# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1711735322 10800
# Node ID 107c5af631a7766695e004cf85f9338d758944bb
# Parent  ab60707314e9b91da5451cbc1ce166a9b8b725fb
topic: make debug-default-topic-namespace --clear slightly smarter

Now we don't have to run evolve too much after using this flag. Logic taken
directly from the `hg topic` command when it changes topic of multiple
changesets.

diff -r ab60707314e9 -r 107c5af631a7 hgext3rd/topic/__init__.py
--- a/hgext3rd/topic/__init__.py	Fri Mar 15 17:05:09 2024 -0300
+++ b/hgext3rd/topic/__init__.py	Fri Mar 29 15:02:02 2024 -0300
@@ -1944,13 +1944,15 @@
     revs = repo.revs(b'not public() and not obsolete() and (%lr)', condition)
     if opts[b'clear']:
         with repo.wlock(), repo.lock(), repo.transaction(b'debug-default-topic-namespace'):
+            successors = {}
             for rev in revs:
-                _clear_tns_extras(ui, repo, rev)
+                _clear_tns_extras(ui, repo, rev, successors)
+            scmutil.cleanupnodes(repo, successors, b'debug-default-topic-namespace')
         return
     displayer = logcmdutil.changesetdisplayer(ui, repo, opts)
     logcmdutil.displayrevs(ui, repo, revs, displayer, None)
 
-def _clear_tns_extras(ui, repo, rev):
+def _clear_tns_extras(ui, repo, rev, successors):
     ctx = repo[rev]
 
     if len(ctx.parents()) > 1:
@@ -1972,6 +1974,10 @@
 
     p1 = ctx.p1().node()
     p2 = ctx.p2().node()
+    if p1 in successors:
+        p1 = successors[p1][0]
+    if p2 in successors:
+        p2 = successors[p2][0]
     mc = context.memctx(repo,
                         (p1, p2),
                         ctx.description(),
@@ -1985,8 +1991,7 @@
     with repo.ui.configoverride(overrides, b'debug-default-topic-namespace'):
         newnode = repo.commitctx(mc)
 
-    replacements = {(ctx.node(),): (newnode,)}
-    scmutil.cleanupnodes(repo, replacements, b'debug-default-topic-namespace')
+    successors[ctx.node()] = (newnode,)
 
 @command(b'debug-parse-fqbn', commands.formatteropts, _(b'FQBN'), optionalrepo=True)
 def debugparsefqbn(ui, repo, fqbn, **opts):
diff -r ab60707314e9 -r 107c5af631a7 tests/test-namespaces.t
--- a/tests/test-namespaces.t	Fri Mar 15 17:05:09 2024 -0300
+++ b/tests/test-namespaces.t	Fri Mar 29 15:02:02 2024 -0300
@@ -324,17 +324,15 @@
   5:16d6061fce0c branch=stable topic-namespace=default
 
   $ hg debug-default-topic-namespace --none --default --clear
-  1 new orphan changesets
 
   $ hg debug-default-topic-namespace --none --default
 
+  $ hg evolve --config extensions.evolve= --list
+
   $ hg evolve --config extensions.evolve= --any
   update:[7] tns=default
   0 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  working directory is now at 68ef84f4b0a2
-  move:[7] tns=default
-  atop:[6] tns=none
-  working directory is now at ddeaa72064d4
+  working directory is now at 38c9ea9d27a7
 
   $ hg debug-default-topic-namespace --none --default