If you try to sshkey del the key you're using, you get told you can't

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/gitano/usercommand.lua b/lib/gitano/usercommand.lua
index 3816f36..e33921a 100644
--- a/lib/gitano/usercommand.lua
+++ b/lib/gitano/usercommand.lua
@@ -161,6 +161,10 @@ local function builtin_sshkey_prep(config, _, cmdline, context)
       if not utab.keys[cmdline[3]] then
 	 return "deny", "Key tag " .. cmdline[3] .. " does not exist"
       end
+      -- And that it's not the one we're currently using
+      if cmdline[3] == context.keytag then
+	 return "deny", "Key tag " .. cmdline[3] .. " is in use"
+      end
    end
    return action, reason
 end