tests: add test to demonstrate issue4037
`hg diff --stat -q --config diff.git=0` does not output anything whereas it
should print the stat. This is a quiet old bug dating to 2013 and looking at
code I think it exists it since 2005 or when --stat was introduced. The next
patch will fix the bug.
Differential Revision: https://phab.mercurial-scm.org/D6006
--- a/tests/test-diffstat.t Fri Jan 18 11:07:46 2019 -0800
+++ b/tests/test-diffstat.t Sat Feb 23 04:50:46 2019 +0530
@@ -282,3 +282,10 @@
$ hg diff --stat --git
c => new c | 0
1 files changed, 0 insertions(+), 0 deletions(-)
+
+Make sure `diff --stat -q --config diff.git-0` shows stat (issue4037)
+
+ $ hg status
+ A new c
+ R c
+ $ hg diff --stat -q