shell/math: fix the order of variable resolution in binops

function                                             old     new   delta
arith_apply                                         1134    1143      +9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/shell/hush_test/hush-arith/arith-assign-in-varexp.tests b/shell/hush_test/hush-arith/arith-assign-in-varexp.tests
new file mode 100755
index 0000000..920aaa7
--- /dev/null
+++ b/shell/hush_test/hush-arith/arith-assign-in-varexp.tests
@@ -0,0 +1,8 @@
+exec 2>&1
+a='b=10'
+b=3
+# The variables should evaluate left-to-right,
+# thus b is set to 10 _before_ addition
+echo 20:$((a + b))
+echo "a=$a"
+echo "b=$b"