RUBY-15804: not all keys are comparable so let's convert them to strings

Author: os97673

ChangeLog.md

@@ -1,3 +1,7 @@
+## [0.4.23.beta9](https://github.com/ruby-debug/ruby-debug-ide/compare/v0.4.23.beta9...v0.4.23.beta10)
+
+* fixed problem with printing hashes [RUBY-15804](https://youtrack.jetbrains.com/issue/RUBY-15804)
+
 ## [0.4.23.beta9](https://github.com/ruby-debug/ruby-debug-ide/compare/v0.4.23.beta8...v0.4.23.beta9)
 
 * problem with calculating local varibales for 1.8 fixed

lib/ruby-debug-ide/version.rb

@@ -1,3 +1,3 @@
 module Debugger
-  IDE_VERSION='0.4.23.beta9'
+  IDE_VERSION='0.4.23.beta10'
 end

lib/ruby-debug-ide/xml_printer.rb

@@ -189,7 +189,7 @@ def build_compact_name(value_str, value)
         end
       end
       if value.is_a?(Hash)
-        slice = value.sort_by { |k,v| k }[0..5]
+        slice = value.sort_by { |k,v| k.to_s }[0..5]
         compact = slice.map {|kv| "#{kv[0]}: #{kv[1]}"}.join(", ")
         compact = "{" + compact + (slice.size != value.size ? ", ..." : "") + "}"
       end