pull default name/email for commits from wiki repo's git config

lib/gollum/frontend/app.rb

@@ -58,7 +58,7 @@ module Precious
       format = params[:format].intern
       name   = params[:rename] if params[:rename]
 
-      wiki.update_page(page, name, format, params[:content], commit_message(wiki))
+      wiki.update_page(page, name, format, params[:content], commit_message)
 
       redirect "/#{Gollum::Page.cname name}"
     end
@@ -70,7 +70,7 @@ module Precious
       format = params[:format].intern
 
       begin
-        wiki.write_page(name, format, params[:content], commit_message(wiki))
+        wiki.write_page(name, format, params[:content], commit_message)
         redirect "/#{name}"
       rescue Gollum::DuplicatePageError => e
         @message = "Duplicate page: #{e.message}"
@@ -149,10 +149,8 @@ module Precious
       end
     end
 
-    def commit_message(wiki)
-      { :message => params[:message],
-        :name    => wiki.repo.config['user.name'],
-        :email   => wiki.repo.config['user.email'] }
+    def commit_message
+      { :message => params[:message] }
     end
   end
 end

lib/gollum/wiki.rb

@@ -441,11 +441,23 @@ module Gollum
     #
     # Returns the commit Hash
     def normalize_commit(commit = {})
-      commit[:name]   = self.class.default_committer_name  if commit[:name].to_s.empty?
-      commit[:email]  = self.class.default_committer_email if commit[:email].to_s.empty?
+      commit[:name]  = default_committer_name  if commit[:name].to_s.empty?
+      commit[:email] = default_committer_email if commit[:email].to_s.empty?
       commit
     end
 
+    # Gets the default name for commits.
+    def default_committer_name
+      @default_committer_name ||= \
+        @repo.config['user.name'] || self.class.default_committer_name
+    end
+
+    # Gets the default email for commits.
+    def default_committer_email
+      @default_committer_email ||= \
+        @repo.config['user.email'] || self.class.default_committer_email
+    end
+
     # Finds a full listing of files and their blob SHA for a given ref.  Each
     # listing is cached based on its actual commit SHA.
     #