minor nits:
* compile the edit utility once
* emit a warning during timeout

Add tests for emacs editing mode in ksh. While here, improve the output on test
failure.

Make the edit regress tests respect the KSH variable just like the main regress
tests. Makes it easier to run all tests using another binary:

$ pwd
/usr/src/regress/bin/ksh
$ make KSH=/usr/src/bin/ksh/obj/ksh

Add missing RCS IDs and zap redundant SRCS from Makefile.

The first version of the edit program used to test csh, ksh and mail was based
on the following reasoning: once the program to test has written some data it
has entered the main-loop and is by now ready to receive user input. At this
point it should be safe to start writing input and once the program once again
enters a blocking reading state, its done processing the input. This approach
was sensitive to timing and determining when a shell is done processing its
input (if ever) is tricky.

This iteration of the edit program takes a new approach and uses presence of a
prompt for synchronisation of I/O. It doesn't solve all problems but is a step
in the right direction.

Joint work with bluhm@

Revert previously added tests for file completion that are currently failing.

Prodded by bluhm@

Add tests for file completion in ksh emacs mode, currently failing.

While here, pass the v option to hexdump in order to output all data.

Pass the command to execute as an argument. Allows the edit program to be
reused.

Add new edit regress files.

Absent from my previous commit.

Add tests for emacs editing mode in ksh. While here, improve the output on test
failure.

Make the edit regress tests respect the KSH variable just like the main regress
tests. Makes it easier to run all tests using another binary:

$ pwd
/usr/src/regress/bin/ksh
$ make KSH=/usr/src/bin/ksh/obj/ksh

Add missing RCS IDs and zap redundant SRCS from Makefile.

The first version of the edit program used to test csh, ksh and mail was based
on the following reasoning: once the program to test has written some data it
has entered the main-loop and is by now ready to receive user input. At this
point it should be safe to start writing input and once the program once again
enters a blocking reading state, its done processing the input. This approach
was sensitive to timing and determining when a shell is done processing its
input (if ever) is tricky.

This iteration of the edit program takes a new approach and uses presence of a
prompt for synchronisation of I/O. It doesn't solve all problems but is a step
in the right direction.

Joint work with bluhm@

Revert previously added tests for file completion that are currently failing.

Prodded by bluhm@

Add tests for file completion in ksh emacs mode, currently failing.

While here, pass the v option to hexdump in order to output all data.

Pass the command to execute as an argument. Allows the edit program to be
reused.

Add new edit regress files.

Absent from my previous commit.