K 10
svn:author
V 6
jilles
K 8
svn:date
V 27
2012-04-07T20:52:21.597436Z
K 7
svn:log
V 232
sh: Allow variables starting with underscores in arithmetic.

This is a direct commit because I do not want to merge the totally rewritten
arithmetic expression code from 9.x where this already works.

Example:
  _x=1; _x=$((_x+1))

END