[PATCH 1 of 2] subrepo: hgsuberpo use local filesytem subrepo on push/pull when no source provided

[alexraynepe196 at gmail.com]

# HG changeset patch
# User alexrayne
# Date 1726176902 -10800
#      Fri Sep 13 00:35:02 2024 +0300
# Node ID a000ac71e41a56e3b1c7697f44e34683d0fd47bd
# Parent  3785814bc2b75c7785b6bf1a26f96ef5848b09dd
subrepo: hgsuberpo use local filesytem subrepo on push/pull when no source provided.

*       when hgsub not provides source (a kind of mistake), occasionaly was used parent repo on push/pull.
        This leads on accasinaly trash full subrepo contents into root-repo on push.
        now for such issue use local subrepo path, instead of parent repo.

diff --git a/mercurial/subrepo.py b/mercurial/subrepo.py
--- a/mercurial/subrepo.py
+++ b/mercurial/subrepo.py
@@ -482,6 +482,10 @@
         # internal config: ui._usedassubrepo
         self.ui.setconfig(b'ui', b'_usedassubrepo', b'True', b'subrepo')
         self._initrepo(r, state[0], create)
+        # provide relpath for subrepos
+        # this case push/pull try into local repo when no repo-source provided.
+        self._repo._relpath   = self._relpath;
+
 
     @annotatesubrepoerror
     def addwebdirpath(self, serverpath, webconf):
diff --git a/mercurial/subrepoutil.py b/mercurial/subrepoutil.py
--- a/mercurial/subrepoutil.py
+++ b/mercurial/subrepoutil.py
@@ -456,7 +456,12 @@
     """return pull/push path of repo - either based on parent repo .hgsub info
     or on the top repo config. Abort or return None if no source found."""
     if hasattr(repo, '_subparent'):
-        source = urlutil.url(repo._subsource)
+        source = repo._subsource
+        if not source:
+            if hasattr(repo, '_relpath'):
+                if urlutil.url(repo.root).islocal:
+                    source = repo._relpath
+        source = urlutil.url(source)
         if source.isabs():
             return bytes(source)
         source.path = posixpath.normpath(source.path)