diff --git a/gitTag.query.go b/gitTag.query.go
index ef87561..750d501 100644
--- a/gitTag.query.go
+++ b/gitTag.query.go
@@ -89,7 +89,7 @@ func (repo *Repo) gitVersionByName(name string) (string, error) {
 		}
 		return strings.TrimSpace(output), nil
 	}
-	if ! repo.IsBranch(name) {
+	if !repo.IsBranch(name) {
 		// tag does not exist
 		log.Log(GITPBWARN, "LocalTagExists()", name, "did not exist")
 		return "", errors.New("gitDescribeByName() git fatal: Not a valid object name: " + name)
diff --git a/gitTag.update.go b/gitTag.update.go
index 18af8d9..ecf0d6b 100644
--- a/gitTag.update.go
+++ b/gitTag.update.go
@@ -58,7 +58,7 @@ func (repo *Repo) UpdateGitTags() error {
 
 		newr := GitTag{
 			Refname:     refname,
-			Hash:  hash,
+			Hash:        hash,
 			Subject:     subject,
 			Creatordate: ctime,
 			Authordate:  atime,
diff --git a/repo.protofiles.go b/repo.protofiles.go
new file mode 100644
index 0000000..81a4b6f
--- /dev/null
+++ b/repo.protofiles.go
@@ -0,0 +1,74 @@
+package gitpb
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"go.wit.com/log"
+)
+
+// This returns the list of autogenerated protobuf files
+// it assumes any file *.pb.go is autogenerated
+//
+// this are made from protoc / proto-gen-go
+// these packages also use go.wit.com/apps/autogenpb
+//
+// errors() if a .proto file does not have an autogenerated .pb.go file
+func (repo *Repo) IsProtobuf() (bool, []string, error) {
+	fullp, fullc, err := scanForProtobuf(repo.FullPath)
+	protos := make(map[string]string)
+	protoc := make(map[string]string)
+	var anyfound bool = false
+	var allc []string
+	for _, s := range fullp {
+		filebase := filepath.Base(s)
+		name := strings.TrimSuffix(filebase, ".proto")
+		anyfound = true
+		protos[name] = s
+	}
+	for pname, _ := range protos {
+		var found bool = false
+		for _, s := range fullc {
+			cfilebase := filepath.Base(s)
+			cname := strings.TrimSuffix(cfilebase, ".pb.go")
+			protoc[cname] = s
+			if cname == pname {
+				found = true
+				allc = append(allc, cfilebase)
+			}
+		}
+		if found {
+			// log.Info("found ok")
+		} else {
+			log.Info("missing compiled proto file:", pname+"pb.go")
+			err = errors.New("compiled file " + pname + ".pb.go missing")
+		}
+	}
+	return anyfound, allc, err
+}
+
+func scanForProtobuf(srcDir string) ([]string, []string, error) {
+	var protofiles []string
+	var compiled []string
+	err := filepath.Walk(srcDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			log.Log(GITPBWARN, "Error accessing path:", path, err)
+			return err
+		}
+
+		if strings.HasSuffix(path, ".proto") {
+			//
+			protofiles = append(protofiles, path)
+		}
+
+		if strings.HasSuffix(path, ".pb.go") {
+			compiled = append(compiled, path)
+		}
+
+		return nil
+	})
+
+	return protofiles, compiled, err
+}