From f8ddbe1ccce9eceaaac28b4b1aa71631fcc56db6 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 25 Jul 2016 03:56:00 +0200
Subject: ash: fix handling of ${VAR: -2}

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 shell/ash_test/ash-vars/var_bash1a.right |  6 ++++++
 shell/ash_test/ash-vars/var_bash1a.tests | 11 +++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 shell/ash_test/ash-vars/var_bash1a.right
 create mode 100755 shell/ash_test/ash-vars/var_bash1a.tests

(limited to 'shell/ash_test/ash-vars')

diff --git a/shell/ash_test/ash-vars/var_bash1a.right b/shell/ash_test/ash-vars/var_bash1a.right
new file mode 100644
index 000000000..1965b5c6c
--- /dev/null
+++ b/shell/ash_test/ash-vars/var_bash1a.right
@@ -0,0 +1,6 @@
+parameter     'abcdef'
+varoffset2    'cdef'
+varoffset-2   'ef'
+literal '2'   'cdef'
+literal '-2'  'abcdef'
+literal ' -2' 'ef'
diff --git a/shell/ash_test/ash-vars/var_bash1a.tests b/shell/ash_test/ash-vars/var_bash1a.tests
new file mode 100755
index 000000000..551dd9acc
--- /dev/null
+++ b/shell/ash_test/ash-vars/var_bash1a.tests
@@ -0,0 +1,11 @@
+parameter=abcdef
+offset=2
+noffset=-2
+echo "parameter     '${parameter}'"
+echo "varoffset2    '${parameter:${offset}}'"
+echo "varoffset-2   '${parameter:${noffset}}'"
+echo "literal '2'   '${parameter:2}'"
+# This is not inrpreted as ${VAR:POS{:LEN}},
+# but as ${VAR:=WORD} - if VAR is unset or null, substitute WORD
+echo "literal '-2'  '${parameter:-2}'"
+echo "literal ' -2' '${parameter: -2}'"
-- 
cgit v1.2.3