If its self repair and or rideable at least in part depends how and where you ride your bikes. If you are younger (stronger / heavy build) and serious (tons of miles in fast clip speeds) bike rider and ride in some hilly region that has hairy/fast downhill rides, than you may not want to use that fork.

On the other hand, if you are past any competitive bracket or don't have any such ambitions and ride for pleasure in a sporting fashion in places where you don't reach freaky speeds, the fork might well still be rideable. Maybe if you are not shaving grams, you can fill the tube with epoxy (as per advice above) or 'epoxy in' inserted smaller diameter tube of some sort (if you are handy with such jobs).

I am sure such advice might be irresponsible or what you might choose to call it but way too often, I see here on the forum discussions that totally lack the context of the particular bike riders (mostly the OPosters don't supply any context, assuming everybody here has 'the same one' as them). Here in BF, you get seasoned semi-pro mixed with mere pleasure bike riders, commuters, you name it, from all kinds of regions. Like if I lived in Alps, or some freaky downhill region in US, etc., I might have different opinion on things. Having said all that, I'd also recommend showing the fork to some shop, more qualified folks...

I used to drive a Dodge van when I was much younger and it was completely fine in my home region in Canada but when taken on a coast to coast trips across US, I found at times my brakes were not up to the job on some downhills while I was eyeing those 'run away' sandy strips and wondering if I was ripe for them... and there were other instances when it was clear, the vehicle wasn't up to it, like too high temperatures in Death Valley, or too steep, too long uphills, even elevation above sea level while in Mexico on Popocatepetl