From 836f0068dc03627bc48afa32db5256947beb8195 Mon Sep 17 00:00:00 2001
From: grepsuzette <350354+grepsuzette@users.noreply.github.com>
Date: Fri, 5 May 2023 00:53:40 +0800
Subject: [PATCH] chore: add explanations about how to use gofumpt in vim
 (#747)

Co-authored-by: grepsuzette <grepsuzette@users.noreply.github.com>
---
 CONTRIBUTING.md | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e5f1c22411b..2a567c8539f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -79,7 +79,7 @@ Add to your `.vimrc` file:
 
 ```vim
 function! GnoFmt()
-    cexpr system('gofmt -e -w ' . expand('%')) "or replace with gofumpt
+    cexpr system('gofmt -e -w ' . expand('%')) "or replace with gofumpt, see below
     edit!
 endfunction
 command! GnoFmt call GnoFmt()
@@ -90,6 +90,12 @@ augroup gno_autocmd
 augroup END
 ```
 
+To use *gofumpt* instead of *gofmt*, as hinted in the comment, you may either have `gofumpt` in your PATH or substitute the cexpr line above with the following (please make sure to replace `<path/to/gno>` with the path to your local gno repository):
+
+```vim
+cexpr system('go run -modfile </path/to/gno>/misc/devdeps/go.mod mvdan.cc/gofumpt -w ' . expand('%'))
+```
+
 #### Emacs Support
 
 1. Install [go-mode.el](https://github.com/dominikh/go-mode.el).