Feature Request: Add option to print the enviroment with the command

[elichai]

something like Cmd::set_verbose(self, bool) that if set will print to stderr $ ENV1=KEY1 ENV2=KEY2 ... CMD ARGS this will help debug errors when setting enviroment variables

[matklad]

Makes sense to me! We already have Cmd::quiet / set_quiet which controls echoing of the command itself. One design question is the specific naming of methods. I think fn quiet is already wrong, as it is very unclear what that does. So perhaps we can deprecate that and come up with some clearer API

[elichai]

@matklad Maybe something like echo_command() and echo_env()?