--- a/mercurial/obsolete.py	Fri Sep 20 21:31:58 2024 -0400
+++ b/mercurial/obsolete.py	Mon Jul 08 22:46:04 2024 +0200
@@ -773,10 +773,11 @@
             _addchildren(self.children, markers)
         _checkinvalidmarkers(self.repo, markers)
 
-    def relevantmarkers(self, nodes):
-        """return a set of all obsolescence markers relevant to a set of nodes.
+    def relevantmarkers(self, nodes=None, revs=None):
+        """return a set of all obsolescence markers relevant to a set of
+        nodes or revisions.
 
-        "relevant" to a set of nodes mean:
+        "relevant" to a set of nodes or revisions mean:
 
         - marker that use this changeset as successor
         - prune marker of direct children on this changeset
@@ -784,13 +785,33 @@
           markers
 
         It is a set so you cannot rely on order."""
+        if nodes is None:
+            nodes = set()
+        if revs is None:
+            revs = set()
 
-        pendingnodes = set(nodes)
-        seenmarkers = set()
-        seennodes = set(pendingnodes)
+        tonode = self.repo.unfiltered().changelog.node
+        pendingnodes = set()
         precursorsmarkers = self.predecessors
         succsmarkers = self.successors
         children = self.children
+        for node in nodes:
+            if (
+                node in precursorsmarkers
+                or node in succsmarkers
+                or node in children
+            ):
+                pendingnodes.add(node)
+        for rev in revs:
+            node = tonode(rev)
+            if (
+                node in precursorsmarkers
+                or node in succsmarkers
+                or node in children
+            ):
+                pendingnodes.add(node)
+        seenmarkers = set()
+        seennodes = pendingnodes.copy()
         while pendingnodes:
             direct = set()
             for current in pendingnodes: