diff -r 6d3b67a837a6 -r c1ccefb513e4 mercurial/utils/stringutil.py
--- a/mercurial/utils/stringutil.py	Sat Dec 28 01:35:05 2019 -0500
+++ b/mercurial/utils/stringutil.py	Sat Dec 28 01:51:17 2019 -0500
@@ -593,7 +593,7 @@
     )
 
 
-_correctauthorformat = remod.compile(br'^[^<]+\s\<[^<>]+@[^<>]+\>$')
+_correctauthorformat = remod.compile(br'^[^<]+\s<[^<>]+@[^<>]+>$')
 
 
 def isauthorwellformed(author):