PATCHES
diff generation
For mercurial users:
cd surf-directory
hg diff > surf-X.Y-yourpatchname.diff
For tarballs:
cd modified-surf-directory/..
diff -up original-surf-directory modified-surf-directory > surf-X.Y-yourpatchname.diff
where X.Y is a surf tag name or version number.
patch application
For mercurial users:
cd surf-directory
hg patch path/to/patch.diff
For tarballs:
cd surf-directory
patch -p1 < path/to/patch.diff