Chong Yidong 0992bd9c06 Fix and doc-fix for `buffer-local-variables'. ...

* src/buffer.c (Fbuffer_local_variables)
(buffer_lisp_local_variables): Handle unbound vars correctly;
don't let Qunbound leak into Lisp.

* doc/lispref/variables.texi (Creating Buffer-Local): Minor clarification
to buffer-local-variables doc.

Fixes: debbugs:10715

2012-02-07 14:34:52 +08:00

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