#!/bin/sh

case "$1" in
    # Color diff files.
    *.diff | *.patch)
        < "$1" colordiff
        ;;
    *)
        # Display directory contents.
        if [ -d "$1" ]; then
            echo "=> Contents of $1:"
            ls "$1"
            exit 0
        fi

        # We don't handle this format.
        exit 1
esac

# No further processing by lesspipe necessary.
exit 0