Replace String#format() with string interpolation.

src/main/scala/app/AccountController.scala

@@ -76,7 +76,7 @@ trait AccountControllerBase extends AccountManagementControllerBase with FlashMa
 
       updateImage(userName, form.fileId, form.clearImage)
       flash += "info" -> "Account information has been updated."
-      redirect("/%s/_edit".format(userName))
+      redirect(s"/${userName}/_edit")
 
     } getOrElse NotFound
   })

src/main/scala/app/IndexController.scala

@@ -9,10 +9,13 @@ trait IndexControllerBase extends ControllerBase { self: RepositoryService
   with SystemSettingsService with ActivityService =>
   
   get("/"){
+    val loginAccount = context.loginAccount
+
     html.index(getRecentActivities(),
-      getAccessibleRepositories(context.loginAccount, baseUrl),
+      getAccessibleRepositories(loginAccount, baseUrl),
       loadSystemSettings(),
-      context.loginAccount.map{ account => getRepositoryNamesOfUser(account.userName) }.getOrElse(Nil))
+      loginAccount.map{ account => getRepositoryNamesOfUser(account.userName) }.getOrElse(Nil)
+    )
   }
 
 }

src/main/scala/app/LabelsController.scala

@@ -24,7 +24,7 @@ trait LabelsControllerBase extends ControllerBase {
 
   post("/:owner/:repository/issues/label/new", newForm)(collaboratorsOnly { (form, repository) =>
     createLabel(repository.owner, repository.name, form.labelName, form.color.substring(1))
-    redirect("/%s/%s/issues".format(repository.owner, repository.name))
+    redirect(s"/${repository.owner}/${repository.name}/issues")
   })
 
   ajaxGet("/:owner/:repository/issues/label/edit")(collaboratorsOnly { repository =>
@@ -53,9 +53,9 @@ trait LabelsControllerBase extends ControllerBase {
   private def labelName: Constraint = new Constraint(){
     def validate(name: String, value: String): Option[String] =
       if(!value.matches("^[^,]+$")){
-        Some("%s contains invalid character.".format(name))
+        Some(s"${name} contains invalid character.")
       } else if(value.startsWith("_") || value.startsWith("-")){
-        Some("%s starts with invalid character.".format(name))
+        Some(s"${name} starts with invalid character.")
       } else {
         None
       }

src/main/scala/app/MilestonesController.scala

@@ -35,7 +35,7 @@ trait MilestonesControllerBase extends ControllerBase {
 
   post("/:owner/:repository/issues/milestones/new", milestoneForm)(collaboratorsOnly { (form, repository) =>
     createMilestone(repository.owner, repository.name, form.title, form.description, form.dueDate)
-    redirect("/%s/%s/issues/milestones".format(repository.owner, repository.name))
+    redirect(s"/${repository.owner}/${repository.name}/issues/milestones")
   })
 
   get("/:owner/:repository/issues/milestones/:milestoneId/edit")(collaboratorsOnly { repository =>
@@ -45,28 +45,28 @@ trait MilestonesControllerBase extends ControllerBase {
   post("/:owner/:repository/issues/milestones/:milestoneId/edit", milestoneForm)(collaboratorsOnly { (form, repository) =>
     getMilestone(repository.owner, repository.name, params("milestoneId").toInt).map { milestone =>
       updateMilestone(milestone.copy(title = form.title, description = form.description, dueDate = form.dueDate))
-      redirect("/%s/%s/issues/milestones".format(repository.owner, repository.name))
+      redirect(s"/${repository.owner}/${repository.name}/issues/milestones")
     } getOrElse NotFound
   })
 
   get("/:owner/:repository/issues/milestones/:milestoneId/close")(collaboratorsOnly { repository =>
     getMilestone(repository.owner, repository.name, params("milestoneId").toInt).map { milestone =>
       closeMilestone(milestone)
-      redirect("/%s/%s/issues/milestones".format(repository.owner, repository.name))
+      redirect(s"/${repository.owner}/${repository.name}/issues/milestones")
     } getOrElse NotFound
   })
 
   get("/:owner/:repository/issues/milestones/:milestoneId/open")(collaboratorsOnly { repository =>
     getMilestone(repository.owner, repository.name, params("milestoneId").toInt).map { milestone =>
       openMilestone(milestone)
-      redirect("/%s/%s/issues/milestones".format(repository.owner, repository.name))
+      redirect(s"/${repository.owner}/${repository.name}/issues/milestones")
     } getOrElse NotFound
   })
 
   get("/:owner/:repository/issues/milestones/:milestoneId/delete")(collaboratorsOnly { repository =>
     getMilestone(repository.owner, repository.name, params("milestoneId").toInt).map { milestone =>
       deleteMilestone(repository.owner, repository.name, milestone.milestoneId)
-      redirect("/%s/%s/issues/milestones".format(repository.owner, repository.name))
+      redirect(s"/${repository.owner}/${repository.name}/issues/milestones")
     } getOrElse NotFound
   })
 

src/main/scala/app/RepositorySettingsController.scala

@@ -31,7 +31,7 @@ trait RepositorySettingsControllerBase extends ControllerBase with FlashMapSuppo
    * Redirect to the Options page.
    */
   get("/:owner/:repository/settings")(ownerOnly { repository =>
-    redirect("/%s/%s/settings/options".format(repository.owner, repository.name))
+    redirect(s"/${repository.owner}/${repository.name}/settings/options")
   })
   
   /**
@@ -47,7 +47,7 @@ trait RepositorySettingsControllerBase extends ControllerBase with FlashMapSuppo
   post("/:owner/:repository/settings/options", optionsForm)(ownerOnly { (form, repository) =>
     saveRepositoryOptions(repository.owner, repository.name, form.description, form.defaultBranch, form.isPrivate)
     flash += "info" -> "Repository settings has been updated."
-    redirect("/%s/%s/settings/options".format(repository.owner, repository.name))
+    redirect(s"/${repository.owner}/${repository.name}/settings/options")
   })
   
   /**
@@ -70,7 +70,7 @@ trait RepositorySettingsControllerBase extends ControllerBase with FlashMapSuppo
    */
   post("/:owner/:repository/settings/collaborators/add", collaboratorForm)(ownerOnly { (form, repository) =>
     addCollaborator(repository.owner, repository.name, form.userName)
-    redirect("/%s/%s/settings/collaborators".format(repository.owner, repository.name))
+    redirect(s"/${repository.owner}/${repository.name}/settings/collaborators")
   })
 
   /**
@@ -78,7 +78,7 @@ trait RepositorySettingsControllerBase extends ControllerBase with FlashMapSuppo
    */
   get("/:owner/:repository/settings/collaborators/remove")(ownerOnly { repository =>
     removeCollaborator(repository.owner, repository.name, params("name"))
-    redirect("/%s/%s/settings/collaborators".format(repository.owner, repository.name))
+    redirect(s"/${repository.owner}/${repository.name}/settings/collaborators")
   })
 
   /**
@@ -98,7 +98,7 @@ trait RepositorySettingsControllerBase extends ControllerBase with FlashMapSuppo
     FileUtils.deleteDirectory(getWikiRepositoryDir(repository.owner, repository.name))
     FileUtils.deleteDirectory(getTemporaryDir(repository.owner, repository.name))
 
-    redirect("/%s".format(repository.owner))
+    redirect(s"/${repository.owner}")
   })
 
   /**

src/main/scala/app/WikiController.scala

@@ -32,7 +32,7 @@ trait WikiControllerBase extends ControllerBase {
   get("/:owner/:repository/wiki")(referrersOnly { repository =>
     getWikiPage(repository.owner, repository.name, "Home").map { page =>
       wiki.html.page("Home", page, repository, hasWritePermission(repository.owner, repository.name, context.loginAccount))
-    } getOrElse redirect("/%s/%s/wiki/Home/_edit".format(repository.owner, repository.name))
+    } getOrElse redirect(s"/${repository.owner}/${repository.name}/wiki/Home/_edit")
   })
   
   get("/:owner/:repository/wiki/:page")(referrersOnly { repository =>
@@ -40,7 +40,7 @@ trait WikiControllerBase extends ControllerBase {
 
     getWikiPage(repository.owner, repository.name, pageName).map { page =>
       wiki.html.page(pageName, page, repository, hasWritePermission(repository.owner, repository.name, context.loginAccount))
-    } getOrElse redirect("/%s/%s/wiki/%s/_edit".format(repository.owner, repository.name, pageName)) // TODO URLEncode
+    } getOrElse redirect(s"/${repository.owner}/${repository.name}/wiki/${pageName}/_edit") // TODO URLEncode
   })
   
   get("/:owner/:repository/wiki/:page/_history")(referrersOnly { repository =>
@@ -82,7 +82,7 @@ trait WikiControllerBase extends ControllerBase {
     updateLastActivityDate(repository.owner, repository.name)
     recordEditWikiPageActivity(repository.owner, repository.name, loginAccount.userName, form.pageName)
 
-    redirect("/%s/%s/wiki/%s".format(repository.owner, repository.name, form.pageName))
+    redirect(s"/${repository.owner}/${repository.name}/wiki/${form.pageName}")
   })
   
   get("/:owner/:repository/wiki/_new")(collaboratorsOnly {
@@ -98,16 +98,16 @@ trait WikiControllerBase extends ControllerBase {
     updateLastActivityDate(repository.owner, repository.name)
     recordCreateWikiPageActivity(repository.owner, repository.name, loginAccount.userName, form.pageName)
 
-    redirect("/%s/%s/wiki/%s".format(repository.owner, repository.name, form.pageName))
+    redirect(s"/${repository.owner}/${repository.name}/wiki/${form.pageName}")
   })
   
   get("/:owner/:repository/wiki/:page/_delete")(collaboratorsOnly { repository =>
     val pageName = params("page")
     
-    deleteWikiPage(repository.owner, repository.name, pageName, context.loginAccount.get.userName, "Delete %s".format(pageName))
+    deleteWikiPage(repository.owner, repository.name, pageName, context.loginAccount.get.userName, s"Delete ${pageName}")
     updateLastActivityDate(repository.owner, repository.name)
 
-    redirect("/%s/%s/wiki".format(repository.owner, repository.name))
+    redirect(s"/${repository.owner}/${repository.name}/wiki")
   })
   
   get("/:owner/:repository/wiki/_pages")(referrersOnly { repository =>