cleanup: remove pointless r-prefixes on single-quoted strings This is the promised second step on single-quoted strings. These had existed because our source transformer didn't turn r'' into b'', so we had tagged some strings as r-strings to get "native" strings on both Pythons. Now that the transformer is gone, we can dispense with this nonsense. Methodology: I ran hg locate 'set:added() or modified() or clean()' | egrep '.*\.py$' | xargs egrep --color=never -n -- \[\^b\]\[\^a-z\]r\'\[\^\'\\\\\]\*\'\[\^\'\ in an emacs grep-mode buffer, and then used a keyboard macro to iterate over the results and remove the r prefix as needed. # skip-blame removing unneeded r prefixes left over from Python 3 migration. Differential Revision: https://phab.mercurial-scm.org/D7306

--- a/mercurial/pure/charencode.py	Sun Nov 10 07:30:14 2019 -0800
+++ b/mercurial/pure/charencode.py	Fri Nov 08 11:19:20 2019 -0800
@@ -85,6 +85,6 @@
         jm = _jsonmap
     # non-BMP char is represented as UTF-16 surrogate pair
     u16b = u8chars.decode('utf-8', _utf8strict).encode('utf-16', _utf8strict)
-    u16codes = array.array(r'H', u16b)
+    u16codes = array.array('H', u16b)
     u16codes.pop(0)  # drop BOM
     return b''.join(jm[x] if x < 128 else b'\\u%04x' % x for x in u16codes)