Make sequence number on hg export start at 1 (as documented for %n). Add test.

Make sequence number on hg export start at 1 (as documented for %n). Add test.

--- a/mercurial/patch.py	Thu Dec 14 19:30:18 2006 +0100
+++ b/mercurial/patch.py	Fri Dec 15 19:09:10 2006 +0100
@@ -656,7 +656,7 @@
             fp.close()
 
     for seqno, cset in enumerate(revs):
-        single(cset, seqno, fp)
+        single(cset, seqno+1, fp)
 
 def diffstat(patchlines):
     fd, name = tempfile.mkstemp(prefix="hg-patchbomb-", suffix=".txt")

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-export	Fri Dec 15 19:09:10 2006 +0100
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+hg init repo
+cd repo
+touch foo
+hg add foo
+for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
+    echo "foo-$i" >> foo
+    hg ci -m "foo-$i" -d "0 0"
+done
+
+for out in "%nof%N" "%%%H" "%b-%R" "%h" "%r"; do
+    echo "# foo-$out.patch"
+    hg export -v -o "foo-$out.patch" 2:tip
+done

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-export.out	Fri Dec 15 19:09:10 2006 +0100
@@ -0,0 +1,60 @@
+# foo-%nof%N.patch
+exporting patches:
+foo-01of10.patch
+foo-02of10.patch
+foo-03of10.patch
+foo-04of10.patch
+foo-05of10.patch
+foo-06of10.patch
+foo-07of10.patch
+foo-08of10.patch
+foo-09of10.patch
+foo-10of10.patch
+# foo-%%%H.patch
+exporting patches:
+foo-%617188a1c80f869a7b66c85134da88a6fb145f67.patch
+foo-%dd41a5ff707a5225204105611ba49cc5c229d55f.patch
+foo-%f95a5410f8664b6e1490a4af654e4b7d41a7b321.patch
+foo-%4346bcfde53b4d9042489078bcfa9c3e28201db2.patch
+foo-%afda8c3a009cc99449a05ad8aa4655648c4ecd34.patch
+foo-%35284ce2b6b99c9d2ac66268fe99e68e1974e1aa.patch
+foo-%9688c41894e6931305fa7165a37f6568050b4e9b.patch
+foo-%747d3c68f8ec44bb35816bfcd59aeb50b9654c2f.patch
+foo-%5f17a83f5fbd9414006a5e563eab4c8a00729efd.patch
+foo-%f3acbafac161ec68f1598af38f794f28847ca5d3.patch
+# foo-%b-%R.patch
+exporting patches:
+foo-repo-2.patch
+foo-repo-3.patch
+foo-repo-4.patch
+foo-repo-5.patch
+foo-repo-6.patch
+foo-repo-7.patch
+foo-repo-8.patch
+foo-repo-9.patch
+foo-repo-10.patch
+foo-repo-11.patch
+# foo-%h.patch
+exporting patches:
+foo-617188a1c80f.patch
+foo-dd41a5ff707a.patch
+foo-f95a5410f866.patch
+foo-4346bcfde53b.patch
+foo-afda8c3a009c.patch
+foo-35284ce2b6b9.patch
+foo-9688c41894e6.patch
+foo-747d3c68f8ec.patch
+foo-5f17a83f5fbd.patch
+foo-f3acbafac161.patch
+# foo-%r.patch
+exporting patches:
+foo-00000000000000000002.patch
+foo-00000000000000000003.patch
+foo-00000000000000000004.patch
+foo-00000000000000000005.patch
+foo-00000000000000000006.patch
+foo-00000000000000000007.patch
+foo-00000000000000000008.patch
+foo-00000000000000000009.patch
+foo-00000000000000000010.patch
+foo-00000000000000000011.patch