tcsh - An enhanced version of csh, the C shell.
Tcsh is an enhanced but completely compatible version of csh, the C
shell. Tcsh is a command language interpreter which can be used both
as an interactive login shell and as a shell script command processor.
Tcsh includes a command line editor, programmable word completion,
spelling correction, a history mechanism, job control and a C language
by Vitezslav Crhonek (2010-10-05):
- Fix tcsh obeys printexitvalue for back-ticks
- Remove extra fork when tcsh processes backquotes