acme/Watch: dial unix /tmp/ns..:0/acme: not supported by plan 9

[anton2920]

I was hoping to get acme commands to run on native Plan 9 edition 4.

Unfortunately, neither acme/Watch nor acme/acmego wasn't able to run. I assume that's because they rely on UDS that is provided by plan9port's version of acme, which is not the case on Plan 9 (?).

I'll be glad to implement the fix, but I'm not fluent enough with Plan 9/acme architectures yet. If you could give me a hint, I could give it a try. In either case, I can test somebodies PR.

[anton2920]

Yesterday I was scrolling issues and PRs, and I've found #28, which was a good starting point in porting these must-have applicaitons to Plan 9.

I've rebased this PR to the latest main, and implemented acme/Watch and acme/acmego commands that work on Plan 9. I've even added cb(1) as a supported acme/acmego formatter.

Unfortunately, it seems that these changes are too big to be merged into trunk, so I will maintain them under my fork: https://github.com/anton2920/9fans-go.

Closing.