One recipetool fix and a couple enhancements

index c68bef4..3063cf7 100755
@@ -82,9 +82,11 @@ def main():
 
     scriptutils.logger_setup_color(logger, args.color)
 
-    tinfoil_init(getattr(args, 'parserecipes', False))
-
-    ret = args.func(args)
+    try:
+        tinfoil_init(getattr(args, 'parserecipes', False))
+        ret = args.func(args)
+    except bb.BBHandledException:
+        ret = 1
 
     return ret
 

index 3063cf7..5ebef6b 100755
@@ -36,11 +36,8 @@ def tinfoil_init(parserecipes):
     import logging
     tinfoil = bb.tinfoil.Tinfoil()
     tinfoil.prepare(not parserecipes)
-
-    for plugin in plugins:
-        if hasattr(plugin, 'tinfoil_init'):
-            plugin.tinfoil_init(tinfoil)
     tinfoil.logger.setLevel(logger.getEffectiveLevel())
+    return tinfoil
 
 def main():
 

@@ -48,42 +45,58 @@ def main():
         logger.error("This script can only be run after initialising the build environment (e.g. by using oe-init-build-env)")
         sys.exit(1)
 
-    parser = argparse.ArgumentParser(description="OpenEmbedded recipe tool",
-                                     epilog="Use %(prog)s <subcommand> --help to get help on a specific command")
-    parser.add_argument('-d', '--debug', help='Enable debug output', action='store_true')
-    parser.add_argument('-q', '--quiet', help='Print only errors', action='store_true')
-    parser.add_argument('--color', choices=['auto', 'always', 'never'], default='auto', help='Colorize output (where %(metavar)s is %(choices)s)', metavar='COLOR')
-    subparsers = parser.add_subparsers(title='subcommands', metavar='<subcommand>')
+    def create_global_parser(**kwargs):
+        parser = argparse.ArgumentParser(description="OpenEmbedded recipe tool",
+                                         epilog="Use %(prog)s <subcommand> --help to get help on a specific command", **kwargs)
+        parser.add_argument('-d', '--debug', help='Enable debug output', action='store_true')
+        parser.add_argument('-q', '--quiet', help='Print only errors', action='store_true')
+        parser.add_argument('--color', choices=['auto', 'always', 'never'], default='auto', help='Colorize output (where %(metavar)s is %(choices)s)', metavar='COLOR')
+        return parser
+
+    parser = create_global_parser(add_help=False)
+    initial_args, unparsed_args = parser.parse_known_args(sys.argv[1:])
+    if initial_args.debug:
+        logger.setLevel(logging.DEBUG)
+    elif initial_args.quiet:
+        logger.setLevel(logging.ERROR)
+
+    # Re-create the parser here because adding the subparsers doesn't cause
+    # ArgumentParser to re-generate the formatted help text after
+    # parse_known_args()
+    parser = create_global_parser()
+
+    import scriptpath
+    bitbakepath = scriptpath.add_bitbake_lib_path()
+    if not bitbakepath:
+        logger.error("Unable to find bitbake by searching parent directory of this script or PATH")
+        sys.exit(1)
+    logger.debug('Found bitbake path: %s' % bitbakepath)
 
-    scriptutils.load_plugins(logger, plugins, os.path.join(scripts_path, 'lib', 'recipetool'))
+    scriptutils.logger_setup_color(logger, initial_args.color)
+
+    subparsers = parser.add_subparsers(title='subcommands', metavar='<subcommand>')
+    tinfoil = tinfoil_init(False)
+    for path in ([scripts_path] +
+                 tinfoil.config_data.getVar('BBPATH', True).split(':')):
+        pluginpath = os.path.join(path, 'lib', 'recipetool')
+        scriptutils.load_plugins(logger, plugins, pluginpath)
     registered = False
     for plugin in plugins:
         if hasattr(plugin, 'register_command'):
             registered = True
             plugin.register_command(subparsers)
+        if hasattr(plugin, 'tinfoil_init'):
+            plugin.tinfoil_init(tinfoil)
 
     if not registered:
         logger.error("No commands registered - missing plugins?")
         sys.exit(1)
 
-    args = parser.parse_args()
-
-    if args.debug:
-        logger.setLevel(logging.DEBUG)
-    elif args.quiet:
-        logger.setLevel(logging.ERROR)
-
-    import scriptpath
-    bitbakepath = scriptpath.add_bitbake_lib_path()
-    if not bitbakepath:
-        logger.error("Unable to find bitbake by searching parent directory of this script or PATH")
-        sys.exit(1)
-    logger.debug('Found bitbake path: %s' % bitbakepath)
-
-    scriptutils.logger_setup_color(logger, args.color)
+    args = parser.parse_args(unparsed_args, namespace=initial_args)
 
     try:
-        tinfoil_init(getattr(args, 'parserecipes', False))
+        if getattr(args, 'parserecipes', False):
+            tinfoil.parseRecipes()
         ret = args.func(args)
     except bb.BBHandledException:
         ret = 1

index 9903871..24a7903 100644
@@ -334,7 +334,7 @@ def appendfile(args):
         return 3
 
 
-def appendsrc(args, files, rd):
+def appendsrc(args, files, rd, extralines=None):
     import oe.recipeutils
 
     srcdir = rd.getVar('S', True)

@@ -349,7 +349,7 @@ def appendsrc(args, files, rd):
         simplified[simple_uri] = uri
 
     copyfiles = {}
-    extralines = []
+    extralines = extralines or []
     for newfile, srcfile in files.iteritems():
         src_destdir = os.path.dirname(srcfile)
         if not args.use_workdir: