From 1ee7cfa40ded6f993ff425b9e69007741ce82b5b Mon Sep 17 00:00:00 2001
From: Carlo Strub <cs@carlostrub.ch>
Date: Fri, 2 Feb 2018 22:58:50 +0100
Subject: [PATCH] add some comments

---
 sisyphus/sisyphus.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sisyphus/sisyphus.go b/sisyphus/sisyphus.go
index 853d511..0cd25f3 100644
--- a/sisyphus/sisyphus.go
+++ b/sisyphus/sisyphus.go
@@ -254,6 +254,7 @@ COPYRIGHT:
 	app.Run(os.Args)
 }
 
+// learn invokes the learning process for a slice of maildirs
 func learn(maildirs []sisyphus.Maildir, dbs map[sisyphus.Maildir]*bolt.DB) {
 	mails, err := sisyphus.LoadMails(maildirs)
 	if err != nil {
@@ -279,6 +280,7 @@ func learn(maildirs []sisyphus.Maildir, dbs map[sisyphus.Maildir]*bolt.DB) {
 	return
 }
 
+// backup creates a backup copy of the existing database
 func backup(maildirs []sisyphus.Maildir, dbs map[sisyphus.Maildir]*bolt.DB) {
 	for _, d := range maildirs {
 		db := dbs[d]