mostly brackets and formatting

lib/risc/instruction.rb

@@ -77,7 +77,7 @@ module Risc
     end
     def source_mini
       return "(no source)" unless source
-      return "(from: #{source[0..15]})" if source.is_a?(String)
+      return "(from: #{source[0..25]})" if source.is_a?(String)
       "(from: #{source.class.name.split("::").last})"
     end
   end