# HG changeset patch
# User Phil Cohen <phillco@fb.com>
# Date 1504638242 25200
# Node ID cd38b83bfb2308c25deb48ec5452e0417d52e471
# Parent  a9d8caf95941ff03466c7087f3d8ae92ebe61713
filemerge: use fctx.write() in the internal:dump tool, instead of copy

This is slower but allows this tool to work with the "deferred writes"
milestone of in-memory merge.

The performance hit is not too noticiable since this only used for the :dump
merge tool during a conflict.

Differential Revision: https://phab.mercurial-scm.org/D617

diff -r a9d8caf95941 -r cd38b83bfb23 mercurial/filemerge.py
--- a/mercurial/filemerge.py	Thu Aug 31 22:39:10 2017 -0700
+++ b/mercurial/filemerge.py	Tue Sep 05 12:04:02 2017 -0700
@@ -468,7 +468,7 @@
     a = _workingpath(repo, fcd)
     fd = fcd.path()
 
-    util.copyfile(a, a + ".local")
+    util.writefile(a + ".local", fcd.decodeddata())
     repo.wwrite(fd + ".other", fco.data(), fco.flags())
     repo.wwrite(fd + ".base", fca.data(), fca.flags())
     return False, 1, False