files changed, 65 insertions, 29 deletions
@@ -1,3 +1,8 @@ +2010-11-30 Peter Stephenson <pws@csr.com> + + * unposted: NEWS: add news about ${NAME:OFFSET} and took the + opportunity for a general tidy up. + 2010-11-27 Barton E. Schaefer <schaefer@zsh.org> * 28461: Src/exec.c: flush stderr in PRINT_EXIT_VALUE handling. @@ -13867,5 +13872,5 @@ ***************************************************** * This is used by the shell to define $ZSH_PATCHLEVEL -* $Revision: 1.5131 $ +* $Revision: 1.5132 $ ***************************************************** @@ -11,17 +11,35 @@ When the shell is invoked with the base name of a script, for example as `zsh scriptname', previous versions of zsh have used the name directly, whereas other shells use the value of $PATH to find the script. The option PATH_SCRIPT has been added to provide the alternative behaviour. +This is turned on where appropriate in compatibility modes. + +Parameters, globbing, etc. +-+-+-+-+-+-+-+-+-+-+-+-+-+ + +Parameter expansion has been enhanced to provide the ${NAME:OFFSET} and +${NAME:OFFSET:LENGTH} syntax for substrings and subarrays present in +several other shells. OFFSET always uses zero-based indexing. The only +clash with existing zsh syntax occurs if OFFSET begins with an +alphabetic character or `&', which is not likely. + +The (D) flag in parameter expansion abbreviates directories in the +substituted value. The (q-) flag does minimal shell quotation of arguments +for maximum human readability of the result. The glob qualifier P can be used to add a separate word before each match. For example, *(P:-f:) produces the command line `-f file1 -f file2 ...'. -The module zsh/system has a new "zsystem" builtin whose subcommands perform -system level tasks. Currently "zsystem flock" performs advisory file -locking (for aficionados, this uses the fcntl() system call so works over -the network on Linux). This is a particularly convenient way of locking -files for the length of a subshell. "zsystem supports flock" provides a -test for this feature. +Regular expression matches now use the same variables for storing matched +components as shell pattern matching. The function system now provides the +function regexp-replace for replacing text using regular expressions. The +zle widget functions replace-string, replace-string-again, if defined with +regex in the name (e.g. "zle -N replace-regexp replace-string"), perform +regular expression matches. In replacement text \& and \1 have the +standard meaning. + +Line editor and completion +-+-+-+-+-+-+-+-+-+-+-+-+-+ The completion system now has a style path-completion. Setting this to false inhibits completion of paths before the current path component, @@ -41,23 +59,40 @@ an error when editing the line. The following code can be used to create a bindable editor widget to restore the aborted line: recover-line() { LBUFFER=$ZLE_LINE_ABORTED RBUFFER=; } zle -N recover-line +and then either bind recover-line to a key sequence or use +`M-x recover-line <RET>'. The parameter ZLE_STATE, available in user-defined line editor widgets, gives information on the state of the line editor. Currently this is whether the line editor is in insert or overwrite mode. -There is now a function system for recording and restoring recently -entered directories. See the entry for cdr in the zshcontrib manual page. - -The (D) flag in parameter expansion abbreviates directories in the -substituted value. The (q-) flag does minimal shell quotation of arguments -for maximum human readability of the result. +Miscellaneous options +-+-+-+-+-+-+-+-+-+-+- The new shell option HIST_LEX_WORDS causes history lines read in from a file to be split in the same way as normal shell lines, instead of simply on whitespace. It's an option as although the result is more accurate it can take a long time when the history size is large. +The shell option MONITOR can be set in non-interactive shells, and also in +subshells (as created by surrounding commands with parentheses), turning on +job control for that subshell. The initial behaviour of a subshell is +still to turn job control off, however if the new POSIX_JOBS option is set +MONITOR remains active in subshells. + +The new shell option POSIX_CD, active in emulations of POSIX-based shells, +makes the cd builtin POSIX-compatible. + +The POSIX_JOBS option already referred to has various other +compatibility enchancements. + +The new shell option POSIX_STRINGS makes a null character in $'...' +expansion terminate the string. This is not particularly useful +behaviour but may become a POSIX requirement. + +The new shell option POSIX_TRAPS causes the EXIT trap to behave in the same +way as in other shells, i.e. it is only run when the shell exits. + The new shell option SOURCE_TRACE causes the shell to report files containing shell code that the shell executes directly, i.e. startup files or files run with the `source' or `.' builtins. @@ -65,25 +100,21 @@ or files run with the `source' or `.' builtins. The shell option SUN_KEYBOARD_HACK has been supplemented by a more general mechanism: the KEYBOARD_HACK variable defines the character to be ignored. -The new shell option POSIX_CD, active in emulations of POSIX-based shells, -makes the cd builtin POSIX-compatible. +Add-on modules and function +-+-+-+-+-+-+-+-+-+-+-+-+-+- -The new shell option POSIX_TRAPS causes the EXIT trap to behave in the same -way as in other shells, i.e. it is only run when the shell exits. +The module zsh/system has a new "zsystem" builtin whose subcommands perform +system level tasks. Currently "zsystem flock" performs advisory file +locking (for aficionados, this uses the fcntl() system call so works over +the network on Linux). This is a particularly convenient way of locking +files for the length of a subshell. "zsystem supports flock" provides a +test for this feature. -The shell option MONITOR can be set in non-interactive shells, and also in -subshells (as created by surrounding commands with parentheses), turning on -job control for that subshell. The initial behaviour of a subshell is -still to turn job control off, however if the new POSIX_JOBS option is set -MONITOR remains active in subshells. +There is now a function system for recording and restoring recently +entered directories in a persistent fashion, with support in completion +and (if explicitly installed) dynamic directory expansion. See the +entry for cdr in the zshcontrib manual page. -Regular expression matches now use the same variables for storing matched -components as shell pattern matching. The function system now provides the -function regexp-replace for replacing text using regular expressions. The -zle widget functions replace-string, replace-string-again, if defined with -regex in the name (e.g. "zle -N replace-regexp replace-string"), perform -regular expression matches. In replacement text \& and \1 have the -standard meaning. Changes between versions 4.3.9 and 4.3.10 ----------------------------------------- |