[core1024]

LOL! I didn't know this about US-International. I was always wondering why the hell I need to type two quotes and then delete the second just to enter a single one. Obviously " and space does the job, but I didn't thought about this, so I switched to US layout :)

Now I've tested with your layout and it turns out that you can type it as you say by just omitting the space (except for the letters that can be accented) or otherwise just use my method by entering ' twice and deleting the second one (maybe at the expense of greater error rate).