gopls/doc: document Zed editor

Change-Id: Iffa8a5555491c81e43d7f689ec56dcd189dc660a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/686917
Auto-Submit: Alan Donovan <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Robert Findley <[email protected]>

Author: adonovan

gopls/doc/editor/zed.md

@@ -0,0 +1,19 @@
+---
+title: "Gopls: Using Zed"
+---
+
+## Install `gopls`
+
+To use `gopls` with [Zed](https://zed.dev/), first
+[install the `gopls` executable](../index.md#installation) and ensure that the directory
+containing the resulting binary (either `$(go env GOBIN)` or `$(go env
+GOPATH)/bin`) is in your `PATH`.
+
+## That's it
+
+Zed has a built-in LSP client and knows to run `gopls` when visiting a
+Go source file, so most features work right out of the box.
+
+Zed does not yet support external `window/showDocument` requests,
+so web-based features will not work;
+see [Zed issue 24852](https://github.com/zed-industries/zed/discussions/24852).

gopls/doc/index.md

@@ -49,6 +49,7 @@ To get started with `gopls`, install an LSP plugin in your editor of choice.
 * [Sublime Text](editor/sublime.md)
 * [VS Code](https://github.com/golang/vscode-go/blob/master/README.md)
 * [Vim or Neovim](editor/vim.md)
+* [Zed](editor/zed.md)
 
 If you use `gopls` with an editor that is not on this list, please send us a CL
 [updating this documentation](contributing.md).