From ee429aea17df613758bbee451f96ecf80e2cef9e Mon Sep 17 00:00:00 2001
From: Greg Miller <9447643+devjgm@users.noreply.github.com>
Date: Fri, 25 Feb 2022 21:13:50 -0500
Subject: [PATCH] chore: gitignore ephemeral files that clangd uses

This PR tells git to ignore ephemeral files that are created when
developers use clangd.

clangd needs a `compile_commands.json` file at the root of the repo (or
in a `build/` directory) to tell it how to compile each file. CMake can
generate this file with something like the following:

```console
$ cmake -Scmake -B.build \
  -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
  -Dprotobuf_BUILD_TESTS=OFF
$ ln -sf .build/compile_commands.json .
```

Then clangd will compile and index files into the `.cache` directory.
---
 .gitignore | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.gitignore b/.gitignore
index 1040236af1..4fe3edde37 100644
--- a/.gitignore
+++ b/.gitignore
@@ -222,3 +222,7 @@ _build/
 
 # BenchmarkDotNet
 BenchmarkDotNet.Artifacts/
+
+# Clangd uses these common ephemeral files
+.cache
+compile_commands.json