commands: add norepo argument to command decorator

Since decorators are evaluated at module load time and since the
@command decorator imports commands, the norepo variable (along with
its friends) may not be declared yet. These variables are now declared
before @command usage to ensure they are present.

mercurial/cmdutil.py

@@ -2489,14 +2489,23 b' def command(table):'
 
     The synopsis argument defines a short, one line summary of how to use the
     command. This shows up in the help output.
+
+    The norepo argument defines whether the command does not require a
+    local repository. Most commands operate against a repository, thus the
+    default is False.
     """
-
-    def cmd(name, options=(), synopsis=None):
+    def cmd(name, options=(), synopsis=None, norepo=False):
         def decorator(func):
             if synopsis:
                 table[name] = func, list(options), synopsis
             else:
                 table[name] = func, list(options)
+
+            if norepo:
+                # Avoid import cycle.
+                import commands
+                commands.norepo += ' %s' % ' '.join(parsealiases(name))
+
             return func
         return decorator
 

mercurial/commands.py

@@ -26,6 +26,13 b' table = {}'
 
 command = cmdutil.command(table)
 
+norepo = ("clone init version help debugcommands debugcomplete"
+          " debugdate debuginstall debugfsinfo debugpushkey debugwireargs"
+          " debugknown debuggetbundle debugbundle")
+optionalrepo = ("identify paths serve config showconfig debugancestor debugdag"
+                " debugdata debugindex debugindexdot debugrevlog")
+inferrepo = ("add addremove annotate cat commit diff grep forget log parents"
+             " remove resolve status debugwalk")
 # common command options
 
 globalopts = [
@@ -5977,11 +5984,3 b' def version_(ui):'
         "There is NO\nwarranty; "
         "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
     ))
-
-norepo = ("clone init version help debugcommands debugcomplete"
-          " debugdate debuginstall debugfsinfo debugpushkey debugwireargs"
-          " debugknown debuggetbundle debugbundle")
-optionalrepo = ("identify paths serve config showconfig debugancestor debugdag"
-                " debugdata debugindex debugindexdot debugrevlog")
-inferrepo = ("add addremove annotate cat commit diff grep forget log parents"
-             " remove resolve status debugwalk")