fixed bad error msg

git-svn-id: http://biopieces.googlecode.com/svn/trunk@1835 74ccb610-7750-0410-82ae-013aeee3265d

diff --git a/code_ruby/lib/maasha/seq/backtrack.rb b/code_ruby/lib/maasha/seq/backtrack.rb
index 896fe091100d506cecd5b2f7c0cab1f08ba93b2e..028d0fe905e4813094fca6ffeb3a1c26c8daa1ed 100644 (file)
--- a/code_ruby/lib/maasha/seq/backtrack.rb
+++ b/code_ruby/lib/maasha/seq/backtrack.rb
@@ -57,7 +57,7 @@ module BackTrack
   # matches are returned in an Array of Match objects.
   def patscan(pattern, offset = 0, max_mismatches = 0, max_insertions = 0, max_deletions = 0)
     raise BackTrackError, "Bad pattern: #{pattern}"                                          unless pattern.downcase =~ OK_PATTERN
-    raise BackTrackError, "offset: #{offset} out of range (0 ... #{self.length - 1})"        unless (0 ... self.length).include? offset
+    raise BackTrackError, "offset: #{offset} out of range (0 ... #{self.length})"            unless (0 ... self.length).include? offset
     raise BackTrackError, "max_mismatches: #{max_mismatches} out of range (0 .. #{MAX_MIS})" unless (0 .. MAX_MIS).include? max_mismatches
     raise BackTrackError, "max_insertions: #{max_insertions} out of range (0 .. #{MAX_INS})" unless (0 .. MAX_INS).include? max_insertions
     raise BackTrackError, "max_deletions: #{max_deletions} out of range (0 .. #{MAX_DEL})"   unless (0 .. MAX_DEL).include? max_deletions