style: run a patched black on a subset of mercurial This applied black to the 20 smallest files in mercurial/: ls -S1 mercurial/*.py | tail -n20 | xargs black --skip-string-normalization Note that a few files failed to format, presumably due to a bug in my patch. The intent is to be able to compare results to D5064 with https://github.com/python/black/pull/826 applied to black. I skipped string normalization on this patch for clarity - in reality I think we'd want one pass without string normalization, followed by another to normalize strings (which is basically replacing ' with " globally.) # skip-blame mass-reformatting only Differential Revision: https://phab.mercurial-scm.org/D6342

--- a/mercurial/diffhelper.py	Fri Oct 04 15:53:45 2019 -0400
+++ b/mercurial/diffhelper.py	Sat Oct 05 10:29:34 2019 -0400
@@ -14,6 +14,7 @@
     pycompat,
 )
 
+
 def addlines(fp, hunk, lena, lenb, a, b):
     """Read lines from fp into the hunk
 
@@ -47,6 +48,7 @@
                 b.append(s[1:])
                 a.append(s)
 
+
 def fixnewline(hunk, a, b):
     """Fix up the last lines of a and b when the patch has no newline at EOF"""
     l = hunk[-1]
@@ -62,6 +64,7 @@
         a[-1] = hline
     hunk[-1] = hline
 
+
 def testhunk(a, b, bstart):
     """Compare the lines in a with the lines in b