[Lilypond-auto] Issue 4141 in lilypond: Patch: Use Xxx:is_smob instead of Xxx:unsmob when used in boolean contexts

[lilypond]

Status: Started
Owner: address@hidden
Labels: Type-Enhancement Patch-new

New issue 4141 by address@hidden: Patch: Use Xxx:is_smob instead of Xxx:unsmob  
when used in boolean contexts
https://code.google.com/p/lilypond/issues/detail?id=4141

Use Xxx:is_smob instead of Xxx:unsmob when used in boolean contexts

This saves a memory access and comparison and leads to better code
even when unsmob is called afterwards anyway.


Also contains commit:

Define inline members unsmob and is_smob for several derived classes

http://codereview.appspot.com/148350043

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