On 03/08/2021 09:03, Zach Riggle wrote:
>
>> Invoking manually doesn't work either, so I think there's something
>> broken about the default install of Zsh on macOS (though I *also* have
>> it installed via homebrew).
>>
>>      $ info --index-search=read zsh
>>      no index entries found for `read'
>>
I had this problem on Linux Mint but not on Cygwin so assumed I'd broken 
something

but actually I needed

sudo apt-get install zsh-doc

now following  works
info --index-search=read zsh

zzapper