Some tools (powerbuilder,qlick) replace CR and LF with space, so one line comment

in the script could alter the command.

Running the script in sql2000 I get 1,3,4 but in sql2005 + sp I get 1,2,3,4.

Running script in PowerBuilder I get just a comment

-- comment 1 print 1 -- comment 2 print 2, etc.