Hi Jim,

> sed's configure.ac specifies gl_DISABLE_THREADS, and that caused three
> thread-using gnulib tests to fail. Add an #if-guarded exit (77) to each
> of those, so they are skipped in this case.

Thanks for this. I prefer to move the #if around most of the file,
  - because the main() function here already is quite complex,
  - so that there's less trouble if someone wants to use --avoid=thread
    some day.

Pushed the attached patch.

Bruno