From 6b1bcb401a25727bea39066cfe7d16fe3536e981 Mon Sep 17 00:00:00 2001
From: Mu Qiao <qiaomuf@gentoo.org>
Date: Fri, 2 Mar 2012 16:25:49 +0800
Subject: Walker: allow empty case command

---
 bashast/libbashWalker.g       |  3 ++-
 scripts/compound_command.bash | 12 ++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/bashast/libbashWalker.g b/bashast/libbashWalker.g
index f57f403..95f8a90 100644
--- a/bashast/libbashWalker.g
+++ b/bashast/libbashWalker.g
@@ -1068,7 +1068,8 @@ case_clause[const std::string& target] returns[bool matched]
 		else
 		{
 			$matched = false;
-			seek_to_next_tree(ctx);
+			if(LA(1) == CASE_COMMAND)
+				seek_to_next_tree(ctx);
 		}
 	})
 	|CASE_PATTERN;
diff --git a/scripts/compound_command.bash b/scripts/compound_command.bash
index 0d3321e..36161fe 100644
--- a/scripts/compound_command.bash
+++ b/scripts/compound_command.bash
@@ -361,3 +361,15 @@ for ((i = "${#python_versions[@]}"; i >= 0; i--))
 do
     echo $i
 done
+EAPI="4"
+case ${EAPI} in
+    0|1)
+        echo "Unsupported EAPI=${EAPI} (too old) for ruby-ng.eclass" ;;
+    2|3);;
+    4)
+        # S is no longer automatically assigned when it doesn't exist.
+        S="${WORKDIR}"
+        ;;  
+    *)  
+        echo "Unknown EAPI=${EAPI} for ruby-ng.eclass"
+esac
-- 
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