From 73e7a6164730051cca2555ed70b0c34935049514 Mon Sep 17 00:00:00 2001
From: Jamis Buck <jamis@37signals.com>
Date: Tue, 8 Apr 2008 08:22:39 -0600
Subject: allow on_error to be a proc, and use throw/catch to support
 programmatic retry/reraise

---
 lib/net/ssh/multi/session.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/net/ssh/multi/session.rb b/lib/net/ssh/multi/session.rb
index 6c31dea..4c6e1a0 100644
--- a/lib/net/ssh/multi/session.rb
+++ b/lib/net/ssh/multi/session.rb
@@ -381,6 +381,14 @@ module Net; module SSH; module Multi
           # do nothing
         when :warn then
           warn("error connecting to #{server}: #{e.class} (#{e.message})")
+        when Proc then
+          go = catch(:go) { on_error.call(server); nil }
+          case go
+          when nil, :ignore then # nothing
+          when :retry then retry
+          when :raise then raise
+          else warn "unknown 'go' command: #{go.inspect}"
+          end
         else
           raise
         end
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