Unhelpful error message when misplacing non-option arguments

[dingp]

Got non-helpful error message when putting a non-option argument --force after other option arguments like the following:

[bash]# spack dev init -b spackdev-larsoft --default-branch=MVP1a --dag-file $PWD/spack_glue/MVP/templates/larsoft-dag.txt -v larsim --force
==> Calculating package information
==> Error: Unexpected token```