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Diffstat (limited to 'Etc')
| -rw-r--r-- | Etc/NEWS | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/Etc/NEWS b/Etc/NEWS index e4bafc08d..1d175c417 100644 --- a/Etc/NEWS +++ b/Etc/NEWS @@ -1,6 +1,252 @@ ------------------------------------- CHANGES FROM PREVIOUS VERSIONS OF ZSH ------------------------------------- + +New features in zsh version 3.1.7 +--------------------------------- +Further enhancements to new completion system: + - Comprehensive context-sensitive configuration vai `styles', which + can be set by the menu-driven front end in compinstall. + - General mechanism for setting patterns to be ignored in a completion; + overriding of patterns to be matched for functions + - New completers: _prefix to complete word before cursor, _ignored + to complete using words so far ignored (like $fignore but more + powerful), _history to complete words from shell history + - Multiple use of completers with different options, similalry splitting + of different types of completion (`tags') so they are considered with + different styles + - Many more supplied completions for standard commands which work out of + the box, and better handling of command line options/arguments which + behave in the usual way + - $fpath now set up to use installed functions by default; functions + can be loaded just by `autoload -U compinit; compinit' + - Much improved handling of nested quoting + - New LIST_PACKED and LIST_ROWS_FIRST completion options and corresponding + styles + - compctl library separated out (frozen but still supported) + - User-friendly introduction available at zsh website + http://sunsite.auc.dk/zsh/ + +Additions to complist listing library (coloured completion and menu +selection): + - Listings can be shown page by page (are by default for new completion) + - Menu selection allows full up and down scrolling of long lists + +Other editing features: + - new parameters $PENDING, $MARK, $BUFFERLINES + - Easy display of a prompt from within an editing widget + +Code parsing, storing and execution: + - Completely new system of storing code internally, greatly optimised + - Much less memory for shell functions etc. + - Can compile shell functions to .zwc `wordcode' functions for fast + loading + - Can create `digest' files of entire directories in .zwc format + +Parameters: + - Floating point support added, similar to ksh93, `typeset -F' and + `typeset -E' declare floating point variables; usual C/Fortran-like + rules for integer/float conversion + - Mathematical library zsh/mathfunc contains all the standard mathematical + functions for use in arithmetical expressions + - Improved parsing of arithmetical expressions and better error messages + - Special parameters can be made local + - `typeset -h' hides specialness of parameters, either as parameter + attribute or when declaring new local variable + - Local parameters can now be exported as in other shells; new option + GLOBAL_EXPORTS on by default provides old behaviour that `typeset -x' + referred to global parameters. + - zsh/parameter module enhanced: now needed for new completion; parameters + provided have `-h' flag set so that they are hidden by `typeset', so + that existing functions don't need to be changed + - Quotes can be stripped from parameter values with ${(Q)...}, providing + reverse of ${(q...)...} facility + +Globbing and pattern matching: + - Pattern matching rewritten for efficiency + - Supports `backreferences', i.e. extracting parenthesised chunks of + matches, e.g. + [[ $foo = (#b)(*/)[^/]* ]] + stores the part of $foo up to the last / in $match[1] and the indexes of + the match in $mbegin[1], $mend[1]. (#m) is also availabel to set $MATCH + to the entire match and corresponding $MBEGIN, $MEND: useful in + parameter substitutions like ${.../.../...}. + - (#s) and (#e) match start and end of pattern like ^ and $ in regular + expression, useful in complex expressions such as ((#s)|/)dirname((#e)|/) + and in parameter expressions. + + - Depth-first/last listing of recursive glob lists + +Functions etc.: + - `autoload -X' inside a function body instructs the shell to + bootstrap the function at that point + - `autoload +X fn' says load the function fn but don't execute it + - Prompt `themes' make customization of prompts easier + +Modules: + - New hierarchical naming scheme for modules; supplied modules go into + zsh subdirectory, so zle becomes zsh/zle etc.; aliases supplied for + compatibility for existing code, but the new format should be used in + future. + - zmodload is more consistent between dynamicall and statically linked + shells + - zsh/zftp and its function suite support multiple sessions (zfsession + command); zftransfer allows transfer of files between two ftp sessions + with no local file; use styles for e.g. progress style; IPv6 supported; + recursive put `zfput -r' for uploads + - zsh/zpty module creates pseudoterminal and allows builtin `expect'-like + behaviour + +Other: + - Test suite, not yet complete (`make test') + - use of Linux task limits + - Many fixes including output redirection with `setopt xtrace' and + other redirection fixes; NIS+ problem. + - Better null-command behaviour in sh and csh emulation + - Internal memory usage optimisations + +New features in zsh version 3.1.6 (beta version) +------------------------------------------------ +Note also the changes for 3.0.6, which include changes between 3.1.5. and +3.1.6. + +New completion system via shell functions; massive degree of +programmability and configurability: + - ready-made function suite to use, see zshcompsys(1) + - approximate completion and spelling correction via completion + - control over matching for case-independence, partial word completion, etc. + - menu selection: choose a completion by moving the cursor + - coloured completion lists + - completion of filenames in quotes is now more reliable; splitting + quoted strings into command arguments is also possible. + +Other editing changes: + - enhancements to function/editing interface: new parameters, numeric + arguments, string argument passing, reading keys from widgets. + - the old history-search-{back,for}ward behaviour and bindings have + returned (up to minor details). + - BASH_AUTO_LIST option to show completion list only on second key press. + - the ZBEEP parameter gives a string to output instead of beeping, + allowing you to have a visual bell. + +History changes: new options HIST_NO_FUNCTIONS, HIST_EXPIRE_DUPS_FIRST, +HIST_FIND_NO_DUPS, HIST_IGNORE_ALL_DUPS, INC_APPEND_HISTORY, +HIST_SAVE_NO_DUPS, SHARE_HISTORY, allow better control of when history is +read and written and how duplicates are handled. New format for history +saves. + +Associative arrays plus enhanced parameter substitutions to retrieve keys +and values. + +Globbing changes: + - Case-insensitive and approximate globbing. + - Ordering and indexing of globbing matches, e.g. *(om[1]) picks + most recently modified file. + - General file mode qualifier with chmod(1)-like syntax, e.g. *(f:u+wx:) + +New loadable modules: + - zftp, plus associated function suite, for turning your zsh session + into an FTP session too + - parameter, for examining and altering shell hash tables via an + associative array interface. + - mapfile, for reading and writing external files via an associative + array interface. + +Debugging and prompt enhancements: + - $PS4 can contain %i for $LINENO as well as %N for script or function + names (default PS4 changed), also %_ for current shell structure + executing; + - Prompt truncation %<...< is now more flexible: it applies to a + whole section of the prompt, not just one escape. You need to put + %<< after the truncated escape to get the old behaviour. + - %20(l.yes.no) in prompts prints yes if at least 20 characters have + been output, else no (e.g. for outputting extra newlines). + +Parameter and expansion changes + - `typeset -t MYPATH mypath' creates tied path/PATH-like variables + - `typeset -g' allows operations on parameters without making them local + - New expansions + - ${(t)param} prints type information for $param + - ${(P)param} treats value of $param as the name of a param to + substitute + - ${foo:q} can quote replaced parameter text from expansion + - ${foo/old/new} substitution, like bash; also (S) flag for shortest + match + - $foo[(b.2.i)bar] starts searching $foo for bar starting at 2nd match + +Builtin and function changes + - stat module: `stat -H hash foo' gives you e.g. $hash[mtime] + - `autoload -U' autoloads functions without alias expansion. + +Other new options: + - LOCAL_TRAPS allows signal traps to be local to functions (as in ksh). + - NO_RCS can now be turned on at any point in initialization files. + - NO_GLOBAL_RCS can force /etc/z* files after /etc/zshenv to be skipped. + (Please don't use this as an excuse to stuff more into /etc/zshenv!) + - Existing MAGIC_EQUAL_SUBST option is more useful; any argument containing + ...=~...:~... will perform filename expansion on the ~ (previously, + the string before `=' had to look like a parameter name). + +Configuration changes: + - Generation of signal names should be more reliable + - Customizable installation of shell functions from distribution. + +New features in zsh version 3.0.6 +--------------------------------- + +Most of these changes are designed to improve compatibility with zsh +version 3.1.6, the latest development release. However, this release also +fixes all known Year 2000 (Y2K) bugs in zsh 3.0. + +History changes: + - whitespace between words is ignored in history searches. + - new option HIST_REDUCE_BLANKS removes extra whitespace in the stored + history. + - support for reading (but not writing) version 3.1.6 history files. + +Globbing changes: + - the a, c, and m glob qualifiers can now test time in seconds. + - globbing of number ranges behaves more like character ranges in that + it can match a prefix of a number, e.g. `<1-5>*' matches 1, 2, 3, 4, + 5, 17, 23skiddoo, 5986, etc., but not 6, 7, 8ball, 911, etc. + +Parameter and expansion changes: + - expansion of ~ and other globbing flags via ${~param} do not depend + upon EXTENDED_GLOB (bug fix). + - nested parameter substitutions require braces (this was always the + documented behavior, but previous parsers didn't enforce it). + - quote only nested expansion, e.g. ${(f)"$(<file)"} reads complete + `file', then splits lines into array. + +Builtin and function changes: + - `typeset -U' works on the colon-array version of linked parameters. + - `typeset +f' and `functions +' output the names (only) of functions. + - `emulate -L' has the effect of `setopt localoptions'. + - in fn1() { local foo; unset foo; foo=bar; }, foo is restored at local + level, whereas if the `unset foo' appeared in a nested function it + would have been restored at global level, which was presumably wrong. + - `foo=bar >&file' is a redirection, not a NULLCMD. + - any single complex command, such as `case ... esac', parses as if + semicolon-terminated (bug fix). + - the shell function `preexec', if defined, is run after parsing each + command line but before executing the command. + +Other changes: + - the option PRINT_EIGHT_BIT causes zsh to emit raw bytes in prompts + and completion lists even if the system ctype(3) package says that + those bytes are not "printable." + +Debugging enhancements: + - LINENO is now very much more useful in scripts and functions and is + reported correctly in most error messages. + - ERREXIT behavior is now consistent with newer Bourne-like shells, + e.g. with respect to `if' tests that fail. + +Configuration changes: + - Large file and 64-bit integers on 32-bit machines supported where + provided by OS. + - a few more system features, such as getpwnam/getpwuid, are tested for. + New features in zsh version 3.1 (beta version) ---------------------------------------------- |