Re: Build original Csh on Linux and FreeBSD.

[RVP <rvp%SDF.ORG@localhost>]

On Mon, 5 Sep 2022, Matheus wrote:

> I modified the sources from the Debian repository so to build on Bionic/Linux [Android].
> The backspace issue is present there as well.

The backspace issue is seen on NetBSD and /bin/csh as well--if you
run it on the _console_ as a regular user. If you run csh as root,
or run it as any user in a pseudo-terminal (ie. in xterm/tmux or
ssh/telnet and hosted on NetBSD), then it works as you would
(intuitively) expect.  It looks like file.c:tenex()->pushback() is
using ioctl(TIOCSTI) to reinject typed chars. back into the "output"
stream, and that fails on NetBSD nowadays (see checks in kern/tty.c).

Anyway, since NetBSD csh is compiled with -DEDIT, try `set filec edit'.
Then, you can use libedit for standard Emacs-style of line-editing, and
tab for filename completion.

-RVP