fstty

linux下bash的源码

#
# A function that works as a front end for both stty and the `bind'
# builtin, so the tty driver and readline see the same changes
#

#
# Convert between the stty ^H control character form and the readline \C-H
# form
#
cvt()
{
	echo "$@" | cat -v | sed 's/\^/\\C-/'
}

#
# stty front-end.  Parses the argument list and creates two command strings,
# one for stty, another for bind.
#
fstty()
{
	local	cmd="" bargs=""
	local	e

	while [ $# -gt 0 ]
	do
		case "$1" in
		-a)	cmd="$cmd everything"
			;;
		erase)	shift;
			e=$(cvt "$1")
			cmd="$cmd erase $1"
			bargs="$bargs '\"$e\": backward-delete-char'"
			;;
		kill)	shift
			e=$(cvt "$1")
			cmd="$cmd kill $1"
			bargs="$bargs '\"$e\": unix-line-discard'"
			;;
		werase)	shift;
			e=$(cvt "$1")
			cmd="$cmd erase $1"
			bargs="$bargs '\"$e\": backward-kill-word'"
			;;
		lnext)	shift;
			e=$(cvt "$1")
			cmd="$cmd erase $1"
			bargs="$bargs '\"$e\": quoted-insert'"
			;;
		*)	cmd="$cmd $1"
			;;
		esac
		shift
	done

	command stty $cmd
	if [ -n "$bargs" ]; then
		builtin bind $bargs
	fi
}