Re: [PATCH v2] bisect--helper: avoid segfault with bad syntax in `start --term-*`

>
> 06f5608c14 (bisect--helper: `bisect_start` shell function partially in C,
> 2019-01-02) adds a lax parser for `git bisect start` which could result
> in a segfault under a bad syntax call for start with custom terms.
>
> Detect if there are enough arguments left in the command line to use for
> --term-{old,good,new,bad} and abort with the same syntax error the original
> implementation will show if not.
>
> While at it, remove an unnecessary (and incomplete) check for unknown
> arguments and make sure to add a test to avoid regressions.