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55 lines
2.7 KiB
Text
55 lines
2.7 KiB
Text
Version 4.3.5 contains both bugfixes and improvements. Further progress
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has been made in support for multibyte character set and in most cases
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this is thought to be stable although a few glitches remain.
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Visible changes in the shell and its modules since 4.3.4 include the
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following:
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A new module zsh/curses provides the builtin zcurses for access
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to the curses screen manipulation package; see the entry in the zsh/modules
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manual. Configuration of terminal libraries is now easier with the
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--with-term-lib option to configure.
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The module system has been extended to add "features" which can
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be manipulated with zmodload -F. This allows a more convenient and
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powerful way of manipulating builtins, parameters, mathematical functions
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and test operators provided by modules. For example,
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zmodload -aF zsh/datetime b:strftime p:EPOCHSECONDS
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specifies that builtin strftime and parameter EPOCHSECONDS are to be
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autoloaded from the module zsh/datetime, but that no other features
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from zsh/datetime will be enabled without being specifically mentioned.
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In addition, the zsh/stat module can now be loaded with
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zmodload -F zsh/stat b:zstat
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to make the builtin available under the name "zstat". The alternative
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name "stat" is still available but commonly clashes with the name of an
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external binary. The completion system has been modified to use only
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"zstat".
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"zmodload -i" behaviour is now the default, so "zmodload <module>"
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no longer fails if <module> is already loaded.
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The globbing flag (#cN,M) is an extension of the extended globbing
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# and ## pattern operators, forcing the previous expression to match
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at least N and no more than M times, similar to {N,M} in regular
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expressions.
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In zsh native mode (NO_KSH_ARRAYS), retrieving array subscript zero returns
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the empty string or attempting to set subscript zero with arrays is now an
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error. This was previously a source of difficult to find problems.
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The old behaviour can be obtained with the KSH_ZERO_SUBSCRIPT option
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for compatibility, however there is no reason to use this in new
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shell code and KSH_ARRAYS should be preferred for compatibility with
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other shells.
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Previously, splitting quoted parameters using "${(s.:.)param}" removed
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empty fields. This is incompatible with the usual effect of quoting
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parameters. This behaviour has been retained for compatibility,
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but using an explicit "@" flag as in "${(@s.:.)param}" forces
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empty fields to be retained.
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The sched module has a parameter zsh_scheduled_events that makes
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querying scheduled events from a function easier.
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The calendar function system can now use UIDs imported from other calendar
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systems to identify entries for replacing. Handling of recurring events
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is more robust but still limited.
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