# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1675120133 -3600
# Node ID 5c9462adc4b997cc1338b7de0daf53aeb866ce9a
# Parent  7e71d878c708dbd02b6e6c8c6295dd398ffaa1fc
dirstate: use `dirstate.change_files` to scope the change in `copy`

This is the way, unless we are not actually touching the working copy.
In such cases we don't need to do something.

diff -r 7e71d878c708 -r 5c9462adc4b9 mercurial/commands.py
--- a/mercurial/commands.py	Tue Dec 13 16:29:30 2022 +0100
+++ b/mercurial/commands.py	Tue Jan 31 00:08:53 2023 +0100
@@ -2497,7 +2497,19 @@
     Returns 0 on success, 1 if errors are encountered.
     """
     opts = pycompat.byteskwargs(opts)
-    with repo.wlock():
+
+    context = repo.dirstate.changing_files
+    rev = opts.get(b'at_rev')
+    ctx = None
+    if rev:
+        ctx = logcmdutil.revsingle(repo, rev)
+        if ctx.rev() is not None:
+
+            def context(repo):
+                return util.nullcontextmanager()
+
+            opts[b'at_rev'] = ctx.rev()
+    with repo.wlock(), context(repo):
         return cmdutil.copy(ui, repo, pats, opts)