incdec


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function incdec {
	local EX_DATAERR=65

	# Portion of the line from point to the end of the line.
	local line_part="${READLINE_LINE:$READLINE_POINT}"

	# Number to increment.
	local number=

	# If the line part doesn't contain a number, exit.
	if ! [[ "$line_part" =~ ([0-9]+) ]]; then
		return $EX_DATAERR
	fi

	number=${BASH_REMATCH[1]}

	echo "$(($number + 1))"
}

function __readline_incdec_incdec2 {
	# echo "!!"
	echo !#
}

# bind -x '"\C-xa+":incdec'
# bind '"\C-xaa":\C-xa+'

function __readline_incdec_save_readline_point {
	__readline_incdec_readline_point="$READLINE_POINT"
}

bind -x '"\C-xasrp": __readline_incdec_save_readline_point'

# bind '"\C-xaa": \C-xasrp\C-c$(__readline_incdec_incdec2)\e\C-e'
# bind '"\C-xaa": \C-xasrp'
bind '"\C-xaa": __readline_incdec_incdec2'


# 2021.01.15: Idea: Maybe try using $EDITOR