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29312, users/16032: add "zparseopts -M"

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This commit is contained in:
Bart Schaefer 2011-05-18 01:50:59 +00:00
parent 6699851bcb
commit f32c60347f
1 changed files with 20 additions and 1 deletions
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21
Doc/Zsh/mod_zutil.yo
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@ -178,7 +178,7 @@ item(tt(zregexparse))(
This implements some internals of the tt(_regex_arguments) function. This implements some internals of the tt(_regex_arguments) function.
) )
findex(zparseopts) findex(zparseopts)
item(tt(zparseopts) [ tt(-D) ] [ tt(-K) ] [ tt(-E) ] [ tt(-a) var(array) ] [ tt(-A) var(assoc) ] var(specs))( item(tt(zparseopts) [ tt(-D) ] [ tt(-K) ] [ tt(-M) ] [ tt(-E) ] [ tt(-a) var(array) ] [ tt(-A) var(assoc) ] var(specs))(
This builtin simplifies the parsing of options in positional parameters, This builtin simplifies the parsing of options in positional parameters,
i.e. the set of arguments given by tt($*). Each var(spec) describes one i.e. the set of arguments given by tt($*). Each var(spec) describes one
option and must be of the form `var(opt)[tt(=)var(array)]'. If an option option and must be of the form `var(opt)[tt(=)var(array)]'. If an option
@ -255,6 +255,15 @@ options and with the `tt(=)var(array)' forms are kept unchanged when none
of the var(specs) for them is used. This allows assignment of default of the var(specs) for them is used. This allows assignment of default
values to them before calling tt(zparseopts). values to them before calling tt(zparseopts).
) )
item(tt(-M))(
This changes the assignment rules to implement a map among equivalent
option names. If any var(spec) uses the `tt(=)var(array)' form, the
string var(array) is interpreted as the name of another var(spec),
which is used to choose where to store the values. If no other var(spec)
is found, the values are stored as usual. This changes only the way the
values are stored, not the way tt($*) is parsed, so results may be
unpredicable if the `var(name)tt(+)' specifier is used inconsistently.
)
item(tt(-E))( item(tt(-E))(
This changes the parsing rules to em(not) stop at the first string This changes the parsing rules to em(not) stop at the first string
that isn't described by one of the var(spec)s. It can be used to test that isn't described by one of the var(spec)s. It can be used to test
@ -288,5 +297,15 @@ set -- -a x -c z arg1 arg2)
I.e., the option tt(-b) and its arguments are taken from the I.e., the option tt(-b) and its arguments are taken from the
positional parameters and put into the array tt(bar). positional parameters and put into the array tt(bar).
The tt(-M) option can be used like this:
example(set -- -a -bx -c y -cz baz -cend
zparseopts -A bar -M a=foo b+: c:=b)
to have the effect of
example(foo=(-a)
bar=(-a '' -b xyz))
) )
enditem() enditem()