# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1594642460 -32400
# Node ID efcc87d37f4dde305ddaebe11aa8d71be5532478
# Parent  9e6b86a8f4380623b6381b2d03ce3ae480f98e80
dispatch: handle late KeyboardInterrupt occurred in run()

User can press Ctrl+C while flushing streams in dispatch.run(). In such case,
I think exiting with 255 is better than printing Python traceback and exiting
with 1.

diff -r 9e6b86a8f438 -r efcc87d37f4d mercurial/dispatch.py
--- a/mercurial/dispatch.py	Mon Jul 13 21:06:34 2020 +0900
+++ b/mercurial/dispatch.py	Mon Jul 13 21:14:20 2020 +0900
@@ -140,8 +140,10 @@
                 status = -1
 
         _silencestdio()
-    finally:
-        pass
+    except KeyboardInterrupt:
+        # Catch early/late KeyboardInterrupt as last ditch. Here nothing will
+        # be printed to console to avoid another IOError/KeyboardInterrupt.
+        status = -1
     sys.exit(status & 255)