Add a "Open mintty here" item to Windows Explorer context menus. Basically `chere` with the addition of the Background key.

mintty_here.sh

#!/bin/bash

KEY="mintty"
PROMPT="Open mintty h&ere"

if [ -z "$KEY" ] || [ -z "$PROMPT" ] ; then
	echo "Key and Prompt cannot be empty"
	exit 1
fi

declare -a KEYS=(
	"/HKCR/Directory/Shell/$KEY"
	"/HKCR/Background/Shell/$KEY"
	"/HKCR/Drive/shell/$KEY"
	"/HKLM/SOFTWARE/Classes/Directory/Shell/$KEY"
	"/HKLM/SOFTWARE/Classes/Directory/Background/Shell/$KEY"
)

function list_keys () {
	for ITEM in "${KEYS[@]}" ; do
		echo -n "$ITEM: "
		regtool check $ITEM > /dev/null 2>&1
		ERR="$?"
		if [[ "$ERR" -ne "0" ]] ; then
			echo "(not found)"
			continue
		fi

		regtool get $ITEM
		regtool list $ITEM/

		echo -n "$ITEM/command: "
		regtool get $ITEM/command/
		echo ""
	done
}

function add_keys () {
	for ITEM in "${KEYS[@]}" ; do
		echo "== Add $ITEM =="
		set -x
		regtool -w add $ITEM
		regtool -w -s set $ITEM/ "$PROMPT"
		regtool -w add $ITEM/command
		if [[ "$ITEM" =~ .*/Background/Shell/.* ]] ; then
			regtool -w -e set $ITEM/command/ "C:\cygwin\bin\mintty.exe -e /bin/xhere /bin/bash.exe \"%V\""
		else
			regtool -w -e set $ITEM/command/ "C:\cygwin\bin\mintty.exe -e /bin/xhere /bin/bash.exe \"%L\""
		fi
		set +x
		echo ""
	done
}

function remove_keys () {
	for ITEM in "${KEYS[@]}" ; do
		echo "== Remove $ITEM =="
		regtool check $ITEM/command > /dev/null 2>&1
		ERR="$?"
		if [[ "$ERR" -ne "0" ]] ; then
			echo "$ITEM/command does not exist, aborting for safety."
			echo ""
			continue
		fi

		set -x
		regtool -w remove $ITEM/command
		regtool -w remove $ITEM
		set +x
		echo ""
	done
}


case $1 in
	"--uninstall" | "-u")
		remove_keys
	;;

	"" | "--install" | "-i")
		add_keys
	;;

	"--list" | "-l")
		list_keys
	;;

	* | "-h" | "--help")
		echo "Usage: $0 [-u --uninstall] [-i --install] [-l --list]"
	exit 1
 esac