Should nginx ignore those blank lines (lines with spaces only) in config?

I tried below in the config of nginx 1.14.0:

server {
....

set $testvar1 "testval1";
.... 300 blank lines, each with 20 spaces ...
set $testvar2 "testval2";

....
}

nginx configtest says:
nginx: [emerg] too long parameter "
...." started in


Thanks!
Frank
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