A few notes on how the golang one shows:

For bash:

The window box here doesn't always appear (seems mostly miss, not hit).
Variable declaration doesn't include how the variable was declared, and doesn't work at all when hovering over the actual declaration. Would be cool to include what the variable type was declared as (Guessing based on the initial value declared and saying "unknown" if not specified would be fine imo).
The function definition is not shown. Would be cool if we could perform reflection on the command and fetch any declared desc variable, and maybe arguments as well. I think maybe using declare to fetch properties and then maybe introspect if they are arguments ($1, $2, $@) might be neat as a standard.
References only ever shows references in opened files, not across the entire codebase.
There is no Format document. I realize this is somewhat subjective. Would be awesome if this project was written in golang as then you could use shfmt for it's formatter, but thats probably implementable in this project as well.
- Dokku uses shfmt with a few args, though honestly we'd be fine with removing those args and just using the project as is. We use it with: shfmt -bn -ci -i 2 -w ..
  - -bn: Binary ops like && and | may start a line.
  - -ci: Switch cases will be indented.
  - -i 2: indent 2
  - -w: write the output

Add Rename Symbol Capability #161

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