1 files changed, 31 insertions, 0 deletions
diff --git a/tests/appendop2.sub b/tests/appendop2.sub
new file mode 100644
index 0000000..e497beb
--- /dev/null
+++ b/tests/appendop2.sub
@@ -0,0 +1,31 @@
+#   This program is free software: you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation, either version 3 of the License, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+POSIXLY_CORRECT=1
+x=2
+x+=5 eval printf '"$x "'
+echo "$x"
+
+unset x
+typeset -i x=2
+x+=5 eval printf '"$x "'
+echo "$x"
+
+a=1
+a+=4
+echo $a
+
+# idiotically, ksh93 makes these two cases differ (?)
+a+=5 printenv a
+a+=5 eval printf '"$a "'
+echo $a