From 7d12e2b7324c5ad4cff071aad3e2d861fd644742 Mon Sep 17 00:00:00 2001
From: Masahiro Furudate <178inaba.git@gmail.com>
Date: Fri, 5 Apr 2024 02:26:09 +0900
Subject: [PATCH] Add description about patch versions to README

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index e542286..70bcdf5 100644
--- a/README.md
+++ b/README.md
@@ -185,6 +185,12 @@ steps:
 
 The `go-version-file` input accepts a path to a `go.mod` file or a `go.work` file that contains the version of Go to be used by a project.
 
+The `go` directive in `go.mod` can specify a patch version or omit it altogether (e.g., `go 1.22.0` or `go 1.22`).  
+If a patch version is specified, that specific patch version will be used.  
+If no patch version is specified, it will search for the latest available patch version in the cache,
+[versions-manifest.json](https://github.com/actions/go-versions/blob/main/versions-manifest.json), and the
+[official Go language website](https://golang.org/dl/?mode=json&include=all), in that order.
+
 If both the `go-version` and the `go-version-file` inputs are provided then the `go-version` input is used.
 > The action will search for the `go.mod` file relative to the repository root