From: utzoo!decvax!decwrl!sun!megatest!fortune!hpda!hplabs!hao!seismo!rlgvax!guy
Newsgroups: net.unix-wizards
Title: Re:  csh: pre-prompt execution
Article-I.D.: rlgvax.171
Posted: Thu Mar 31 11:18:31 1983
Received: Sun Apr  3 01:23:42 1983
References: sri-arpa.751

A version of the Bourne shell done at the Naval Surface Weapons Center
does exactly that (in addition to having a history and alias mechanism);
it runs macro() on the PS1 string before printing it.  That way, you can
set PS1 to '$CWD >' to have the current working directory printed with
the prompt (they added the CWD variable), or '`foobar` --' to run the
"foobar" command and substitute its output into the prompt, or...

					Guy Harris
					RLG Corporation
					{seismo|mcnc|we13}!rlgvax!guy