Minor linter fixes

10 files changed, 19 insertions, 25 deletions

diff --git a/internal/revision/parser.go b/internal/revision/parser.go
index 61de386..432ffd1 100644
--- a/internal/revision/parser.go
+++ b/internal/revision/parser.go
@@ -297,7 +297,7 @@ func (p *Parser) parseAt() (Revisioner, error) {
 		}
 
 		if t != cbrace {
-			return nil, &ErrInvalidRevision{fmt.Sprintf(`missing "}" in @{-n} structure`)}
+			return nil, &ErrInvalidRevision{s: `missing "}" in @{-n} structure`}
 		}
 
 		return AtCheckout{n}, nil
@@ -419,7 +419,7 @@ func (p *Parser) parseCaretBraces() (Revisioner, error) {
 		case re == "" && tok == emark && nextTok == minus:
 			negate = true
 		case re == "" && tok == emark:
-			return nil, &ErrInvalidRevision{fmt.Sprintf(`revision suffix brace component sequences starting with "/!" others than those defined are reserved`)}
+			return nil, &ErrInvalidRevision{s: `revision suffix brace component sequences starting with "/!" others than those defined are reserved`}
 		case re == "" && tok == slash:
 			p.unscan()
 		case tok != slash && start:
@@ -490,7 +490,7 @@ func (p *Parser) parseColonSlash() (Revisioner, error) {
 		case re == "" && tok == emark && nextTok == minus:
 			negate = true
 		case re == "" && tok == emark:
-			return nil, &ErrInvalidRevision{fmt.Sprintf(`revision suffix brace component sequences starting with "/!" others than those defined are reserved`)}
+			return nil, &ErrInvalidRevision{s: `revision suffix brace component sequences starting with "/!" others than those defined are reserved`}
 		case tok == eof:
 			p.unscan()
 			reg, err := regexp.Compile(re)
diff --git a/plumbing/filemode/filemode.go b/plumbing/filemode/filemode.go
index 594984f..b848a97 100644
--- a/plumbing/filemode/filemode.go
+++ b/plumbing/filemode/filemode.go
@@ -118,7 +118,7 @@ func isSetSymLink(m os.FileMode) bool {
 func (m FileMode) Bytes() []byte {
 	ret := make([]byte, 4)
 	binary.LittleEndian.PutUint32(ret, uint32(m))
-	return ret[:]
+	return ret
 }
 
 // IsMalformed returns if the FileMode should not appear in a git packfile,
diff --git a/plumbing/format/index/decoder.go b/plumbing/format/index/decoder.go
index d341d59..036b636 100644
--- a/plumbing/format/index/decoder.go
+++ b/plumbing/format/index/decoder.go
@@ -188,7 +188,7 @@ func (d *Decoder) doReadEntryNameV4() (string, error) {
 
 func (d *Decoder) doReadEntryName(len uint16) (string, error) {
 	name := make([]byte, len)
-	_, err := io.ReadFull(d.r, name[:])
+	_, err := io.ReadFull(d.r, name)
 
 	return string(name), err
 }
diff --git a/plumbing/object/change.go b/plumbing/object/change.go
index c9d1615..8b119bc 100644
--- a/plumbing/object/change.go
+++ b/plumbing/object/change.go
@@ -75,7 +75,7 @@ func (c *Change) Files() (from, to *File, err error) {
 func (c *Change) String() string {
 	action, err := c.Action()
 	if err != nil {
-		return fmt.Sprintf("malformed change")
+		return "malformed change"
 	}
 
 	return fmt.Sprintf("<Action: %s, Path: %s>", action, c.name())
diff --git a/plumbing/protocol/packp/capability/list.go b/plumbing/protocol/packp/capability/list.go
index 9609211..f41ec79 100644
--- a/plumbing/protocol/packp/capability/list.go
+++ b/plumbing/protocol/packp/capability/list.go
@@ -86,10 +86,7 @@ func (l *List) Get(capability Capability) []string {
 
 // Set sets a capability removing the previous values
 func (l *List) Set(capability Capability, values ...string) error {
-	if _, ok := l.m[capability]; ok {
-		delete(l.m, capability)
-	}
-
+	delete(l.m, capability)
 	return l.Add(capability, values...)
 }
 
diff --git a/remote.go b/remote.go
index e642c57..bc370e6 100644
--- a/remote.go
+++ b/remote.go
@@ -498,10 +498,8 @@ func (r *Remote) deleteReferences(rs config.RefSpec,
 			if _, ok := refsDict[rs.Dst(ref.Name()).String()]; ok {
 				return nil
 			}
-		} else {
-			if rs.Dst("") != ref.Name() {
-				return nil
-			}
+		} else if rs.Dst("") != ref.Name() {
+			return nil
 		}
 
 		cmd := &packp.Command{
@@ -1046,12 +1044,11 @@ func (r *Remote) List(o *ListOptions) (rfs []*plumbing.Reference, err error) {
 }
 
 func objectsToPush(commands []*packp.Command) []plumbing.Hash {
-	var objects []plumbing.Hash
+	objects := make([]plumbing.Hash, len(commands))
 	for _, cmd := range commands {
 		if cmd.New == plumbing.ZeroHash {
 			continue
 		}
-
 		objects = append(objects, cmd.New)
 	}
 	return objects
diff --git a/repository.go b/repository.go
index 1f6de76..065f087 100644
--- a/repository.go
+++ b/repository.go
@@ -1439,9 +1439,9 @@ func (r *Repository) ResolveRevision(rev plumbing.Revision) (*plumbing.Hash, err
 	var commit *object.Commit
 
 	for _, item := range items {
-		switch item.(type) {
+		switch item := item.(type) {
 		case revision.Ref:
-			revisionRef := item.(revision.Ref)
+			revisionRef := item
 
 			var tryHashes []plumbing.Hash
 
@@ -1494,7 +1494,7 @@ func (r *Repository) ResolveRevision(rev plumbing.Revision) (*plumbing.Hash, err
 			}
 
 		case revision.CaretPath:
-			depth := item.(revision.CaretPath).Depth
+			depth := item.Depth
 
 			if depth == 0 {
 				break
@@ -1522,7 +1522,7 @@ func (r *Repository) ResolveRevision(rev plumbing.Revision) (*plumbing.Hash, err
 
 			commit = c
 		case revision.TildePath:
-			for i := 0; i < item.(revision.TildePath).Depth; i++ {
+			for i := 0; i < item.Depth; i++ {
 				c, err := commit.Parents().Next()
 
 				if err != nil {
@@ -1534,8 +1534,8 @@ func (r *Repository) ResolveRevision(rev plumbing.Revision) (*plumbing.Hash, err
 		case revision.CaretReg:
 			history := object.NewCommitPreorderIter(commit, nil, nil)
 
-			re := item.(revision.CaretReg).Regexp
-			negate := item.(revision.CaretReg).Negate
+			re := item.Regexp
+			negate := item.Negate
 
 			var c *object.Commit
 
diff --git a/repository_test.go b/repository_test.go
index bbed604..2541cca 100644
--- a/repository_test.go
+++ b/repository_test.go
@@ -713,7 +713,7 @@ func (s *RepositorySuite) TestPlainCloneContextNonExistentWithNotEmptyDir(c *C)
 	c.Assert(err, IsNil)
 
 	dummyFile := filepath.Join(repoDirPath, "dummyFile")
-	err = ioutil.WriteFile(dummyFile, []byte(fmt.Sprint("dummyContent")), 0644)
+	err = ioutil.WriteFile(dummyFile, []byte("dummyContent"), 0644)
 	c.Assert(err, IsNil)
 
 	r, err := PlainCloneContext(ctx, repoDirPath, false, &CloneOptions{
diff --git a/storage/transactional/reference.go b/storage/transactional/reference.go
index c3a727c..3b009e2 100644
--- a/storage/transactional/reference.go
+++ b/storage/transactional/reference.go
@@ -27,7 +27,7 @@ func NewReferenceStorage(base, temporal storer.ReferenceStorer) *ReferenceStorag
 		ReferenceStorer: base,
 		temporal:        temporal,
 
-		deleted: make(map[plumbing.ReferenceName]struct{}, 0),
+		deleted: make(map[plumbing.ReferenceName]struct{}),
 	}
 }
 
diff --git a/worktree_bsd.go b/worktree_bsd.go
index d4ea327..0f8716d 100644
--- a/worktree_bsd.go
+++ b/worktree_bsd.go
@@ -12,7 +12,7 @@ import (
 func init() {
 	fillSystemInfo = func(e *index.Entry, sys interface{}) {
 		if os, ok := sys.(*syscall.Stat_t); ok {
-			e.CreatedAt = time.Unix(int64(os.Atimespec.Sec), int64(os.Atimespec.Nsec))
+			e.CreatedAt = time.Unix(os.Atimespec.Sec, os.Atimespec.Nsec)
 			e.Dev = uint32(os.Dev)
 			e.Inode = uint32(os.Ino)
 			e.GID = os.Gid