ash : fix double-quoted "\z" handling

function                                             old     new   delta
readtoken1                                          2602    2608      +6

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

2 files changed, 48 insertions, 0 deletions

diff --git a/shell/ash_test/ash-quoting/bkslash_case1.right b/shell/ash_test/ash-quoting/bkslash_case1.right
new file mode 100644
index 000000000..1b52491f7
--- /dev/null
+++ b/shell/ash_test/ash-quoting/bkslash_case1.right
@@ -0,0 +1,10 @@
+ok1
+ok2
+ok3
+ok4
+ok5
+Ok:0
+ok6
+ok7
+ok8
+Ok:0
diff --git a/shell/ash_test/ash-quoting/bkslash_case1.tests b/shell/ash_test/ash-quoting/bkslash_case1.tests
new file mode 100755
index 000000000..d0c359927
--- /dev/null
+++ b/shell/ash_test/ash-quoting/bkslash_case1.tests
@@ -0,0 +1,38 @@
+# Case argument is globbed, match patterns are not.
+# This caught some bugs in the past.
+
+case z in
+\z  ) echo ok1 ;;
+*   ) echo BUG ;;
+esac
+case \z in
+z   ) echo ok2 ;;
+*   ) echo BUG ;;
+esac
+case \z in
+\z  ) echo ok3 ;;
+*   ) echo BUG ;;
+esac
+case z in
+\z  ) echo ok4 ;;
+*   ) echo BUG ;;
+esac
+case \\z in
+\\z ) echo ok5 ;;
+*   ) echo BUG ;;
+esac
+echo Ok:$?
+
+case "\z" in
+"\z"  ) echo ok6 ;;
+*     ) echo BUG ;;
+esac
+case "\\z" in
+"\\z" ) echo ok7 ;;
+*     ) echo BUG ;;
+esac
+case "\\\z" in
+"\\\z") echo ok8 ;;
+*     ) echo BUG ;;
+esac
+echo Ok:$?