-st argument causes error while --style does not

[rla]

Works well:

css-sprite public/images public/images/social/follow/*.png \
-n follow.png --margin 0 --style social.css

gives error:

css-sprite public/images public/images/social/follow/*.png \
-n follow.png --margin 0 -st social.css

Error:

TypeError: Arguments to path.resolve must be strings
    at Object.exports.resolve (path.js:313:15)
    at unrelative (/usr/local/lib/node_modules/css-sprite/node_modules/vinyl-fs/node_modules/glob-stream/index.js:37:19)
    at Array.map (native)
    at Object.gs.createStream (/usr/local/lib/node_modules/css-sprite/node_modules/vinyl-fs/node_modules/glob-stream/index.js:53:27)
    at /usr/local/lib/node_modules/css-sprite/node_modules/vinyl-fs/node_modules/glob-stream/index.js:105:17
    at Array.map (native)
    at Object.gs.create (/usr/local/lib/node_modules/css-sprite/node_modules/vinyl-fs/node_modules/glob-stream/index.js:104:29)
    at Object.module.exports [as src] (/usr/local/lib/node_modules/css-sprite/node_modules/vinyl-fs/lib/src/index.js:13:23)
    at Object.module.exports.create (/usr/local/lib/node_modules/css-sprite/index.js:45:9)
    at Object.<anonymous> (/usr/local/lib/node_modules/css-sprite/bin/cli.js:77:10)

Tried to figure out cause but could not.

[aslansky]

nomnom seems to not handle two chars as an option abbreviation. So I had to change -st to -s. But that is even better because it's shorter.

The fix will be in the next release. Thanks for reporting.