julia

e4398360 - add `rtruncate`, `ltruncate`, `ctruncate` for truncating strings in terms of `textwidth` (#55351)

add `rtruncate`, `ltruncate`, `ctruncate` for truncating strings in terms of `textwidth` (#55351) Co-authored-by: Timothy <git@tecosaur.net> Co-authored-by: Steven G. Johnson <2913679+stevengj@users.noreply.github.com>