# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1689621459 10800
# Node ID 43a1bacf6a146848cf8167f40431843ac1d58942
# Parent  3d16c9a8cf3aa5b01f8478422a9ad0e770350cba
topic: write topic namespace to disk if it's not "none"

And we need to make sure we don't provide None value to _changecurrenttns().

diff -r 3d16c9a8cf3a -r 43a1bacf6a14 hgext3rd/topic/__init__.py
--- a/hgext3rd/topic/__init__.py	Mon Jul 17 14:34:59 2023 -0300
+++ b/hgext3rd/topic/__init__.py	Mon Jul 17 16:17:39 2023 -0300
@@ -1705,7 +1705,7 @@
         _changecurrenttopic(repo, topic)
 
 def _changecurrenttns(repo, tns):
-    if tns:
+    if tns != b'none':
         with repo.wlock():
             repo.vfs.write(b'topic-namespace', tns)
     else:
@@ -1720,7 +1720,7 @@
     if opts.get('clear'):
         if tns:
             raise error.Abort(_(b"cannot use --clear when setting a topic namespace"))
-        tns = None
+        tns = b'none'
     elif not tns:
         ui.write(b'%s\n' % repo.currenttns)
         return