fixing improperly-formatted-output of pattern matching within comprehension arguments.

test/test_try_catch.coffee

@@ -0,0 +1,31 @@
+# Basic exception throwing.
+block: -> (throw 'up')
+throws block, 'up'
+
+
+# Basic try/catch.
+result: try
+  10
+finally
+  15
+
+ok result is 10
+
+result: try
+  throw 'up'
+catch err
+  err.length
+
+ok result is 2
+
+
+result: try throw 'error' catch err then err.length
+
+ok result is 5
+
+
+# try/catch with empty clauses still compiles.
+try
+  # nothing
+catch err
+  #nothing