[PATCH 1 of 3] Prevent command options from aliasing each other

[Dan Villiom Podlaski Christiansen]

# HG changeset patch
# User Dan Villiom Podlaski Christiansen <danchr at gmail.com>
# Date 1246878985 -7200
# Node ID 96e8bf2fe345a6caa2f4627615b5f1fb3afd61bd
# Parent  95046688f80fbe481241ed3affeed205ce378b7e
Prevent command options from aliasing each other.

This may lead to changes to options for one command inadvertently
affecting other commands.

diff --git a/hgext/mq.py b/hgext/mq.py
--- a/hgext/mq.py
+++ b/hgext/mq.py
@@ -2511,7 +2511,7 @@ cmdtable = {
          _('hg qclone [OPTION]... SOURCE [DEST]')),
     "qcommit|qci":
         (commit,
-         commands.table["^commit|ci"][1],
+         [] + commands.table["^commit|ci"][1],
          _('hg qcommit [OPTION]... [FILE]...')),
     "^qdiff":
         (diff,
diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -3299,7 +3299,7 @@ table = {
         (debugsub,
          [('r', 'rev', '', _('revision to check'))],
          _('[-r REV] [REV]')),
-    "debugwalk": (debugwalk, walkopts, _('[OPTION]... [FILE]...')),
+    "debugwalk": (debugwalk, [] + walkopts, _('[OPTION]... [FILE]...')),
     "^diff":
         (diff,
          [('r', 'rev', [], _('revision')),
@@ -3377,7 +3377,7 @@ table = {
            ' [--bundle FILENAME] [SOURCE]')),
     "^init":
         (init,
-         remoteopts,
+         [] + remoteopts,
          _('[-e CMD] [--remotecmd CMD] [DEST]')),
     "locate":
         (locate,
diff --git a/mercurial/extensions.py b/mercurial/extensions.py
--- a/mercurial/extensions.py
+++ b/mercurial/extensions.py
@@ -105,6 +105,10 @@ def wrapcommand(table, command, wrapper)
     wrap.__doc__ = getattr(origfn, '__doc__')
     wrap.__module__ = getattr(origfn, '__module__')
 
+    # prevent option modifications from cascading to other commands by
+    # copying the options list.
+    entry = entry[:1] + ([] + entry[1],) + entry[2:]
+
     newentry = list(entry)
     newentry[0] = wrap
     table[key] = tuple(newentry)