I am trying to understand (and fix) the following problem. I am running clisp on cygwin & windows. Slime is running from windows' emacs. If I launch clisp from a terminal (either cygwin's or windows' cmd.exe), commands such as

(ext:run-shell-command "pwd")

work. So, it does not seem to matter where I call clisp from. But if I try the same from within slime, I get NIL. The value of `inferior-lisp-program' points to the clisp executable: c:\cygwin\bin\clisp.exe Thanks, Mirko