Add a __main__.py; fix GitPython remote fetch error message.

CHANGELOG

@@ -8,8 +8,10 @@ v0.5 (unreleased):
     old behavior.
   - `--depth 3` will look three levels deep. This is the new default.
   - `--depth -1` will recurse indefinitely. This is not recommended.
+- Allow gitup to be run directly as a Python module (python -m gitup).
 - Fixed an error when updating branches if the upstream is completely unrelated
   from the local branch (no common ancestor).
+- Fixed error message when fetching from a remote fails.
 
 v0.4.1 (released December 13, 2017):
 

gitup/__main__.py

@@ -0,0 +1,9 @@
+# -*- coding: utf-8  -*-
+#
+# Copyright (C) 2011-2018 Ben Kurtovic <ben.kurtovic@gmail.com>
+# Released under the terms of the MIT License. See LICENSE for details.
+
+from .script import run
+
+if __name__ == "__main__":
+    run()

gitup/script.py

@@ -7,6 +7,7 @@ from __future__ import print_function
 
 import argparse
 import os
+import platform
 import sys
 
 from colorama import init as color_init, Fore, Style
@@ -84,7 +85,8 @@ def main():
         '-h', '--help', action="help", help="show this help message and exit")
     group_m.add_argument(
         '-v', '--version', action="version",
-        version="gitup " + __version__)
+        version="gitup {0} (Python {1})".format(
+            __version__, platform.python_version()))
 
     # TODO: deprecated arguments, for removal in v1.0:
     parser.add_argument(

gitup/update.py

@@ -7,6 +7,8 @@ from __future__ import print_function
 
 from glob import glob
 import os
+import pipes
+import re
 import shlex
 
 from colorama import Fore, Style
@@ -77,8 +79,14 @@ def _fetch_remotes(remotes, prune):
         try:
             results = remote.fetch(progress=_ProgressMonitor(), prune=prune)
         except exc.GitCommandError as err:
-            msg = err.command[0].replace("Error when fetching: ", "")
-            if not msg.endswith("."):
+            # We should have to do this ourselves, but GitPython doesn't give
+            # us a sensible way to get the raw stderr...
+            msg = re.sub(r"\s+", " ", err.stderr).strip()
+            msg = re.sub(r"^stderr: *'(fatal: *)?", "", msg).strip("'")
+            if not msg:
+                command = " ".join(pipes.quote(arg) for arg in err.command)
+                msg = "{0} failed with status {1}.".format(command, err.status)
+            elif not msg.endswith("."):
                 msg += "."
             print(":", RED + "error:", msg)
             return