ash

$ go install github.com/avamsi/ash@latest

$ ash --help

ash is a hybrid between getopts and 'sh -c'.

It lets you define CLI flags dynamically and run shell commands rendered from
Go templates. Flags and positional arguments can be referenced within the
command template -- flags by name, and the remaining arguments via {{.args}}.

Usage:
  ash [--name [value [usage]]]... <command> [flags] [args]

Example:
  alias rdiff='ash "-b main branch" "--remote origin" \
  	"git fetch {{.remote}} && git diff {{.remote}}/{{.b}}"'

  $ rdiff -h

  Usage:
    -b string
          branch (default "main")
    -remote string
           (default "origin")

See https://pkg.go.dev/text/template for more information on Go templates.