K 10
svn:author
V 6
jilles
K 8
svn:date
V 27
2010-04-11T12:24:47.653720Z
K 7
svn:log
V 309
sh: Partially revert r206146, allowing double-quotes in arithmetic.

These do pretty much nothing (except that parentheses are ignored), but
people seem to use them and allowing them does not hurt much.

Single-quotes seem not to be used and cause silently different behaviour
with ksh93 character constants.

END