[PATCH] configuration: --norc option disables custom config files (issue3147)

[Alexander Plavin]

# HG changeset patch
# User Alexander Plavin <me at aplavin.ru>
# Date 1366396791 -14400
#      Fri Apr 19 22:39:51 2013 +0400
# Branch stable
# Node ID c1d33cc4465312478b8446c00c5a85c9eccae4a9
# Parent  e57ef039ba021471c012451da6cc1b9afd86e30a
configuration: --norc option disables custom config files (issue3147)

Use default settings insted of custom ones in --norc option is specified

diff -r e57ef039ba02 -r c1d33cc44653 mercurial/commands.py
--- a/mercurial/commands.py	Wed Apr 17 17:27:39 2013 +0400
+++ b/mercurial/commands.py	Fri Apr 19 22:39:51 2013 +0400
@@ -50,6 +50,7 @@
     ('', 'version', None, _('output version information and exit')),
     ('h', 'help', None, _('display help and exit')),
     ('', 'hidden', False, _('consider hidden changesets')),
+    ('', 'norc', False, _('use default configuration, ignore all hgrc files')),
 ]
 
 dryrunopts = [('n', 'dry-run', None,
diff -r e57ef039ba02 -r c1d33cc44653 mercurial/config.py
--- a/mercurial/config.py	Wed Apr 17 17:27:39 2013 +0400
+++ b/mercurial/config.py	Fri Apr 19 22:39:51 2013 +0400
@@ -104,6 +104,10 @@
                 del self._data[section][item]
             self._source.pop((section, item), None)
 
+    def clear(self):
+        self._data = {}
+        self._source = {}
+
     def parse(self, src, data, sections=None, remap=None, include=None):
         sectionre = util.compilere(r'\[([^\[]+)\]')
         itemre = util.compilere(r'([^=\s][^=]*?)\s*=\s*(.*\S|)')
diff -r e57ef039ba02 -r c1d33cc44653 mercurial/dispatch.py
--- a/mercurial/dispatch.py	Wed Apr 17 17:27:39 2013 +0400
+++ b/mercurial/dispatch.py	Fri Apr 19 22:39:51 2013 +0400
@@ -670,6 +670,10 @@
         for cfg in cfgs:
             req.repo.ui.setconfig(*cfg)
 
+    if options['norc']:
+        for ui_ in uis:
+            ui_.clearconfig()
+
     if options['verbose'] or options['debug'] or options['quiet']:
         for opt in ('verbose', 'debug', 'quiet'):
             val = str(bool(options[opt]))
@@ -714,6 +718,8 @@
                     raise util.Abort(_("repository '%s' is not local") % path)
                 if options['hidden']:
                     repo = repo.unfiltered()
+                if options['norc']:
+                    repo.ui.clearconfig()
                 repo.ui.setconfig("bundle", "mainreporoot", repo.root)
             except error.RequirementError:
                 raise
diff -r e57ef039ba02 -r c1d33cc44653 mercurial/ui.py
--- a/mercurial/ui.py	Wed Apr 17 17:27:39 2013 +0400
+++ b/mercurial/ui.py	Fri Apr 19 22:39:51 2013 +0400
@@ -163,6 +163,11 @@
         self._ucfg.set(section, name, value)
         self.fixconfig(section=section)
 
+    def clearconfig(self):
+        self._tcfg.clear()
+        self._ucfg.clear()
+        self._ocfg.clear()
+
     def _data(self, untrusted):
         return untrusted and self._ucfg or self._tcfg
 
diff -r e57ef039ba02 -r c1d33cc44653 tests/test-completion.t
--- a/tests/test-completion.t	Wed Apr 17 17:27:39 2013 +0400
+++ b/tests/test-completion.t	Fri Apr 19 22:39:51 2013 +0400
@@ -127,6 +127,7 @@
   --help
   --hidden
   --noninteractive
+  --norc
   --profile
   --quiet
   --repository
@@ -160,6 +161,7 @@
   --ipv6
   --name
   --noninteractive
+  --norc
   --pid-file
   --port
   --prefix
diff -r e57ef039ba02 -r c1d33cc44653 tests/test-extension.t
--- a/tests/test-extension.t	Wed Apr 17 17:27:39 2013 +0400
+++ b/tests/test-extension.t	Fri Apr 19 22:39:51 2013 +0400
@@ -202,6 +202,7 @@
       --version           output version information and exit
    -h --help              display help and exit
       --hidden            consider hidden changesets
+      --norc              use default configuration, ignore all hgrc files
   
   [+] marked option can be specified multiple times
 
@@ -233,6 +234,7 @@
       --version           output version information and exit
    -h --help              display help and exit
       --hidden            consider hidden changesets
+      --norc              use default configuration, ignore all hgrc files
   
   [+] marked option can be specified multiple times
   $ echo 'debugextension = !' >> $HGRCPATH
diff -r e57ef039ba02 -r c1d33cc44653 tests/test-help.t
--- a/tests/test-help.t	Wed Apr 17 17:27:39 2013 +0400
+++ b/tests/test-help.t	Fri Apr 19 22:39:51 2013 +0400
@@ -249,6 +249,7 @@
       --version           output version information and exit
    -h --help              display help and exit
       --hidden            consider hidden changesets
+      --norc              use default configuration, ignore all hgrc files
   
   [+] marked option can be specified multiple times
   
@@ -336,6 +337,7 @@
       --version           output version information and exit
    -h --help              display help and exit
       --hidden            consider hidden changesets
+      --norc              use default configuration, ignore all hgrc files
   
   [+] marked option can be specified multiple times
 
@@ -1599,6 +1601,9 @@
   <tr><td></td>
   <td>--hidden</td>
   <td>consider hidden changesets</td></tr>
+  <tr><td></td>
+  <td>--norc</td>
+  <td>use default configuration, ignore all hgrc files</td></tr>
   </table>
   <p>
   [+] marked option can be specified multiple times
@@ -1751,6 +1756,9 @@
   <tr><td></td>
   <td>--hidden</td>
   <td>consider hidden changesets</td></tr>
+  <tr><td></td>
+  <td>--norc</td>
+  <td>use default configuration, ignore all hgrc files</td></tr>
   </table>
   <p>
   [+] marked option can be specified multiple times
diff -r e57ef039ba02 -r c1d33cc44653 tests/test-hgrc.t
--- a/tests/test-hgrc.t	Wed Apr 17 17:27:39 2013 +0400
+++ b/tests/test-hgrc.t	Fri Apr 19 22:39:51 2013 +0400
@@ -51,6 +51,10 @@
   foo.bar=a\nb\nc\nde\nfg
   foo.baz=bif cb
 
+  $ hg --norc showconfig
+  bundle.mainreporoot=$TESTTMP
+  $ hg --norc showconfig foo
+
   $ FAKEPATH=/path/to/nowhere
   $ export FAKEPATH
   $ echo '%include $FAKEPATH/no-such-file' > $HGRC