diff --git a/lib/timecost/cli.rb b/lib/timecost/cli.rb
index de2183b..fad7298 100644
--- a/lib/timecost/cli.rb
+++ b/lib/timecost/cli.rb
@@ -16,7 +16,7 @@ module TimeCost
 
 				:verbose => false
 			}
-			@rangelist = nil
+			@rangelist = {}
 			@authorlist = nil
 		end
 
@@ -81,7 +81,7 @@ module TimeCost
 					   "--","."]
 
 
-			@rangelist = RangeList.new
+			@rangelist = {}
 			commit = nil
 			loop do
 				line = process.gets
@@ -96,7 +96,11 @@ module TimeCost
 					# merge ranges & push
 					unless commit.nil? then
 						range = Range.new @config, commit
-						@rangelist.add range
+
+						if not @rangelist.include? commit.author then
+							@rangelist[commit.author] = RangeList.new
+						end
+						@rangelist[commit.author].add range
 					end
 					commit = Commit.new id
 					# puts "commit #{id}"
@@ -110,6 +114,7 @@ module TimeCost
 							commit = nil
 							# reject
 						end
+
 					end
 
 				when /^Date:\s*(.*?)\s*$/ then
@@ -170,10 +175,17 @@ module TimeCost
 		def report
 			return if not @config[:output_dump].nil?
 
-			@rangelist.each do |r|
-				puts r.to_s + "\n"
+			@rangelist.each do |author,rangelist|
+				rangelist.each do |range|
+					puts range.to_s + "\n"
+				end
 			end
-			puts "TOTAL: %.2f hours" % @rangelist.sum
+			total = 0
+			@rangelist.each do |author,rangelist|
+				puts "SUB-TOTAL for %s: %.2f hours\n" % [author, rangelist.sum]
+				total += rangelist.sum
+			end
+			puts "TOTAL: %.2f hours" % total
 		end
 	end
 end
diff --git a/lib/timecost/range.rb b/lib/timecost/range.rb
index b3b3a8b..627d69f 100644
--- a/lib/timecost/range.rb
+++ b/lib/timecost/range.rb
@@ -97,12 +97,12 @@ module TimeCost
 		end
 
 		def to_s 
-			val = "(%s) %s - %s\n" % [diff, fixed_start, @time_stop]	
+			val = "(%s)\t%s - %s\n" % [diff, fixed_start, @time_stop]	
+			unless @config[:author_filter_enable] then
+				val += "\tby %s\n" % @commits.first.author
+			end
 			@commits.each do |commit|
 				lines = []
-				unless @config[:author_filter_enable] then
-					lines.push commit.author
-				end
 				lines.concat commit.note.split(/\n/)
 				r = lines.map{ |s| "\t  %s" % s }.join "\n"
 				r[1] = '*'
diff --git a/timecost.gemspec b/timecost.gemspec
index a0803f0..b244ab5 100644
--- a/timecost.gemspec
+++ b/timecost.gemspec
@@ -10,7 +10,7 @@ Gem::Specification.new do |spec|
   spec.email         = ["glenux@glenux.net"]
   spec.summary       = %q{Use GIT logs to give an estimation of spent time & costs of your projects.}
   spec.description   = %q{Use GIT logs to give an estimation of spent time & costs of your projects.}
-  spec.homepage      = "https//github.com/glenux/git-timecost"
+  spec.homepage      = "https://github.com/glenux/git-timecost"
   spec.license       = "MIT"
 
   spec.files         = `git ls-files -z`.split("\x0")