--- a/mercurial/commands.py	Fri Mar 19 13:18:53 2021 +0100
+++ b/mercurial/commands.py	Fri Mar 19 23:16:09 2021 -0700
@@ -1107,9 +1107,8 @@
                     transition = b"bad"
                 state[transition].append(node)
                 ctx = repo[node]
-                ui.status(
-                    _(b'changeset %d:%s: %s\n') % (ctx.rev(), ctx, transition)
-                )
+                summary = cmdutil.format_changeset_summary(ui, ctx, b'bisect')
+                ui.status(_(b'changeset %s: %s\n') % (summary, transition))
                 hbisect.checkstate(state)
                 # bisect
                 nodes, changesets, bgood = hbisect.bisect(repo, state)
@@ -1125,15 +1124,15 @@
     nodes, changesets, good = hbisect.bisect(repo, state)
     if extend:
         if not changesets:
-            extendnode = hbisect.extendrange(repo, state, nodes, good)
-            if extendnode is not None:
+            extendctx = hbisect.extendrange(repo, state, nodes, good)
+            if extendctx is not None:
                 ui.write(
-                    _(b"Extending search to changeset %d:%s\n")
-                    % (extendnode.rev(), extendnode)
+                    _(b"Extending search to changeset %s\n")
+                    % cmdutil.format_changeset_summary(ui, extendctx, b'bisect')
                 )
-                state[b'current'] = [extendnode.node()]
+                state[b'current'] = [extendctx.node()]
                 hbisect.save_state(repo, state)
-                return mayupdate(repo, extendnode.node())
+                return mayupdate(repo, extendctx.node())
         raise error.StateError(_(b"nothing to extend"))
 
     if changesets == 0:
@@ -1146,12 +1145,13 @@
         while size <= changesets:
             tests, size = tests + 1, size * 2
         rev = repo.changelog.rev(node)
+        summary = cmdutil.format_changeset_summary(ui, repo[rev], b'bisect')
         ui.write(
             _(
-                b"Testing changeset %d:%s "
+                b"Testing changeset %s "
                 b"(%d changesets remaining, ~%d tests)\n"
             )
-            % (rev, short(node), changesets, tests)
+            % (summary, changesets, tests)
         )
         state[b'current'] = [node]
         hbisect.save_state(repo, state)

--- a/tests/test-bisect.t	Fri Mar 19 13:18:53 2021 +0100
+++ b/tests/test-bisect.t	Fri Mar 19 23:16:09 2021 -0700
@@ -200,25 +200,25 @@
   update: (current)
   phases: 32 draft
   $ hg bisect -g 1
-  Testing changeset 16:a2e6ea4973e9 (30 changesets remaining, ~4 tests)
+  Testing changeset 16:a2e6ea4973e9 "msg 16" (30 changesets remaining, ~4 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
-  Testing changeset 23:5ec79163bff4 (15 changesets remaining, ~3 tests)
+  Testing changeset 23:5ec79163bff4 "msg 23" (15 changesets remaining, ~3 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 skip
 
   $ hg bisect -s
-  Testing changeset 24:10e0acd3809e (15 changesets remaining, ~3 tests)
+  Testing changeset 24:10e0acd3809e "msg 24" (15 changesets remaining, ~3 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
-  Testing changeset 27:288867a866e9 (7 changesets remaining, ~2 tests)
+  Testing changeset 27:288867a866e9 "msg 27" (7 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
-  Testing changeset 29:b5bd63375ab9 (4 changesets remaining, ~2 tests)
+  Testing changeset 29:b5bd63375ab9 "msg 29" (4 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -b
-  Testing changeset 28:8e0c2264c8af (2 changesets remaining, ~1 tests)
+  Testing changeset 28:8e0c2264c8af "msg 28" (2 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
   The first bad revision is:
@@ -234,7 +234,7 @@
   $ hg bisect -b "0::3"
   $ hg bisect -s "13::16"
   $ hg bisect -g "26::tip"
-  Testing changeset 12:1941b52820a5 (23 changesets remaining, ~4 tests)
+  Testing changeset 12:1941b52820a5 "msg 12" (23 changesets remaining, ~4 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat .hg/bisect.state
   bad b99c7b9c8e11558adef3fad9af211c58d46f325b
@@ -258,25 +258,25 @@
   $ hg bisect -r
   $ hg bisect -b null
   $ hg bisect -g tip
-  Testing changeset 15:e7fa0811edb0 (32 changesets remaining, ~5 tests)
+  Testing changeset 15:e7fa0811edb0 "msg 15" (32 changesets remaining, ~5 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
-  Testing changeset 7:03750880c6b5 (16 changesets remaining, ~4 tests)
+  Testing changeset 7:03750880c6b5 "msg 7" (16 changesets remaining, ~4 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 skip
 
   $ hg bisect -s
-  Testing changeset 6:a3d5c6fdf0d3 (16 changesets remaining, ~4 tests)
+  Testing changeset 6:a3d5c6fdf0d3 "msg 6" (16 changesets remaining, ~4 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
-  Testing changeset 2:db07c04beaca (7 changesets remaining, ~2 tests)
+  Testing changeset 2:db07c04beaca "msg 2" (7 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
-  Testing changeset 0:b99c7b9c8e11 (3 changesets remaining, ~1 tests)
+  Testing changeset 0:b99c7b9c8e11 "msg 0" (3 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -b
-  Testing changeset 1:5cd978ea5149 (2 changesets remaining, ~1 tests)
+  Testing changeset 1:5cd978ea5149 "msg 1" (2 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
   The first good revision is:
@@ -295,7 +295,7 @@
   $ hg bisect -r
   $ hg bisect -g null
   $ hg bisect -bU tip
-  Testing changeset 15:e7fa0811edb0 (32 changesets remaining, ~5 tests)
+  Testing changeset 15:e7fa0811edb0 "msg 15" (32 changesets remaining, ~5 tests)
   $ hg id
   5cd978ea5149
 
@@ -306,13 +306,13 @@
   $ hg bisect -r
   $ hg bisect -b 4
   $ hg bisect -g 0
-  Testing changeset 2:db07c04beaca (4 changesets remaining, ~2 tests)
+  Testing changeset 2:db07c04beaca "msg 2" (4 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
-  Testing changeset 1:5cd978ea5149 (4 changesets remaining, ~2 tests)
+  Testing changeset 1:5cd978ea5149 "msg 1" (4 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
-  Testing changeset 3:b53bea5e2fcb (4 changesets remaining, ~2 tests)
+  Testing changeset 3:b53bea5e2fcb "msg 3" (4 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
   Due to skipped revisions, the first bad revision could be any of:
@@ -343,7 +343,7 @@
   $ hg bisect -r
   $ hg bisect -g 0
   $ hg bisect -b 2
-  Testing changeset 1:5cd978ea5149 (2 changesets remaining, ~1 tests)
+  Testing changeset 1:5cd978ea5149 "msg 1" (2 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
   Due to skipped revisions, the first bad revision could be any of:
@@ -372,19 +372,19 @@
   $ hg bisect -r
   $ hg bisect -b 6
   $ hg bisect -g 0
-  Testing changeset 3:b53bea5e2fcb (6 changesets remaining, ~2 tests)
+  Testing changeset 3:b53bea5e2fcb "msg 3" (6 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
-  Testing changeset 2:db07c04beaca (6 changesets remaining, ~2 tests)
+  Testing changeset 2:db07c04beaca "msg 2" (6 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
-  Testing changeset 4:9b2ba8336a65 (6 changesets remaining, ~2 tests)
+  Testing changeset 4:9b2ba8336a65 "msg 4" (6 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
-  Testing changeset 1:5cd978ea5149 (6 changesets remaining, ~2 tests)
+  Testing changeset 1:5cd978ea5149 "msg 1" (6 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -s
-  Testing changeset 5:7874a09ea728 (6 changesets remaining, ~2 tests)
+  Testing changeset 5:7874a09ea728 "msg 5" (6 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
   The first bad revision is:
@@ -473,17 +473,17 @@
   $ hg bisect -r
   $ hg up -qr tip
   $ hg bisect --command "\"$PYTHON\" \"$TESTTMP/script.py\" and some parameters"
-  changeset 31:58c80a7c8a40: good
+  changeset 31:58c80a7c8a40 tip "msg 31": good
   abort: cannot bisect (no known bad revisions)
   [20]
   $ hg up -qr 0
   $ hg bisect --command "\"$PYTHON\" \"$TESTTMP/script.py\" and some parameters"
-  changeset 0:b99c7b9c8e11: bad
-  changeset 15:e7fa0811edb0: good
-  changeset 7:03750880c6b5: good
-  changeset 3:b53bea5e2fcb: bad
-  changeset 5:7874a09ea728: bad
-  changeset 6:a3d5c6fdf0d3: good
+  changeset 0:b99c7b9c8e11 "msg 0": bad
+  changeset 15:e7fa0811edb0 "msg 15": good
+  changeset 7:03750880c6b5 "msg 7": good
+  changeset 3:b53bea5e2fcb "msg 3": bad
+  changeset 5:7874a09ea728 "msg 5": bad
+  changeset 6:a3d5c6fdf0d3 "msg 6": good
   The first good revision is:
   changeset:   6:a3d5c6fdf0d3
   user:        test
@@ -510,13 +510,13 @@
   $ hg bisect -r
   $ hg bisect --good tip --noupdate
   $ hg bisect --bad 0 --noupdate
-  Testing changeset 15:e7fa0811edb0 (31 changesets remaining, ~4 tests)
+  Testing changeset 15:e7fa0811edb0 "msg 15" (31 changesets remaining, ~4 tests)
   $ hg bisect --command "sh \"$TESTTMP/script.sh\" and some params" --noupdate
-  changeset 15:e7fa0811edb0: good
-  changeset 7:03750880c6b5: good
-  changeset 3:b53bea5e2fcb: bad
-  changeset 5:7874a09ea728: bad
-  changeset 6:a3d5c6fdf0d3: good
+  changeset 15:e7fa0811edb0 "msg 15": good
+  changeset 7:03750880c6b5 "msg 7": good
+  changeset 3:b53bea5e2fcb "msg 3": bad
+  changeset 5:7874a09ea728 "msg 5": bad
+  changeset 6:a3d5c6fdf0d3 "msg 6": good
   The first good revision is:
   changeset:   6:a3d5c6fdf0d3
   user:        test
@@ -543,17 +543,17 @@
   $ hg bisect -r
   $ hg up -qr tip
   $ hg bisect --command "sh \"$TESTTMP/script.sh\" and some params"
-  changeset 31:58c80a7c8a40: good
+  changeset 31:58c80a7c8a40 tip "msg 31": good
   abort: cannot bisect (no known bad revisions)
   [20]
   $ hg up -qr 0
   $ hg bisect --command "sh \"$TESTTMP/script.sh\" and some params"
-  changeset 0:b99c7b9c8e11: bad
-  changeset 15:e7fa0811edb0: good
-  changeset 7:03750880c6b5: good
-  changeset 3:b53bea5e2fcb: bad
-  changeset 5:7874a09ea728: bad
-  changeset 6:a3d5c6fdf0d3: good
+  changeset 0:b99c7b9c8e11 "msg 0": bad
+  changeset 15:e7fa0811edb0 "msg 15": good
+  changeset 7:03750880c6b5 "msg 7": good
+  changeset 3:b53bea5e2fcb "msg 3": bad
+  changeset 5:7874a09ea728 "msg 5": bad
+  changeset 6:a3d5c6fdf0d3 "msg 6": good
   The first good revision is:
   changeset:   6:a3d5c6fdf0d3
   user:        test
@@ -586,13 +586,13 @@
   $ hg bisect --reset
   $ hg bisect --good 15
   $ hg bisect --bad 30
-  Testing changeset 22:06c7993750ce (15 changesets remaining, ~3 tests)
+  Testing changeset 22:06c7993750ce "msg 22" (15 changesets remaining, ~3 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect --command true
-  changeset 22:06c7993750ce: good
-  changeset 26:3efc6fd51aeb: good
-  changeset 28:8e0c2264c8af: good
-  changeset 29:b5bd63375ab9: good
+  changeset 22:06c7993750ce "msg 22": good
+  changeset 26:3efc6fd51aeb "msg 26": good
+  changeset 28:8e0c2264c8af "msg 28": good
+  changeset 29:b5bd63375ab9 "msg 29": good
   The first bad revision is:
   changeset:   30:ed2d2f24b11c
   tag:         tip
@@ -735,11 +735,11 @@
   $ hg bisect --reset
   $ hg bisect --good .
   $ hg bisect --bad 25
-  Testing changeset 28:8e0c2264c8af (6 changesets remaining, ~2 tests)
+  Testing changeset 28:8e0c2264c8af "msg 28" (6 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect --command true
-  changeset 28:8e0c2264c8af: good
-  changeset 26:3efc6fd51aeb: good
+  changeset 28:8e0c2264c8af "msg 28": good
+  changeset 26:3efc6fd51aeb "msg 26": good
   The first good revision is:
   changeset:   26:3efc6fd51aeb
   user:        test

--- a/tests/test-bisect2.t	Fri Mar 19 13:18:53 2021 +0100
+++ b/tests/test-bisect2.t	Fri Mar 19 23:16:09 2021 -0700
@@ -252,7 +252,7 @@
   $ hg bisect -r
   $ hg bisect -g 0
   $ hg bisect -b 17   # -> update to rev 6
-  Testing changeset 6:a214d5d3811a (15 changesets remaining, ~3 tests)
+  Testing changeset 6:a214d5d3811a "merge 4,5" (15 changesets remaining, ~3 tests)
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(pruned)'
   0:33b1f9bc8bc5
@@ -274,16 +274,16 @@
   16:609d82a7ebae
   $ hg log -q -r 'bisect(ignored)'
   $ hg bisect -g      # -> update to rev 13
-  Testing changeset 13:b0a32c86eb31 (9 changesets remaining, ~3 tests)
+  Testing changeset 13:b0a32c86eb31 "13" (9 changesets remaining, ~3 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -s      # -> update to rev 10
-  Testing changeset 10:429fcd26f52d (9 changesets remaining, ~3 tests)
+  Testing changeset 10:429fcd26f52d "merge 6,9" (9 changesets remaining, ~3 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -b      # -> update to rev 8
-  Testing changeset 8:dab8161ac8fc (3 changesets remaining, ~1 tests)
+  Testing changeset 8:dab8161ac8fc "8" (3 changesets remaining, ~1 tests)
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -g      # -> update to rev 9
-  Testing changeset 9:3c77083deb4a (2 changesets remaining, ~1 tests)
+  Testing changeset 9:3c77083deb4a "9" (2 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -b
   The first bad revision is:
@@ -350,10 +350,10 @@
   $ hg bisect -r
   $ hg bisect -g 18
   $ hg bisect -b 1    # -> update to rev 6
-  Testing changeset 6:a214d5d3811a (13 changesets remaining, ~3 tests)
+  Testing changeset 6:a214d5d3811a "merge 4,5" (13 changesets remaining, ~3 tests)
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -s      # -> update to rev 10
-  Testing changeset 10:429fcd26f52d (13 changesets remaining, ~3 tests)
+  Testing changeset 10:429fcd26f52d "merge 6,9" (13 changesets remaining, ~3 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(pruned)'
   0:33b1f9bc8bc5
@@ -361,7 +361,7 @@
   6:a214d5d3811a
   18:d42e18c7bc9b
   $ hg bisect -b      # -> update to rev 12
-  Testing changeset 12:9f259202bbe7 (5 changesets remaining, ~2 tests)
+  Testing changeset 12:9f259202bbe7 "12" (5 changesets remaining, ~2 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(pruned)'
   0:33b1f9bc8bc5
@@ -381,7 +381,7 @@
   13:b0a32c86eb31
   15:857b178a7cf3
   $ hg bisect -b      # -> update to rev 13
-  Testing changeset 13:b0a32c86eb31 (3 changesets remaining, ~1 tests)
+  Testing changeset 13:b0a32c86eb31 "13" (3 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -g
   The first good revision is:
@@ -414,7 +414,7 @@
   $ hg bisect -r
   $ hg bisect -g 1
   $ hg bisect -b 16   # -> update to rev 6
-  Testing changeset 6:a214d5d3811a (13 changesets remaining, ~3 tests)
+  Testing changeset 6:a214d5d3811a "merge 4,5" (13 changesets remaining, ~3 tests)
   2 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(pruned)'
   0:33b1f9bc8bc5
@@ -422,13 +422,13 @@
   16:609d82a7ebae
   17:228c06deef46
   $ hg bisect -g      # -> update to rev 13
-  Testing changeset 13:b0a32c86eb31 (8 changesets remaining, ~3 tests)
+  Testing changeset 13:b0a32c86eb31 "13" (8 changesets remaining, ~3 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -s      # -> update to rev 10
-  Testing changeset 10:429fcd26f52d (8 changesets remaining, ~3 tests)
+  Testing changeset 10:429fcd26f52d "merge 6,9" (8 changesets remaining, ~3 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -s      # -> update to rev 12
-  Testing changeset 12:9f259202bbe7 (8 changesets remaining, ~3 tests)
+  Testing changeset 12:9f259202bbe7 "12" (8 changesets remaining, ~3 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(pruned)'
   0:33b1f9bc8bc5
@@ -443,10 +443,10 @@
   16:609d82a7ebae
   17:228c06deef46
   $ hg bisect -g      # -> update to rev 9
-  Testing changeset 9:3c77083deb4a (5 changesets remaining, ~2 tests)
+  Testing changeset 9:3c77083deb4a "9" (5 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -s      # -> update to rev 15
-  Testing changeset 15:857b178a7cf3 (5 changesets remaining, ~2 tests)
+  Testing changeset 15:857b178a7cf3 "merge 10,13" (5 changesets remaining, ~2 tests)
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(ignored)'
   $ hg bisect -b
@@ -500,13 +500,13 @@
   $ hg bisect -r
   $ hg bisect -g 17
   $ hg bisect -b 8    # -> update to rev 10
-  Testing changeset 13:b0a32c86eb31 (8 changesets remaining, ~3 tests)
+  Testing changeset 13:b0a32c86eb31 "13" (8 changesets remaining, ~3 tests)
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -b      # -> update to rev 13
-  Testing changeset 10:429fcd26f52d (5 changesets remaining, ~2 tests)
+  Testing changeset 10:429fcd26f52d "merge 6,9" (5 changesets remaining, ~2 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect -b      # -> update to rev 15
-  Testing changeset 15:857b178a7cf3 (3 changesets remaining, ~1 tests)
+  Testing changeset 15:857b178a7cf3 "merge 10,13" (3 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(pruned)'
   0:33b1f9bc8bc5
@@ -524,7 +524,7 @@
   13:b0a32c86eb31
   17:228c06deef46
   $ hg bisect -s      # -> update to rev 16
-  Testing changeset 16:609d82a7ebae (3 changesets remaining, ~1 tests)
+  Testing changeset 16:609d82a7ebae "16" (3 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(pruned)'
   0:33b1f9bc8bc5
@@ -612,7 +612,7 @@
   $ hg bisect -r
   $ hg bisect -b 17
   $ hg bisect -g 11
-  Testing changeset 13:b0a32c86eb31 (5 changesets remaining, ~2 tests)
+  Testing changeset 13:b0a32c86eb31 "13" (5 changesets remaining, ~2 tests)
   3 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(ignored)'
   2:051e12f87bf1
@@ -623,7 +623,7 @@
   9:3c77083deb4a
   10:429fcd26f52d
   $ hg bisect -g
-  Testing changeset 15:857b178a7cf3 (3 changesets remaining, ~1 tests)
+  Testing changeset 15:857b178a7cf3 "merge 10,13" (3 changesets remaining, ~1 tests)
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg bisect -b
   The first bad revision is:
@@ -665,7 +665,7 @@
   9:3c77083deb4a
   10:429fcd26f52d
   $ hg bisect --extend
-  Extending search to changeset 8:dab8161ac8fc
+  Extending search to changeset 8:dab8161ac8fc "8"
   2 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(untested)'
   $ hg log -q -r 'bisect(ignored)'
@@ -677,7 +677,7 @@
   9:3c77083deb4a
   10:429fcd26f52d
   $ hg bisect -g # dab8161ac8fc
-  Testing changeset 9:3c77083deb4a (3 changesets remaining, ~1 tests)
+  Testing changeset 9:3c77083deb4a "9" (3 changesets remaining, ~1 tests)
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(untested)'
   9:3c77083deb4a
@@ -757,13 +757,13 @@
   $ hg bisect -r
   $ hg bisect -b 13
   $ hg bisect -g 8
-  Testing changeset 11:82ca6f06eccd (3 changesets remaining, ~1 tests)
+  Testing changeset 11:82ca6f06eccd "11" (3 changesets remaining, ~1 tests)
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(untested)'
   11:82ca6f06eccd
   12:9f259202bbe7
   $ hg bisect -g 2
-  Testing changeset 11:82ca6f06eccd (3 changesets remaining, ~1 tests)
+  Testing changeset 11:82ca6f06eccd "11" (3 changesets remaining, ~1 tests)
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -q -r 'bisect(untested)'
   11:82ca6f06eccd

--- a/tests/test-bisect3.t	Fri Mar 19 13:18:53 2021 +0100
+++ b/tests/test-bisect3.t	Fri Mar 19 23:16:09 2021 -0700
@@ -72,13 +72,13 @@
   $ hg bisect --good 4
   $ hg bisect --good 6
   $ hg bisect --bad 12
-  Testing changeset 9:2197c557e14c (6 changesets remaining, ~2 tests)
+  Testing changeset 9:2197c557e14c "9=8+3" (6 changesets remaining, ~2 tests)
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect --bad 10
-  Testing changeset 8:e74a86251f58 (4 changesets remaining, ~2 tests)
+  Testing changeset 8:e74a86251f58 "8" (4 changesets remaining, ~2 tests)
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg bisect --skip 7
-  Testing changeset 8:e74a86251f58 (4 changesets remaining, ~2 tests)
+  Testing changeset 8:e74a86251f58 "8" (4 changesets remaining, ~2 tests)
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 test template

--- a/tests/test-template-map.t	Fri Mar 19 13:18:53 2021 +0100
+++ b/tests/test-template-map.t	Fri Mar 19 23:16:09 2021 -0700
@@ -1606,7 +1606,7 @@
 
   $ hg bisect -g 1
   $ hg bisect -b 3 --noupdate
-  Testing changeset 2:97054abb4ab8 (2 changesets remaining, ~1 tests)
+  Testing changeset 2:97054abb4ab8 "no person" (2 changesets remaining, ~1 tests)
   $ hg log -T bisect -r 0:4
   changeset:   0:1e4e1b8f71e0
   bisect:      good (implicit)