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authorDenys Vlasenko2016-07-25 03:56:00 +0200
committerDenys Vlasenko2016-07-25 03:56:00 +0200
commitf8ddbe1ccce9eceaaac28b4b1aa71631fcc56db6 (patch)
tree0782f9ae0ab8bfb74ad8c3fca455f2dcd4de6b33 /shell/ash_test
parent0fb0045aa9261be1dda49dfdfb95cbc585402a8b (diff)
downloadbusybox-f8ddbe1ccce9eceaaac28b4b1aa71631fcc56db6.zip
busybox-f8ddbe1ccce9eceaaac28b4b1aa71631fcc56db6.tar.gz
ash: fix handling of ${VAR: -2}
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell/ash_test')
-rw-r--r--shell/ash_test/ash-vars/var_bash1a.right6
-rwxr-xr-xshell/ash_test/ash-vars/var_bash1a.tests11
2 files changed, 17 insertions, 0 deletions
diff --git a/shell/ash_test/ash-vars/var_bash1a.right b/shell/ash_test/ash-vars/var_bash1a.right
new file mode 100644
index 0000000..1965b5c
--- /dev/null
+++ b/shell/ash_test/ash-vars/var_bash1a.right
@@ -0,0 +1,6 @@
+parameter 'abcdef'
+varoffset2 'cdef'
+varoffset-2 'ef'
+literal '2' 'cdef'
+literal '-2' 'abcdef'
+literal ' -2' 'ef'
diff --git a/shell/ash_test/ash-vars/var_bash1a.tests b/shell/ash_test/ash-vars/var_bash1a.tests
new file mode 100755
index 0000000..551dd9a
--- /dev/null
+++ b/shell/ash_test/ash-vars/var_bash1a.tests
@@ -0,0 +1,11 @@
+parameter=abcdef
+offset=2
+noffset=-2
+echo "parameter '${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}'"