K 10
svn:author
V 6
jilles
K 8
svn:date
V 27
2010-10-28T22:34:49.331261Z
K 7
svn:log
V 386
sh: Only accept a '}' inside ${v+-=?...} if double-quote state matches.
If double-quote state does not match, treat the '}' literally.

This ensures double-quote state remains the same before and after a
${v+-=?...} which helps with expand.c.

It makes things like
  ${foo+"\${bar}"}
which I have seen in the wild work as expected.

Exp-run done by:	pav (with some other sh(1) changes)

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