Allow host aliases to be numeric when parsing ssh_config files

A host with a numeric alias would raise an error because it was coerced
into an integer before trying to split it by spaces when trying to
handle multiple hosts.

For example:
  Host 1
  Hostname my.favoritehost.com

3 files changed, 12 insertions, 1 deletions

diff --git a/lib/net/ssh/config.rb b/lib/net/ssh/config.rb
index 1ced224..6eb9c2e 100644
--- a/lib/net/ssh/config.rb
+++ b/lib/net/ssh/config.rb
@@ -88,7 +88,7 @@ module Net; module SSH
           if key == 'host'
             # Support "Host host1 host2 hostN".
             # See http://github.com/net-ssh/net-ssh/issues#issue/6
-            multi_host = value.split(/\s+/)
+            multi_host = value.to_s.split(/\s+/)
             matched_host = multi_host.select { |h| host =~ pattern2regex(h) }.first
             seen_host = true
           elsif !seen_host
diff --git a/test/configs/numeric_host b/test/configs/numeric_host
new file mode 100644
index 0000000..cf75e50
--- /dev/null
+++ b/test/configs/numeric_host
@@ -0,0 +1,4 @@
+Host 1234
+  Compression yes
+  Port 1980
+  RekeyLimit 2G
diff --git a/test/test_config.rb b/test/test_config.rb
index 37e6eba..361c067 100644
--- a/test/test_config.rb
+++ b/test/test_config.rb
@@ -102,6 +102,13 @@ class TestConfig < Test::Unit::TestCase
     assert config['compression']
   end
   
+  def test_load_with_numeric_host
+    config = Net::SSH::Config.load(config(:numeric_host), "1234")
+    assert config['compression']
+    assert_equal '2G', config['rekeylimit']
+    assert_equal 1980, config['port']
+  end
+  
   private
 
     def config(name)