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diff --git a/.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/urllib3/packages/rfc3986/misc.py b/.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/urllib3/packages/rfc3986/misc.py
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+++ b/.emacs.d.back/.python-environments/default/lib/python3.7/site-packages/pip/_vendor/urllib3/packages/rfc3986/misc.py
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+# -*- coding: utf-8 -*-
+# Copyright (c) 2014 Rackspace
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""
+Module containing compiled regular expressions and constants.
+
+This module contains important constants, patterns, and compiled regular
+expressions for parsing and validating URIs and their components.
+"""
+
+import re
+
+from . import abnf_regexp
+
+# These are enumerated for the named tuple used as a superclass of
+# URIReference
+URI_COMPONENTS = ['scheme', 'authority', 'path', 'query', 'fragment']
+
+important_characters = {
+    'generic_delimiters': abnf_regexp.GENERIC_DELIMITERS,
+    'sub_delimiters': abnf_regexp.SUB_DELIMITERS,
+    # We need to escape the '*' in this case
+    're_sub_delimiters': abnf_regexp.SUB_DELIMITERS_RE,
+    'unreserved_chars': abnf_regexp.UNRESERVED_CHARS,
+    # We need to escape the '-' in this case:
+    're_unreserved': abnf_regexp.UNRESERVED_RE,
+}
+
+# For details about delimiters and reserved characters, see:
+# http://tools.ietf.org/html/rfc3986#section-2.2
+GENERIC_DELIMITERS = abnf_regexp.GENERIC_DELIMITERS_SET
+SUB_DELIMITERS = abnf_regexp.SUB_DELIMITERS_SET
+RESERVED_CHARS = abnf_regexp.RESERVED_CHARS_SET
+# For details about unreserved characters, see:
+# http://tools.ietf.org/html/rfc3986#section-2.3
+UNRESERVED_CHARS = abnf_regexp.UNRESERVED_CHARS_SET
+NON_PCT_ENCODED = abnf_regexp.NON_PCT_ENCODED_SET
+
+URI_MATCHER = re.compile(abnf_regexp.URL_PARSING_RE)
+
+SUBAUTHORITY_MATCHER = re.compile((
+    '^(?:(?P<userinfo>{0})@)?'  # userinfo
+    '(?P<host>{1})'  # host
+    ':?(?P<port>{2})?$'  # port
+    ).format(abnf_regexp.USERINFO_RE,
+             abnf_regexp.HOST_PATTERN,
+             abnf_regexp.PORT_RE))
+
+
+HOST_MATCHER = re.compile('^' + abnf_regexp.HOST_RE + '$')
+IPv4_MATCHER = re.compile('^' + abnf_regexp.IPv4_RE + '$')
+IPv6_MATCHER = re.compile(r'^\[' + abnf_regexp.IPv6_ADDRZ_RFC4007_RE + r'\]$')
+
+# Used by host validator
+IPv6_NO_RFC4007_MATCHER = re.compile(r'^\[%s\]$' % (
+    abnf_regexp.IPv6_ADDRZ_RE
+))
+
+# Matcher used to validate path components
+PATH_MATCHER = re.compile(abnf_regexp.PATH_RE)
+
+
+# ##################################
+# Query and Fragment Matcher Section
+# ##################################
+
+QUERY_MATCHER = re.compile(abnf_regexp.QUERY_RE)
+
+FRAGMENT_MATCHER = QUERY_MATCHER
+
+# Scheme validation, see: http://tools.ietf.org/html/rfc3986#section-3.1
+SCHEME_MATCHER = re.compile('^{0}$'.format(abnf_regexp.SCHEME_RE))
+
+RELATIVE_REF_MATCHER = re.compile(r'^%s(\?%s)?(#%s)?$' % (
+    abnf_regexp.RELATIVE_PART_RE,
+    abnf_regexp.QUERY_RE,
+    abnf_regexp.FRAGMENT_RE,
+))
+
+# See http://tools.ietf.org/html/rfc3986#section-4.3
+ABSOLUTE_URI_MATCHER = re.compile(r'^%s:%s(\?%s)?$' % (
+    abnf_regexp.COMPONENT_PATTERN_DICT['scheme'],
+    abnf_regexp.HIER_PART_RE,
+    abnf_regexp.QUERY_RE[1:-1],
+))
+
+# ###############
+# IRIs / RFC 3987
+# ###############
+
+IRI_MATCHER = re.compile(abnf_regexp.URL_PARSING_RE, re.UNICODE)
+
+ISUBAUTHORITY_MATCHER = re.compile((
+    u'^(?:(?P<userinfo>{0})@)?'  # iuserinfo
+    u'(?P<host>{1})'  # ihost
+    u':?(?P<port>{2})?$'  # port
+    ).format(abnf_regexp.IUSERINFO_RE,
+             abnf_regexp.IHOST_RE,
+             abnf_regexp.PORT_RE), re.UNICODE)
+
+
+# Path merger as defined in http://tools.ietf.org/html/rfc3986#section-5.2.3
+def merge_paths(base_uri, relative_path):
+    """Merge a base URI's path with a relative URI's path."""
+    if base_uri.path is None and base_uri.authority is not None:
+        return '/' + relative_path
+    else:
+        path = base_uri.path or ''
+        index = path.rfind('/')
+        return path[:index] + '/' + relative_path
+
+
+UseExisting = object()