email-local-part := has the syntax of a valid git ref name
without any '@' or '/' or ','
+
+Patch specification semantics:
+
+ * Calling context provides a scope, which restricts the set of
+ possible patches.
+ * If no email address in spec, look for patches in that set whose email
+ address is the same as the user's email address.
+ * ... ???
+
Search algorithm:
1. prefer patches with email address (or domain)
matching current patch
ijackson@/reorg/sponge
ijackson@/2012/reorg/sponge
ijackson@chiark.greenend.org.uk/reorg/sponge
+
+
+Other notes re searching and patch identification:
+
+
+??? if using series defined by tips, how to stop other people stealing
+ our tips -
+
+have a way to limit refs pull by email address have a way to limit
+head overlappingness by email address pairs, stops other people
+extending your series
+
+series name in each patch ? some patches marked as definitely series tip ?
+