Correct some bugs about lexical scope variables.

Author Pascal J. Bourguignon <pjb@informatimago.com>
Author date 2013-06-17 20:54:13
Author local date 2013-06-17 22:54:13 +0200
Committer Pascal J. Bourguignon <pjb@informatimago.com>
Committer date 2013-06-17 20:54:13
Committer local date 2013-06-17 22:54:13 +0200
Commit 3200c75d048aa3ac0dfb348138893ab434956a0f
Tree 11ceeb0c758a79cb248476bd86b54ed782e86557
Parent 6232f24878fbfbf5455792f331aa4182e1192f30
Correct some bugs about lexical scope variables.
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