# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 1529016377 25200
# Node ID ff9694ea385275c6b1778188357727f331f48dba
# Parent  7e34fc78701acf33588252cb83f4992f435eda03
resolve: use context manager for config override

Differential Revision: https://phab.mercurial-scm.org/D3740

diff -r 7e34fc78701a -r ff9694ea3852 mercurial/commands.py
--- a/mercurial/commands.py	Thu Jun 14 15:45:45 2018 -0700
+++ b/mercurial/commands.py	Thu Jun 14 15:46:17 2018 -0700
@@ -4553,15 +4553,14 @@
 
                 try:
                     # preresolve file
-                    ui.setconfig('ui', 'forcemerge', opts.get('tool', ''),
-                                 'resolve')
-                    complete, r = ms.preresolve(f, wctx)
+                    overrides = {('ui', 'forcemerge'): opts.get('tool', '')}
+                    with ui.configoverride(overrides, 'resolve'):
+                        complete, r = ms.preresolve(f, wctx)
                     if not complete:
                         tocomplete.append(f)
                     elif r:
                         ret = 1
                 finally:
-                    ui.setconfig('ui', 'forcemerge', '', 'resolve')
                     ms.commit()
 
                 # replace filemerge's .orig file with our resolve file, but only
@@ -4577,13 +4576,12 @@
         for f in tocomplete:
             try:
                 # resolve file
-                ui.setconfig('ui', 'forcemerge', opts.get('tool', ''),
-                             'resolve')
-                r = ms.resolve(f, wctx)
+                overrides = {('ui', 'forcemerge'): opts.get('tool', '')}
+                with ui.configoverride(overrides, 'resolve'):
+                    r = ms.resolve(f, wctx)
                 if r:
                     ret = 1
             finally:
-                ui.setconfig('ui', 'forcemerge', '', 'resolve')
                 ms.commit()
 
             # replace filemerge's .orig file with our resolve file