5 files changed, 8 insertions, 7 deletions
diff --git a/plumbing/object/blob.go b/plumbing/object/blob.go
index 2608477..f376baa 100644
--- a/plumbing/object/blob.go
+++ b/plumbing/object/blob.go
@@ -67,7 +67,7 @@ func (b *Blob) Decode(o plumbing.EncodedObject) error {
 }
 
 // Encode transforms a Blob into a plumbing.EncodedObject.
-func (b *Blob) Encode(o plumbing.EncodedObject) error {
+func (b *Blob) Encode(o plumbing.EncodedObject) (err error) {
 	o.SetType(plumbing.BlobObject)
 
 	w, err := o.Writer()
diff --git a/plumbing/object/commit.go b/plumbing/object/commit.go
index a317714..c9a4c0e 100644
--- a/plumbing/object/commit.go
+++ b/plumbing/object/commit.go
@@ -226,7 +226,7 @@ func (b *Commit) Encode(o plumbing.EncodedObject) error {
 	return b.encode(o, true)
 }
 
-func (b *Commit) encode(o plumbing.EncodedObject, includeSig bool) error {
+func (b *Commit) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	o.SetType(plumbing.CommitObject)
 	w, err := o.Writer()
 	if err != nil {
diff --git a/plumbing/object/file.go b/plumbing/object/file.go
index 40b5206..1c5fdbb 100644
--- a/plumbing/object/file.go
+++ b/plumbing/object/file.go
@@ -44,7 +44,7 @@ func (f *File) Contents() (content string, err error) {
 }
 
 // IsBinary returns if the file is binary or not
-func (f *File) IsBinary() (bool, error) {
+func (f *File) IsBinary() (bin bool, err error) {
 	reader, err := f.Reader()
 	if err != nil {
 		return false, err
diff --git a/plumbing/object/tag.go b/plumbing/object/tag.go
index 19e55cf..905206b 100644
--- a/plumbing/object/tag.go
+++ b/plumbing/object/tag.go
@@ -95,7 +95,8 @@ func (t *Tag) Decode(o plumbing.EncodedObject) (err error) {
 
 	r := bufio.NewReader(reader)
 	for {
-		line, err := r.ReadBytes('\n')
+		var line []byte
+		line, err = r.ReadBytes('\n')
 		if err != nil && err != io.EOF {
 			return err
 		}
@@ -168,7 +169,7 @@ func (t *Tag) Encode(o plumbing.EncodedObject) error {
 	return t.encode(o, true)
 }
 
-func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) error {
+func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	o.SetType(plumbing.TagObject)
 	w, err := o.Writer()
 	if err != nil {
diff --git a/plumbing/object/tree.go b/plumbing/object/tree.go
index 2fcd979..c2399f8 100644
--- a/plumbing/object/tree.go
+++ b/plumbing/object/tree.go
@@ -233,7 +233,7 @@ func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
 }
 
 // Encode transforms a Tree into a plumbing.EncodedObject.
-func (t *Tree) Encode(o plumbing.EncodedObject) error {
+func (t *Tree) Encode(o plumbing.EncodedObject) (err error) {
 	o.SetType(plumbing.TreeObject)
 	w, err := o.Writer()
 	if err != nil {
@@ -242,7 +242,7 @@ func (t *Tree) Encode(o plumbing.EncodedObject) error {
 
 	defer ioutil.CheckClose(w, &err)
 	for _, entry := range t.Entries {
-		if _, err := fmt.Fprintf(w, "%o %s", entry.Mode, entry.Name); err != nil {
+		if _, err = fmt.Fprintf(w, "%o %s", entry.Mode, entry.Name); err != nil {
 			return err
 		}