BTW: I tried 4 different version of git: git version 2.34.1 fedora git version 2.32.0 (Apple Git-132) git version 2.36.0 ubuntu git version 2.30.2 debian The result of test is all the same. On 24 Apr 22 ◦ 14:41, FanJun Kong wrote: > Hi, > > Here are steps of what I am doing: > > First, I created two commits to a demo project. > > when I use command: > git format-patch --cover-letter -1 > > cat 0000-cover-letter.patch > > From 2e62ef46d5627319c4cb11be81079e3364fca40c Mon Sep 17 00:00:00 2001 > From: FanJun Kong <bh1scw@xxxxxxxxx> > Date: Sun, 24 Apr 2022 14:31:45 +0800 > Subject: [PATCH 0/1] *** SUBJECT HERE *** > > *** BLURB HERE *** > > FanJun Kong (1): > Second commit. > > 1.c | 4 ++++ > 1 file changed, 4 insertions(+) > > -- > 2.32.0 (Apple Git-132) > > ok, you can see the cover letter has diffstat, just above "--". > > Then I change command to: > > git format-patch --cover-letter -2 > > cat 0000-cover-letter.patch > > From 2e62ef46d5627319c4cb11be81079e3364fca40c Mon Sep 17 00:00:00 2001 > From: FanJun Kong <bh1scw@xxxxxxxxx> > Date: Sun, 24 Apr 2022 14:34:48 +0800 > Subject: [PATCH 0/2] *** SUBJECT HERE *** > > *** BLURB HERE *** > > FanJun Kong (2): > First commit. > Second commit. > > -- > 2.32.0 (Apple Git-132) > > Comparing with last command, I just want to get 2 patches, > but this time the diffstat is missing. > > I am not sure if this is a bug or I miss some options. > > I googled this issue, but not got too much. > > Thanks for your time. > Fanjun Kong
