Add example how to test blhc ignore string without a rebuild

Thanks to Eriberto Mota for the suggestion.

diff --git a/bin/blhc b/bin/blhc
index 2c51ce4d09ae59384c2f2a03315867e827c9a132..b4fbbdacb1eed2492e3c6bb8607ad381671b9175 100755 (executable)
--- a/bin/blhc
+++ b/bin/blhc
@@ -1550,6 +1550,9 @@ you find false positives which affect more packages please report a bug.
 
 To generate this string simply use echo in C<debian/rules>; make sure to use @
 to suppress the echo command itself as it could also trigger a false positive.
+If the build process takes a long time edit the C<.build> file in place and
+tweak the ignore string until B<blhc --all --debian package.build> no longer
+reports any false positives.
 
 =head1 OPTIONS