py3: make a bytes version of getopt.getopt()

getopt.getopt() deals with unicodes on Python 3 internally and if bytes
arguments are passed, then it will return TypeError. So we have now
pycompat.getoptb() which takes bytes arguments, convert them to unicode, call
getopt.getopt() and then convert the returned value back to bytes and then
return those value.
All the instances of getopt.getopt() are replaced with pycompat.getoptb().

mercurial/fancyopts.py

@@ -7,10 +7,11 b''
 
 from __future__ import absolute_import
 
-import getopt
-
 from .i18n import _
-from . import error
+from . import (
+    error,
+    pycompat,
+)
 
 # Set of flags to not apply boolean negation logic on
 nevernegate = set([
@@ -34,13 +35,14 b' def gnugetopt(args, options, longoptions'
         stopindex = args.index('--')
         extraargs = args[stopindex + 1:]
         args = args[:stopindex]
-    opts, parseargs = getopt.getopt(args, options, longoptions)
+    opts, parseargs = pycompat.getoptb(args, options, longoptions)
     args = []
     while parseargs:
         arg = parseargs.pop(0)
         if arg and arg[0] == '-' and len(arg) > 1:
             parseargs.insert(0, arg)
-            topts, newparseargs = getopt.getopt(parseargs, options, longoptions)
+            topts, newparseargs = pycompat.getoptb(parseargs,\
+                                            options, longoptions)
             opts = opts + topts
             parseargs = newparseargs
         else:
@@ -125,7 +127,7 b' def fancyopts(args, options, state, gnu='
     if gnu:
         parse = gnugetopt
     else:
-        parse = getopt.getopt
+        parse = pycompat.getoptb
     opts, args = parse(args, shortlist, namelist)
 
     # transfer result to state

mercurial/pycompat.py

@@ -10,6 +10,7 b' This contains aliases to hide python ver'
 
 from __future__ import absolute_import
 
+import getopt
 import os
 import sys
 
@@ -87,6 +88,19 b' if ispy3:'
     setattr = _wrapattrfunc(builtins.setattr)
     xrange = builtins.range
 
+    # getopt.getopt() on Python 3 deals with unicodes internally so we cannot
+    # pass bytes there. Passing unicodes will result in unicodes as return
+    # values which we need to convert again to bytes.
+    def getoptb(args, shortlist, namelist):
+        args = [a.decode('latin-1') for a in args]
+        shortlist = shortlist.decode('latin-1')
+        namelist = [a.decode('latin-1') for a in namelist]
+        opts, args = getopt.getopt(args, shortlist, namelist)
+        opts = [(a[0].encode('latin-1'), a[1].encode('latin-1'))
+                for a in opts]
+        args = [a.encode('latin-1') for a in args]
+        return opts, args
+
 else:
     def sysstr(s):
         return s
@@ -106,6 +120,9 b' else:'
     def fsdecode(filename):
         return filename
 
+    def getoptb(args, shortlist, namelist):
+        return getopt.getopt(args, shortlist, namelist)
+
     osname = os.name
     ospathsep = os.pathsep
     ossep = os.sep

mercurial/statprof.py

@@ -116,6 +116,10 b' import tempfile'
 import threading
 import time
 
+from . import (
+    pycompat,
+)
+
 defaultdict = collections.defaultdict
 contextmanager = contextlib.contextmanager
 
@@ -771,7 +775,7 b' def main(argv=None):'
 
     # process options
     try:
-        opts, args = getopt.getopt(sys.argv[optstart:], "hl:f:o:p:",
+        opts, args = pycompat.getoptb(sys.argv[optstart:], "hl:f:o:p:",
                                    ["help", "limit=", "file=", "output-file=", "script-path="])
     except getopt.error as msg:
         print(msg)