diff mercurial/dispatch.py @ 48186:6edc8800dbc3

dispatch: use detailed exit code 250 for keyboard interrupt

Among our users at Google, we're still seeing several percent of
commands fail with exit code 255. I suspect keyboard interrupts is an
important remaining reason.

This is a resend of D10086 with some fixes for pager handling added
ahead of it.

Differential Revision: https://phab.mercurial-scm.org/D11628

--- a/mercurial/dispatch.py	Fri Oct 08 13:36:02 2021 -0700
+++ b/mercurial/dispatch.py	Tue Mar 02 09:33:25 2021 -0800
@@ -316,7 +316,10 @@
             except IOError as inst:
                 if inst.errno != errno.EPIPE:
                     raise
-            ret = -1
+            if req.ui.configbool(b'ui', b'detailed-exit-code'):
+                ret = 250
+            else:
+                ret = -1
         finally:
             duration = util.timer() - starttime
             try: