# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 1621398732 25200
# Node ID 5a75be9163165691e1c370d2e34a066d28ab2941
# Parent  d9c71bbe20f7e9c056b2f17d67164091f85d3c6d
errors: create superclass for Abort exception

I'd like to let extensions subclass `StorageError` to define a custom
exit code. However, `StorageError` does not extend `Abort` (which is
where the exit code currently lives), and it seems that it's not
supposed to either (`StorageError` seems to be for lower-level errors
and `Abort` is for command-level errors). This patch therefore
extracts all the code from `Abort` into a new `Error` class, which
I'll soon make `StorageError` also extend.

Differential Revision: https://phab.mercurial-scm.org/D10738

diff -r d9c71bbe20f7 -r 5a75be916316 mercurial/error.py
--- a/mercurial/error.py	Tue May 18 22:07:16 2021 -0700
+++ b/mercurial/error.py	Tue May 18 21:32:12 2021 -0700
@@ -51,8 +51,8 @@
         super(Hint, self).__init__(*args, **kw)
 
 
-class Abort(Hint, Exception):
-    """Raised if a command needs to print an error and exit."""
+class Error(Hint, Exception):
+    """Base class for Mercurial errors."""
 
     def __init__(
         self, message, hint=None, coarse_exit_code=None, detailed_exit_code=None
@@ -87,6 +87,10 @@
         return message
 
 
+class Abort(Error):
+    """Raised if a command needs to print an error and exit."""
+
+
 class StorageError(Hint, Exception):
     """Raised when an error occurs in a storage layer.