--- a/hgext3rd/evolve/cmdrewrite.py	Tue Aug 21 12:14:04 2018 +0200
+++ b/hgext3rd/evolve/cmdrewrite.py	Tue Aug 21 12:13:28 2018 +0200
@@ -954,11 +954,10 @@
 def cmdprune(ui, repo, *revs, **opts):
     """mark changesets as obsolete or succeeded by another changeset
 
-    Pruned changesets are obsolete with no successors. If they also have no
-    descendants, they are hidden (invisible to all commands).
-
-    Non-obsolete descendants of pruned changesets become "unstable". Use :hg:`evolve`
-    to handle this situation.
+    Pruning changesets marks them obsolete, hiding them from the
+    history log, provided they have no descendants. Otherwise, all
+    such descendants that aren't themselves obsolete become
+    "unstable". Use :hg:`evolve` to handle this situation.
 
     When you prune the parent of your working copy, Mercurial updates the working
     copy to a non-obsolete parent.