The GNU Readline library is a programming tool that provides a
consistent user interface for recalling lines of previously typed
input and performing editing tasks on input lines.
paul@freefall.cdrom.com
There was a bug with tcsh: when readline attempt to get tty
modes from background, it got no-echo editing tcsh mode.
Workaround for this implemented via TIOCGWINSZ/TIOCSWINSZ
with same winsize structure: it does nothing expect polling
process from background. Look tcsh_hack.readme for details.
Here is megred version with readline comes from gdb4.11
ache@astral.msk.su