Make migration generator only report on exact duplicate names, not partial...

Make migration generator only report on exact duplicate names, not partial dupliate names. Closes #3442.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3413 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/CHANGELOG

 *SVN*
 
+* Make migration generator only report on exact duplicate names, not partial dupliate names. #3442 [jeremy@planetargon.com Marcel Molina Jr.]
+
 * Fix typo in mailer generator USAGE. #3458 [chriztian.steinmeier@gmail.com]
 
 * Ignore version mismatch between pg_dump and the database server. #3457 [simon.stapleton@gmail.com]

railties/lib/rails_generator/commands.rb

@@ -61,7 +61,7 @@ def migration_directory(relative_path)
           end
 
           def existing_migrations(file_name)
-            Dir.glob("#{@migration_directory}/[0-9]*_#{file_name}.rb")
+            Dir.glob("#{@migration_directory}/[0-9]*_*.rb").grep(/[0-9]+_#{file_name}.rb$/)
           end
 
           def migration_exists?(file_name)