Extend closure support.

Avoid an issue in the `getAttributeData` method.
Evaluate the \pred(p) construction.
[auto] Merge from Praspel

    • #7462328 — Extend closure support. (Ivan Enderlin, 2014-05-21)
    • #f047900 — Evaluate the \pred(p) construction. (Ivan Enderlin, 2014-05-21)

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Merge branch 'master' of /var/lib/git/repositories/Library/Praspel