Don't show commit logs if not available

pull_request.go

@@ -75,23 +75,27 @@ func writePullRequestChanges(repo *Repo, messageFile string) error {
 # Requesting a pull to %s from %s
 #
 # Write a message for this pull reuqest. The first block
-# of the text is the title and the rest is description.
+# of the text is the title and the rest is description.%s
+`
+	startRegexp := regexp.MustCompilePOSIX("^")
+	endRegexp := regexp.MustCompilePOSIX(" +$")
+
+	commitLogs, _ := FetchGitCommitLogs(repo.Base, repo.Head)
+	var changesMsg string
+	if len(commitLogs) > 0 {
+		commitLogs = strings.TrimSpace(commitLogs)
+		commitLogs = startRegexp.ReplaceAllString(commitLogs, "# ")
+		commitLogs = endRegexp.ReplaceAllString(commitLogs, "")
+		changesMsg = `
 #
 # Changes:
 #
 %s
 `
-	startRegexp := regexp.MustCompilePOSIX("^")
-	endRegexp := regexp.MustCompilePOSIX(" +$")
-
-	commitLogs, err := FetchGitCommitLogs(repo.Base, repo.Head)
-	check(err)
-
-	commitLogs = strings.TrimSpace(commitLogs)
-	commitLogs = startRegexp.ReplaceAllString(commitLogs, "# ")
-	commitLogs = endRegexp.ReplaceAllString(commitLogs, "")
+		changesMsg = fmt.Sprintf(changesMsg, commitLogs)
+	}
 
-	message = fmt.Sprintf(message, repo.FullBase(), repo.FullHead(), commitLogs)
+	message = fmt.Sprintf(message, repo.FullBase(), repo.FullHead(), changesMsg)
 
 	return ioutil.WriteFile(messageFile, []byte(message), 0644)
 }

repo.go

 package main
 
+import (
+	"strings"
+)
+
 type Repo struct {
 	Dir     string
 	Editor  string
@@ -10,11 +14,19 @@ type Repo struct {
 }
 
 func (r *Repo) FullBase() string {
-	return r.Owner + ":" + r.Base
+	if strings.Contains(r.Base, ":") {
+		return r.Base
+	} else {
+		return r.Owner + ":" + r.Base
+	}
 }
 
 func (r *Repo) FullHead() string {
-	return r.Owner + ":" + r.Head
+	if strings.Contains(r.Head, ":") {
+		return r.Head
+	} else {
+		return r.Owner + ":" + r.Head
+	}
 }
 
 func NewRepo() *Repo {