merged branch nikic/nestedDefinedTestWithStrictVars (PR #359)

Commits
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f2a1c2b Refactor and add additional default filter tests
e760483 Make `a.b is defined` not throw an exception if a is not defined (in strict mode)

Discussion
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Make `a.b is defined` not throw an exception if a is not defined (in strict mode)

This commit does two things: Firstly (that's the main part) it makes `a.b is defined` not throw an error in strict mode if `a` is undefined (applies for `a.b.c` aso too) [fixes #337]. Additionally it allows `a.b|default` just like it is allowed to do `a|default`.

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by fabpot at 2011/06/09 22:21:11 -0700

This is quite a big change. Can you add some tests?

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by nikic at 2011/06/10 08:19:49 -0700

I added some more tests for the default filter in the fixtures. But I wasn't sure how I should test the default test's behavior in strict mode. If you could point me in the right direction here I would add those tests, too ;)