lib/tailog.rb in tailog-0.1.1 vs lib/tailog.rb in tailog-0.1.2

@@ -3,26 +3,23 @@
 
 class File
 
   def tail(n)
     buffer = 1024
-    idx = (size - buffer).abs
+    idx = size > buffer ? size - buffer : 0
     chunks = []
     lines = 0
 
     begin
       seek(idx)
       chunk = read(buffer)
       break unless chunk
       lines += chunk.count("\n")
       chunks.unshift chunk
       idx -= buffer
-    end while lines < ( n + 1 ) && pos != 0
+    end while lines < ( n + 1 ) && idx >= 0
 
-    tail_of_file = chunks.join('')
-    ary = tail_of_file.split(/\n/)
-    lines_to_return = ary[ ary.size - n, ary.size - 1 ]
-
+    chunks.join('').split(/\n/).last(n)
   end
 end
 
 module Tailog