format: resolve variables in customFormatter field

[uniquefine]

Fixes #2582

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[dcarney-stripe]

@uniquefine Are you still planning to get this PR merged? I would love to see this long-standing issue get closed, as I have some code that would be able to take advantage of the fix.

[uniquefine]

Yes, I was waiting for a review. I'll resolve the conflicts and ping the maintainers in slack.

[Olshansk]

🚀

[telnet2]

I encountered the same issue. In my case, I want to add -local xxx argument to goimports, which seems not doable using go.formatTool=goimports. I created a goimports.sh within the workspace and tried to call it, but it failed with "not found" error message.

[dcarney-stripe]

@uniquefine What's left to get this merged? I'd still really like to see it get merged in.

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Message from Hyang-Ah Hana Kim:

Patch Set 1:

(1 comment)

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This PR is being closed because golang.org/cl/520015 has been abandoned.

Submitted rebased change https://go-review.git.corp.google.com/c/vscode-go/+/576296