On 6/28/2018 4:03 PM, Eric Cook wrote:
> On 06/28/2018 03:40 PM, Scott Frazer (scfrazer) wrote:
>> I am trying to write a completion function for a command that takes two items separated by a dash, and the second item depends on the first. For example, suppose possible full completions were:
>>
>> foo-bar
>> foo-baz
>> abc-def
>> abc-xyz
>>
>> Ideally, the completion function would first present options "foo" and "abc", then after the user chooses one it inserts the "-', and when you hit tab again it presents either "bar" and "baz" or "def" and "xyz".
>>
>> For this simple example I could just show all four, but in real life there are many first items and many second items and the list would be huge.
>>
>> I have written some simple completions before, but this has me stumped. Is there a way to do this?
>>
>> Thanks,
>> Scott
>>
>
>
> _foo() {
> local -a ary
> ary=( foo-bar foo-baz abc-def abc-xyz )
> _arguments '1:description:_multi_parts -- - ary'
> }
> compdef _foo foo
>
Thanks! This was tantalizingly close, but _multi_parts wasn't handling
completion of the first part the way I prefer. For example, if possible
completions were:
foo-abc
foobar-xyz
and I type 'foo<TAB>', I like completion to give me the two options
'foo' and 'foobar', but _multi_parts would see a 'complete' match and
insert 'foo-' without asking about the ambiguity.
I did finally get things they way I wanted. If anyone comes upon this
thread in the future, here is basically what I ended up with:
_foo() {
local curcontext="$curcontext" state
_arguments -C '*: :->foo' && return 0
case "$state" in
foo)
if compset -P '*[-]'; then
local first=${IPREFIX%-}
local second=<do something using $first to get values>
_values "second" $second
else
local first=<do something here to get values>
_values -s - "first" $first
fi
;;
esac
}
_foo "$@"