$ mkdir patches

$ echo foo > foo.orig
$ echo foo2 > foo
$ echo bar > bar.orig
$ echo bar2 > bar
$ diff -u foo.orig foo >> patches/foorab.diff
$ diff -u bar bar.orig >> patches/foorab.diff
$ mv foo.orig foo
$ mv bar.orig bar
$ echo foorab.diff -p0 > patches/series
$ quilt push
> Applying patch patches/foorab.diff
> patching file foo
> patching file bar
> Hunk #1 FAILED at 1.
> 1 out of 1 hunk FAILED -- rejects in file bar
> Patch patches/foorab.diff does not apply (enforce with -f)

$ quilt push
> Applying patch patches/foorab.diff
> patching file foo
> patching file bar
> Hunk #1 FAILED at 1.
> 1 out of 1 hunk FAILED -- rejects in file bar
> Patch patches/foorab.diff does not apply (enforce with -f)

$ quilt push -qf
> Applying patch patches/foorab.diff
> 1 out of 1 hunk FAILED -- saving rejects to file bar.rej
> Applied patch patches/foorab.diff (forced; needs refresh)

$ quilt diff
> Index: foo
> ===================================================================
> --- foo.orig
> +++ foo
> @@ -1 +1 @@
> -foo
> +foo2