As requested by configure, I am filing this report. When running the configure script of Autoconf on NextStep (and probably OpenStep and Rhapsody), it reports that it could not find a shell supporting shell functions. Oddly enough, the NextStep factory-supplied shell _does_ support functions, so it is not clear why this message is being emitted. % cd autoconf % ./configure Found no shell that has working shell functions. Please tell autoconf@xxxxxxx about your system. Found no shell that has working shell functions. Please tell autoconf@xxxxxxx about your system. configure: creating cache config.cache ... -- ES