Hi,

I believe that readline's completion-prefix-display-length is a great
option to have for zle. This option enables the common part of long
completions to be represented by ellipsis, so the options in the
completion list would not be too long in many cases.

An demo is shown here
<http://rebrn.com/re/you-can-make-readline-and-bash-much-more-user-friendly-by-adding-1571082/>

Please CC me when reply.

Hong