#<<A

[Alan Bawden <Alan@LCS.MIT.EDU>]

  snowview:alan> scsh
  Welcome to scsh 0.6.0 (Chinese Democracy)
  Type ,? for help.
  > #<<A

  Error: #<< here-string empty delimiter line
         #{Input-fdport #{Input-channel "standard input"}}
  > 

So a single character delimiter line is being treated as if it was empty...

Interestingly, an empty delimiter line is accepted, and works as you might
expect -- the string is terminated by an empty line -- which makes me
wonder what this error check thinks it is protecting me from.