[version] Support --build-options

Ensure that all flags are forwarded to `git version`

Fixes #2440

commands/version.go

@@ -2,7 +2,6 @@ package commands
 
 import (
 	"github.com/github/hub/ui"
-	"github.com/github/hub/utils"
 	"github.com/github/hub/version"
 )
 
@@ -18,10 +17,8 @@ func init() {
 }
 
 func runVersion(cmd *Command, args *Args) {
-	output, err := version.FullVersion()
-	if output != "" {
-		ui.Println(output)
-	}
-	utils.Check(err)
+	versionCmd := args.ToCmd()
+	versionCmd.Spawn()
+	ui.Printf("hub version %s\n", version.Version)
 	args.NoForward()
 }

github/crash_report.go

@@ -94,19 +94,23 @@ const crashReportTmpl = "Crash report - %v\n\n" +
 	"Error (%s): `%v`\n\n" +
 	"Stack:\n\n```\n%s\n```\n\n" +
 	"Runtime:\n\n```\n%s\n```\n\n" +
-	"Version:\n\n```\n%s\n```\n"
+	"Version:\n\n```\n%s\nhub version %s\n```\n"
 
 func reportTitleAndBody(reportedError error, stack string) (title, body string, err error) {
 	errType := reflect.TypeOf(reportedError).String()
-	fullVersion, _ := version.FullVersion()
+	gitVersion, gitErr := git.Version()
+	if gitErr != nil {
+		gitVersion = "git unavailable!"
+	}
 	message := fmt.Sprintf(
 		crashReportTmpl,
 		reportedError,
 		errType,
 		reportedError,
 		stack,
 		runtimeInfo(),
-		fullVersion,
+		gitVersion,
+		version.Version,
 	)
 
 	messageBuilder := &MessageBuilder{

version/version.go

@@ -1,17 +1,4 @@
 package version
 
-import (
-	"fmt"
-
-	"github.com/github/hub/git"
-)
-
+// Version represents the hub version number
 var Version = "2.13.0"
-
-func FullVersion() (string, error) {
-	gitVersion, err := git.Version()
-	if err != nil {
-		gitVersion = "git version (unavailable)"
-	}
-	return fmt.Sprintf("%s\nhub version %s", gitVersion, Version), err
-}