the file should stop getting loaded after one syntax error:

    i6 : load "/tmp/foo.m2"
    /tmp/foo.m2:1:10:(2):[5]: syntax error
    /tmp/foo.m2:2:17:(2):[5]: syntax error
    /tmp/foo.m2:3:19:(2):[5]: syntax error
    /tmp/foo.m2:4:19:(2):[5]: syntax error
    /tmp/foo.m2:5:19:(2):[5]: syntax error
    /tmp/foo.m2:6:21:(2):[5]: syntax error

this must be due to a recent change
