"Justin C. Sherrill" wrote: >Implementing a language-based shell happens to most every language;
First, a clarification -- I'm talking about a command shell (like tcsh or bash), not an interactive interpreter like the standard python interpreter or the read-eval-print loop (REPL) of lisp systems. The latter could, I suppose, be used as a command shell by using language features (like the "os" module in python) to execute system commands. But that would be incredibly tedious. >there's psh, the Perl shell, for instance: > >http://www.focusresearch.com/gregor/sw/psh/ This seems to be an ab initio effort to build a shell with perl-like language features, not actually built on perl. >There's also perlsh or Shell.pm, which come with Perl. That seems to be a REPL. Ie, it helps developing perl programs, but is not a substitute for a command shell. >For other languages - lazy searching turns up these things: > >Interactive Ruby Shell: >http://en.wikipedia.org/wiki/Interactive_Ruby_Shell This too is a REPL. >tcl shell? >http://fringe.davesource.com/Fringe/Computers/Languages/tcl_tk/tcl_shell.html REPL, as far as I can tell. >php shell: >http://jan.kneschke.de/projects/php-shell/ REPL. All the REPLs above are comparable to the standard python interactive interpreter. ipython is something else. Rahul
