--- a/hgext3rd/evolve/cmdrewrite.py	Thu Sep 12 12:35:42 2019 +0200
+++ b/hgext3rd/evolve/cmdrewrite.py	Tue Sep 24 12:42:27 2019 +0200
@@ -762,14 +762,6 @@
         ui.write_err(_(b'single revision specified, nothing to fold\n'))
         return 1
 
-    if not ui.configbool(b'experimental', b'evolution.allowdivergence'):
-        for rev in revs:
-            if repo[rev].obsolete():
-                msg = _(b'folding obsolete revisions may cause divergence')
-                hint = _(b'set experimental.evolution.allowdivergence=yes'
-                         b' to allow folding them')
-                raise error.Abort(msg, hint=hint)
-
     # Sort so combined commit message of `hg fold --exact -r . -r .^` is
     # in topological order.
     revs.sort()
@@ -1013,6 +1005,12 @@
     ``--pair`` option to pair the pruned precursor and successor changesets.
     This is commonly useful for resolving history divergence, or when someone
     else edits history without obsolescence enabled.
+
+    .. container:: verbose
+
+        ``hg prune A::B -s C::D --pair`` will mark all revisions in the A::B
+        range as superseded by the revisions in C::D. Both revsets need to have
+        the same number of changesets.
     """
     _checknotesize(ui, opts)
     revs = scmutil.revrange(repo, list(revs) + opts.get('rev'))