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# Make line editor input go straight to the current TCP session.
# Returns when the string $TCP_TALK_ESCAPE (default :) is read on its own.
# Otherwise, $TCP_TALK_ESCAPE followed by whitespace at the start of a line
# is stripped off and the rest of the line passed to the shell.
#
# History is not currently handled, because this is difficult.
: ${TCP_TALK_ESCAPE:=:}
tcp-accept-line-or-exit() {
emulate -L zsh
setopt extendedglob
local match mbegin mend
if [[ $BUFFER = ${TCP_TALK_ESCAPE}[[:blank:]]#(#b)(*) ]]; then
if [[ -z $match[1] ]]; then
BUFFER=
zle -A .accept-line accept-line
PS1=$TCP_SAVE_PS1
unset TCP_SAVE_PS1
zle -I
print '\r[Normal keyboard input restored]' >&2
else
BUFFER=$match[1]
fi
zle .accept-line
else
# BUGS: is deleted from the command line and doesn't appear in
# the history.
# The following attempt to get the BUFFER into the history falls
# foul of the fact that we need to accept the current line first.
# But we don't actually want to accept the current line at all.
# print -s -r - $BUFFER
# This is my function to send data over a TCP connection; replace
# it with something else or nothing.
tcp_send $BUFFER
BUFFER=
fi
}
TCP_SAVE_PS1=${PS1##\[T*\]}
if [[ -o prompt_subst ]]; then
PS1="T[\$TCP_SESS]$TCP_SAVE_PS1"
else
PS1="[T]$TCP_SAVE_PS1"
fi
zle -N tcp-accept-line-or-exit
zle -A tcp-accept-line-or-exit accept-line
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