Perl 6
Smart Linking: Revision 2
Smart Links refer to a special syntax used in the test suite which connect a particular part of a test script with a specific part of the Perl 6 specification.

^^ Smart Links Example

A smart look something like this in a test script:

# L<S29/Math::Trig>

After submitting this to the Subversion repository, after a few minutes a cron script will update a copy of the Specification which references these links. See the "Math::Trig spec"<> for an example.

^^ Benefits of Smart Links

Smart links are especially valuable for a language that is in development. By reviewing this copy of the specification you can find out:

* *Has this feature been tested?* If you don't see references to tests from the spec, there's a possibility the feature is not only untested, but unimplemented!
* *Are there duplicates tests for this feature?* If you see more than one test script linked in one place, it's possible there are duplicate tests, and the tests suite can be simplified.
* *Is there a spec for this feature?* On the other hand, if you find a test _without_ a smart link, it may simply not have one yet, or the feature may be unspec'ed. It was discovered that the basic function "say" did not have a formal definition through this kind of review.

^^ Smart Linking Status

As of September 11th, 2006, 263 test scripts have at least one smart link, but 349 do not.
Help wanted!

^^ How to help with smart linking.

To help with this, you mostly just some motivation to help, and commit access
to the pugs tree. Ask for it on #perl6 if you don't have it.

`perldoc util/` explains the details. Here are practical tips to get started.

1. Review the complete list of files with no smart links:

grep -RL 'L<' t/* | $PAGER

2. Pick a directory that needs work. For example, in builtins/lists, 11 files need updated now.

cd builtins/lists

3. Open these files

$EDITOR `grep -L 'L<' *.t`

4. Add at least one appropriate smart link, possibly using the "online specification"<> as a reference. The nice thing about working in one directory at one time, is that all of the smart links in the directory me be similar.

5. Check your smart links

~/pugs/util/ --check --fast *.t

Hopefully, you'll get some useful debugging feedback if there is a problem.

6. Commit your work!
Usually this is `svk commit` or `svn commit`.

Ask for help on the #perl6 IRC channel if you get stuck.

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