use ArgumentParser's own "usage" line in help output

fdroidserver/btlog.py

@@ -148,7 +148,7 @@ For more info on this idea:
 def main():
     global options
 
-    parser = ArgumentParser(usage="%(prog)s [options]")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("--git-repo",
                         default=os.path.join(os.getcwd(), 'binary_transparency'),

fdroidserver/checkupdates.py

@@ -597,7 +597,7 @@ def main():
     global config, options
 
     # Parse command line...
-    parser = ArgumentParser(usage="%(prog)s [options] [APPID [APPID ...]]")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("appid", nargs='*', help=_("application ID of file to operate on"))
     parser.add_argument("--auto", action="store_true", default=False,

fdroidserver/gpgsign.py

@@ -47,7 +47,7 @@ def main():
     global config, options
 
     # Parse command line...
-    parser = ArgumentParser(usage="%(prog)s [options]")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     options = parser.parse_args()
 

fdroidserver/lint.py

@@ -568,7 +568,7 @@ def main():
     global config, options
 
     # Parse command line...
-    parser = ArgumentParser(usage="%(prog)s [options] [APPID [APPID ...]]")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("-f", "--format", action="store_true", default=False,
                         help=_("Also warn about formatting issues, like rewritemeta -l"))

fdroidserver/mirror.py

@@ -41,7 +41,7 @@ def _run_wget(path, urls):
 def main():
     global options
 
-    parser = ArgumentParser(usage=_("%(prog)s [options] url"))
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("url", nargs='?',
                         help=_('Base URL to mirror, can include the index signing key '

fdroidserver/nightly.py

@@ -88,7 +88,7 @@ def _ssh_key_from_debug_keystore(keystore=KEYSTORE_FILE):
 
 def main():
 
-    parser = ArgumentParser(usage="%(prog)s")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("--keystore", default=KEYSTORE_FILE,
                         help=_("Specify which debug keystore file to use."))

fdroidserver/readmeta.py

@@ -25,7 +25,7 @@ options = None
 
 def main():
 
-    parser = ArgumentParser(usage="%(prog)s")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     metadata.add_metadata_arguments(parser)
     options = parser.parse_args()

fdroidserver/rewritemeta.py

@@ -49,8 +49,7 @@ def main():
 
     global config, options
 
-    # Parse command line...
-    parser = ArgumentParser(usage="%(prog)s [options] [APPID [APPID ...]]")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("-l", "--list", action="store_true", default=False,
                         help=_("List files that would be reformatted"))

fdroidserver/signatures.py

@@ -87,9 +87,7 @@ def extract(options):
 
 
 def main():
-
-    # Parse command line...
-    parser = ArgumentParser(usage="%(prog)s [options] APK [APK...]")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     parser.add_argument("APK", nargs='*',
                         help=_("signed APK, either a file-path or HTTPS URL."))

fdroidserver/signindex.py

@@ -91,8 +91,7 @@ def main():
 
     global config, options
 
-    # Parse command line...
-    parser = ArgumentParser(usage="%(prog)s [options]")
+    parser = ArgumentParser()
     common.setup_global_opts(parser)
     options = parser.parse_args()