git-debrebase: Improve error messages for bad options.

[dgit.git] / git-debrebase.1.pod

diff --git a/git-debrebase.1.pod b/git-debrebase.1.pod
index d67e5570452d699851564860cc1a2e980d6ef718..b15bf00c1c88f233fa569f38a693e0cca4d5523d 100644 (file)
--- a/git-debrebase.1.pod
+++ b/git-debrebase.1.pod
@@ -250,6 +250,8 @@ the gbp upstream branch, if there is one.
 It is a snag if it is not an ancestor of HEAD,
 or if the history between the upstream and HEAD
 contains commits which make changes to upstream files.
+If it is not specified,
+the same algorithm is used as for git-debrebase new-upstream.
 
 It is also a snag if the specified upstream
 has a debian/ subdirectory.
@@ -265,6 +267,10 @@ your new git-debrebase view is appropriately fast forward.
 The result is a well-formed git-debrebase interchange branch.
 The result is also fast-forward from the gbp branch.
 
+It is a snag if the new branch looks like it will have diverged,
+just as for a laundering/unstitching call to git-debrebase;
+See L</Establish the current branch's ffq-prev>, below.
+
 Note that it is dangerous not to know whether you are
 dealing with a gbp patches-unappled branch containing quilt patches,
 or a git-debrebase interchange branch.