- Print the test name and data after the plan line
- Split on the plan line rather than on comments
+ That makes tap-filter more suitable to filter TAP output generated by other
TAP producers.
+ However, the filtered output deletes the plan line and adds a blank line in
its stead. This suits our use-case of interactive test runs.
Fixeszsh-users/zsh-syntax-highlighting#262.
Currently, 'make quiet-test' uses Perl. However, since it is considered a development
tool rather than a user-facing tool, users and downstream packages needn't install Perl.
Furthermore, even this dev-only dependency may be dropped in the future.
The only difference between tests/tap-filter here and the one in the issue is using
a `cat` subshell v. using 'undef $/; <STDIN>'.
