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Diffstat (limited to 'README')
| -rw-r--r-- | README | 78 |
1 files changed, 6 insertions, 72 deletions
diff --git a/README b/README index 82f924cbd..894f78e35 100644 --- a/README +++ b/README @@ -24,78 +24,12 @@ details, see the documentation. Possible incompatibilities --------------------------- -Currently the only known incompatibilities between 4.2.0 and later -versions are minor: - - -Since 4.2.1: - -The "test" and "[" builtins now behave more like relevant Unix standards -suggest they should. Previously they were a simple front-end to the same -tests used by zsh's "[[" syntax. (The documentation was previously cagey -about what "test" and "[" actually did.) "[[" has always been the -recommended way of implementing tests within zsh. - -In recent versions of zsh, typing the end-of-file (EOF) character -(typically ^D, although this can be altered with the "stty" command) -repeatedly in the line editor printed a warning message, but never exited the -shell. This was a departure from the traditional behaviour of zsh and -other shells where the shell would exit after 10 EOFs. The traditional -behaviour has been restored. Also, binding a user-defined editor command -to the EOF character now suppresses the EOF behaviour inside the line -editor; it is possible to emulate it if desired. - - -From 4.2.0 to 4.2.1: - -IPv6 addresses must be specified in square brackets in the zftp module and -the function system built on top of the zftp module. - -Special traps for pseudosignals ZERR, DEBUG and EXIT are no longer executed -inside other traps. Users may well have assumed this was the case anyway -since the behaviour was not explicity documented. See the NEWS file for -more detail. - -By default, a maximum function depth of 4096 is now compiled into the -shell. This may be altered during configuration; see `Function depth' in -INSTALL. - - -Some particular differences you may notice between the 4.0 and 4.2 series -of releases: - -The bash-compatibility zle functions described in the zshcontrib manual -page have been removed as a more configurable set of editing widgets for -dealing with words have been added. The following code in .zshrc will set -up for bash-style word handling: - autoload -U select-word-style - select-word-style bash - -The `=prog' facility for expanding command paths (provided the EQUALS -option is enabled, as it is by default) no longer expands aliases. It was -felt this feature was underused and confusing. - -In 4.0, a literal `/' was quoted in the `src' text of a substitution of the -form `${foo/src/rep}' or ${foo//src/rep} with two backslashes. This was -documented, but inconsistent with normal quoting conventions and poorly -implemented. The `/' now requires only one backslash to quote it whether -or not the expression occurs in double quotes. For example: - % foo=word/bird - % print ${foo/\//-} "${foo/\//+}" - word-bird word+bird -Note also the following workaround which is valid in all versions of the -shell that support this syntax: - % slash=/ - % foo=word/bird - % print ${foo/$slash/-} "${foo/$slash/+}" - -In 4.0, the -M option to bindkey used the first non-option argument to -specify the keymap, whereas it now uses an argument to the option. Hence: - bindkey -M -R keymap a-z self-insert -needs to be rewritten as - bindkey -M keymap -R a-z self-insert -The following form works in both versions: - bindkey -R -M keymap a-z self-insert +Since 4.2: + +The "unset" builtin now does not regard the unsetting of non-existent +variables as an error, so can still return status 0 (depending on the +handling of other arguments). This appears to be the standard shell +behaviour. Documentation ------------- |