Relax the extractFromComment() method.

Returns an empty string instead of throwing exceptions.
Fix \old(e).
[auto] Merge from Praspel

    • #bed337b — Relax the extractFromComment() method. (Ivan Enderlin, 2013-08-21)
    • #02d1947 — Fix \old(e). (Ivan Enderlin, 2013-08-21)

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Merge remote branch 'library-praspel/master'