How to mimic the terminal driver?

[Doug Gwyn]

In article <35 at umvlsi.ECS.UMASS.EDU> vishwana at umvlsi.ECS.UMASS.EDU (Chidambaram Vishwanath) writes:
>     I have taken upon myself the following task, viz.,: I want to add 
>an extra feature to the C-shell whereby I can recall earlier commands
>by pressing an arrow-key.  [etc.]

Why reinvent the wheel?  The so-called "Tenex Cshell" already has similar
support built in.  I think it may even have become the standard 4.3BSD
Cshell.  You can also get this in the Korn shell and the BRL Bourne shell.
A terminal editing wrapper process was posted to one of the newsgroups
only a few months ago, if you want to use the separate-process approach.