From d6ca388adae0f50615e68a90c50aca8eaab804f3 Mon Sep 17 00:00:00 2001
From: Erik Martin-Dorel <erik.martin-dorel@irit.fr>
Date: Sat, 28 Mar 2020 23:12:24 +0100
Subject: [PATCH] docs: Update the custom_script default and documentation

* The "startGroup GroupTitle"/"endGroup" commands allow one to create
  timed foldable sections in the GitHub action logging.
---
 README.md  | 20 ++++++++++++++------
 action.yml | 20 ++++++++++++++------
 2 files changed, 28 insertions(+), 12 deletions(-)

diff --git a/README.md b/README.md
index 2bb3ab1..3cb86fa 100644
--- a/README.md
+++ b/README.md
@@ -52,12 +52,20 @@ Among `"minimal"`, `"4.07-flambda"`, `"4.09-flambda"`.
 
 *Optional* The main script run in the container; may be overridden. Default:
 
-    opam config list; opam repo list; opam list
-    opam pin add -n -y -k path $PACKAGE .
-    opam update -y
-    opam install -y -v -j 2 $PACKAGE
-    opam list
-    opam remove $PACKAGE
+    startGroup Print opam config
+      opam config list; opam repo list; opam list
+    endGroup
+    startGroup Fetch dependencies
+      opam pin add -n -y -k path $PACKAGE .
+      opam update -y
+    endGroup
+    startGroup Build
+      opam install -y -v -j 2 $PACKAGE
+      opam list
+    endGroup
+    startGroup Uninstallation test
+      opam remove $PACKAGE
+    endGroup
 
 *Note: this option is named `custom-script` rather than `script` or
 `run` to discourage changing its recommended, default value, while
diff --git a/action.yml b/action.yml
index bdebf96..557e306 100644
--- a/action.yml
+++ b/action.yml
@@ -14,12 +14,20 @@ inputs:
   custom_script:
     description: 'The main script run in the container; may be overridden.'
     default: |
-      opam config list; opam repo list; opam list
-      opam pin add -n -y -k path $PACKAGE .
-      opam update -y
-      opam install -y -v -j 2 $PACKAGE
-      opam list
-      opam remove $PACKAGE
+      startGroup Print opam config
+        opam config list; opam repo list; opam list
+      endGroup
+      startGroup Fetch dependencies
+        opam pin add -n -y -k path $PACKAGE .
+        opam update -y
+      endGroup
+      startGroup Build
+        opam install -y -v -j 2 $PACKAGE
+        opam list
+      endGroup
+      startGroup Uninstallation test
+        opam remove $PACKAGE
+      endGroup
 runs:
   using: 'docker'
   image: 'Dockerfile'