fix comment

diff --git a/tests/misc/tty-eof b/tests/misc/tty-eof
index 075a127171fee430e926d447c8ad152980ff595c..75a86be06c6639daef942414d3c577881f44e33a 100755 (executable)
--- a/tests/misc/tty-eof
+++ b/tests/misc/tty-eof
@@ -13,6 +13,8 @@ esac
 exec $PERL -w -- - <<\EOF
 
 # Ensure that cat exits upon a single EOF (^D) from a tty.
+# Do the same for all programs that can read stdin,
+# requiring no arguments and that write to standard output.
 use strict;
 
 (my $ME = $0) =~ s|.*/||;