config: add support for branch description

2 files changed, 24 insertions, 0 deletions

diff --git a/config/branch.go b/config/branch.go
index fe86cf5..a8fe0b5 100644
--- a/config/branch.go
+++ b/config/branch.go
@@ -2,6 +2,7 @@ package config
 
 import (
 	"errors"
+	"strings"
 
 	"github.com/go-git/go-git/v5/plumbing"
 	format "github.com/go-git/go-git/v5/plumbing/format/config"
@@ -26,6 +27,12 @@ type Branch struct {
 	// "true" and "interactive".  "false" is undocumented and
 	// typically represented by the non-existence of this field
 	Rebase string
+	// Description explains what the branch is for.
+	// Multi-line explanations may be used.
+	//
+	// Original git command to edit:
+	//	git branch --edit-description
+	Description string
 
 	raw *format.Subsection
 }
@@ -75,9 +82,20 @@ func (b *Branch) marshal() *format.Subsection {
 		b.raw.SetOption(rebaseKey, b.Rebase)
 	}
 
+	if b.Description == "" {
+		b.raw.RemoveOption(descriptionKey)
+	} else {
+		desc := quoteDescription(b.Description)
+		b.raw.SetOption(descriptionKey, desc)
+	}
+
 	return b.raw
 }
 
+func quoteDescription(desc string) string {
+	return strings.ReplaceAll(desc, "\n", `\n`)
+}
+
 func (b *Branch) unmarshal(s *format.Subsection) error {
 	b.raw = s
 
@@ -85,6 +103,11 @@ func (b *Branch) unmarshal(s *format.Subsection) error {
 	b.Remote = b.raw.Options.Get(remoteSection)
 	b.Merge = plumbing.ReferenceName(b.raw.Options.Get(mergeKey))
 	b.Rebase = b.raw.Options.Get(rebaseKey)
+	b.Description = unquoteDescription(b.raw.Options.Get(descriptionKey))
 
 	return b.Validate()
 }
+
+func unquoteDescription(desc string) string {
+	return strings.ReplaceAll(desc, `\n`, "\n")
+}
diff --git a/config/config.go b/config/config.go
index 1aee25a..a16a5e5 100644
--- a/config/config.go
+++ b/config/config.go
@@ -247,6 +247,7 @@ const (
 	rebaseKey        = "rebase"
 	nameKey          = "name"
 	emailKey         = "email"
+	descriptionKey   = "description"
 	defaultBranchKey = "defaultBranch"
 
 	// DefaultPackWindow holds the number of previous objects used to