# foo.pl
print "this is a "syntax" error";

# test.pl
eval q{
    my $fl = "foo.pl";
    require "$fl";
};

__output__

Bareword found where operator expected at foo.pl line 1, near ""this is a "syntax"
        (Missing operator before syntax?)
String found where operator expected at foo.pl line 1, near "syntax" error""