Deletion of a blank line in source code which causes unexpected functionality [closed]

Question

Write a script that works fine when a blank line is present in the flow of program logic, but breaks or causes unexpected behaviour when that line is removed.

Avoid standard loopholes and stupid answers. Your program should do something "useful," even if all it does is add a few integers.

Removing an empty line from a multiline string doesn't count, unless the expected output from that multiline string shouldn't technically change (ie: if you're removing all blank lines matching ^$).

Whitespace foolery isn't allowed either; don't do weird things with carriage returns, tabs, spaces, etc.

Answer 1

AppleScript

say¬

quit

This code is absolutely meant to throw an error, as it matches (in compiler speak) to this:

¬
   say
quit

Which throws the error "Can’t make current application into type text."

However, if you delete the second line, you get the equivalent of this code:

say ¬
   (quit)

Which says nothing and attempts to close the current application (Script Editor or Terminal).

Answer 2

><>

This program

02.

v"?"o
;"!"o

outputs

?

and exits.

Removing the blank line cause it to output

!