pflag accepts -qn as -q -n and -vvq as -v -v -q, but PeekGlobals only
read clusters made of v, so the generated main's pre-boot diary setup,
the error block of Execute and passthrough commands missed -q, -n and
-v when they were clustered. Read the cluster letter by letter and stop
at the first letter that is not a global shorthand.
- Global options -v/-vv/-vvv, -q, --ansi/--no-ansi, -n and --env on every
command; PeekGlobals reads them before config loads, OnGlobals hooks
re-apply them after parsing (diary.ApplyGlobals in the generated main)
- Bare binary, --help and list print the Artisan list with the version
header from BuildVersion and namespace blocks
- Execute runs the root through fang (no version, man page or completions)
and returns 0, 1 or 2; Fail renders errors before the root exists
- NewRoot rejects duplicate command names (ErrDuplicateCommand) and flags
that reuse a global option (ErrReservedFlag)
- Generated main and summer use PeekGlobals, compass.Open with --env,
diary.FromGlobals and bonfire.Execute; docs checker knows the globals
