Please:

   alias hncomment='fold -w 77 -s | sed "s/^/   /" | pbcopy'

   use:
   echo "blah blah blah" | hncomment
   command-v

Thus:

     The reason this approach is problematic is that it means the traceback for 
   an unexpected UnicodeDecodeError or UnicodeEncodeError in a large Python 2.x 
   code base almost never points you to the code that is broken. Instead, you 
   have to trace the origins of the data in the failing operation, and try to 
   figure out where the unexpected 8-bit or Unicode code string was introduced. 
   By contrast, Python 3 is designed to fail fast in most situations[...]