--- a/mercurial/patch.py	Tue Oct 08 15:15:37 2019 -0700
+++ b/mercurial/patch.py	Tue Oct 08 15:06:18 2019 -0700
@@ -51,7 +51,7 @@
 gitre = re.compile(br'diff --git a/(.*) b/(.*)')
 tabsplitter = re.compile(br'(\t+|[^\t]+)')
 wordsplitter = re.compile(
-    br'(\t+| +|[a-zA-Z0-9_\x80-\xff]+|' b'[^ \ta-zA-Z0-9_\x80-\xff])'
+    br'(\t+| +|[a-zA-Z0-9_\x80-\xff]+|[^ \ta-zA-Z0-9_\x80-\xff])'
 )
 
 PatchError = error.PatchError
@@ -805,7 +805,7 @@
         if self.exists and self.create:
             if self.copysource:
                 self.ui.warn(
-                    _(b"cannot create %s: destination already " b"exists\n")
+                    _(b"cannot create %s: destination already exists\n")
                     % self.fname
                 )
             else:
@@ -3191,7 +3191,7 @@
 
     if stats:
         output.append(
-            _(b' %d files changed, %d insertions(+), ' b'%d deletions(-)\n')
+            _(b' %d files changed, %d insertions(+), %d deletions(-)\n')
             % (len(stats), totaladds, totalremoves)
         )