opam list does not show any visual signs of lines being truncated

[kit-ty-kate]

To show a concise over-exaggerated example:

$ COLUMNS=10 opam list --columns description | head
# Packages matching: installed
# Descript
A package 
A library 
afl-fuzz n
Alcotest e
Angstrom i
ARP is an 
asn1-combi
Astring ex

In this example there is no way to tell if the a line finished or if it was truncated due to the column size limit.
It could be useful to have a colored character showing truncation. It could also be useful to prevent hidden columns by setting a predefined percentage of COLUMNS that each columns should have. For example if you have opam list --columns description,name,version it would be nice to make say description take say 50% of COLUMNS, name 30% and version 20% so that description doesn't take the whole screen and each column is truncated somewhat equally.