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51511: More discussion of unsupported ksh features

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This commit is contained in:
Bart Schaefer 2023-03-06 20:08:12 -08:00
parent b17431e6dd
commit 42640b2613
2 changed files with 56 additions and 17 deletions

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ChangeLog
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@ -1,5 +1,7 @@
2023-03-06 Bart Schaefer <schaefer@zsh.org>
* 51512: Doc/Zsh/mod_ksh93.yo: More about unsupported features
* 51511: Doc/Zsh/expn.yo, Doc/Zsh/params.yo: Document namespaces
* 51510: Src/builtin.c, Src/params.c, Src/utils.c, Src/zsh.h,

71
Doc/Zsh/mod_ksh93.yo
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@ -118,23 +118,6 @@ The following features of ksh93 are not currently supported but may be
available in a future release.
startitem()
item(var(pathdir)tt(/.paths))(
Each directory var(pathdir) in the tt(PATH) parameter may contain a
text file `tt(.paths)' which may define additional directories to
be searched for function definitions (tt(FPATH)), external executables
(tt(PATH)), and plugin files (similar to tt(MODULE_PATH)).
em(THIS FEATURE IS UNLIKELY EVER TO BE IMPLEMENTED.)
)
item(tt(builtin -f )var(file))(
Installs a new shell builtin command dynamically linked from var(file),
where var(file) is found by a path search and the base name of the file
is the name of the builtin to be added.
Similar to `tt(zmodload -F zsh/)var(file)tt( +b:)var(file)'.
em(THIS FEATURE IS UNLIKELY EVER TO BE IMPLEMENTED.)
)
item(tt(namespace )var(ident)tt( { )var(list)tt( }))(
This reserved word executes the current shell compound command
tt({ )var(list)tt( }), with the special behavior that all functions
@ -208,4 +191,58 @@ of `tt($LPAR())var(list)tt(RPAR())' but without forking.
em(THIS FEATURE IS NOT YET IMPLEMENTED.)
)
item(tt(typeset -C )var(name)[tt(=)var(values)tt( ...)])(
Creates a em(compound variable).
em(THIS FEATURE IS NOT YET IMPLEMENTED, and the syntax of var(values)
is unlikely to be fully ksh compatible.)
)
enditem()
subsect(Other Differences)
The following features of ksh93 are not currently supported and there are
no plans to implement them.
startitem()
item(var(pathdir)tt(/.paths))(
Each directory var(pathdir) in the tt(PATH) parameter may contain a
text file `tt(.paths)' which may define additional directories to
be searched for function definitions (tt(FPATH)), external executables
(tt(PATH)), and plugin files (similar to tt(MODULE_PATH)).
em(THIS FEATURE IS UNLIKELY EVER TO BE IMPLEMENTED.)
)
item(tt(builtin -f )var(file))(
Installs a new shell builtin command dynamically linked from var(file),
where var(file) is found by a path search and the base name of the file
is the name of the builtin to be added.
Similar to `tt(zmodload -F zsh/)var(file)tt( +b:)var(file)'.
em(THIS FEATURE IS UNLIKELY EVER TO BE IMPLEMENTED.)
)
item(tt(typeset -H )var(name)[tt(=)var(value)])(
Used for em(host-name file mapping) on some operating systems.
em(THIS FEATURE IS UNLIKELY EVER TO BE IMPLEMENTED.)
)
item(tt(typeset ){tt(PLUS()|-)}tt(M )var(mapname)tt( )var(name)[tt(=)var(value)])(
Declares a character translation var(mapname) for values assigned to var(name).
)
xitem(tt(typeset -S))
xitem(tt(typeset -T ) [tt(-f)] [ var(tname)tt(=LPAR())var(values)tt(RPAR()) ])
item(tt(typeset -h )var(str))(
Used to define em(typed variables) and properties of their em(sub-variables).
The tt(-T) and tt(-h) options conflict with existing zsh usage.
)
item(tt(typeset -X )var(name)[tt(=)var(value)])(
Declares a floating-point variable displayed in hexadecimal format.
)
item(tt(typeset -b )var(name)[tt(=)var(value)])(
Declares a parameter stored in em(base64) format.
)
item(tt(typeset -m )var(newname)tt(=)var(oldname))(
em(Moves) var(oldname) to var(newname). Conflicts with native zsh usage.
)
enditem()