Inconsistent SYNOPSIS brackets: required options shown as optional, opposite of arguments #1389

Given a command with a required option --name and an optional option --times (with a default), the SYNOPSIS section of its help output shows:

hi [--name String] --times int --help

This is backwards: --name is required but shown bracketed (looking optional), while --times is optional but shown bare (looking required). By Unix convention, [ ] should mark the optional element, not the required one. This is also inconsistent with how positional arguments are rendered in the same help output (there, arguments with a default value are correctly shown bracketed as optional). Options and arguments follow opposite, contradictory conventions within the same command's help text.