print 1
GO--comment1
GO --comment2
GO 1--comment3
:setvar a --
:setvar b c--notcomment
:setvar d e --comment
:setvar f /*notcomment*/
:setvar g h--notcomment --comment
:setvar j k--notcomment--notcomment
:setvar a-- b--
:r input-2.txt --comment
-- next line will error in parser
:r --comment.txt
:on error exit--comment
:on error exit --comment