Removed unneeded escapes in regexes.

Special characters lose their special meaning inside sets of characters.

"-" lose its special meaning if it's placed as the first or last
character.

Follow up to 7c6b66383da5f9a67142334cd2ed2d769739e8f1.

django/contrib/admindocs/urls.py

@@ -38,7 +38,7 @@ urlpatterns = [
         name="django-admindocs-models-index",
     ),
     re_path(
-        r"^models/(?P<app_label>[^\.]+)\.(?P<model_name>[^/]+)/$",
+        r"^models/(?P<app_label>[^.]+)\.(?P<model_name>[^/]+)/$",
         views.ModelDetailView.as_view(),
         name="django-admindocs-models-detail",
     ),

django/contrib/flatpages/forms.py

@@ -10,7 +10,7 @@ class FlatpageForm(forms.ModelForm):
     url = forms.RegexField(
         label=_("URL"),
         max_length=100,
-        regex=r"^[-\w/\.~]+$",
+        regex=r"^[-\w/.~]+$",
         help_text=_(
             "Example: “/about/contact/”. Make sure to have leading and trailing "
             "slashes."

django/contrib/gis/db/models/lookups.py

@@ -273,7 +273,7 @@ class OverlapsLookup(GISLookup):
 class RelateLookup(GISLookup):
     lookup_name = "relate"
     sql_template = "%(func)s(%(lhs)s, %(rhs)s, %%s)"
-    pattern_regex = _lazy_re_compile(r"^[012TF\*]{9}$")
+    pattern_regex = _lazy_re_compile(r"^[012TF*]{9}$")
 
     def process_rhs(self, compiler, connection):
         # Check the pattern argument

django/contrib/gis/geometry.py

@@ -11,7 +11,7 @@ wkt_regex = _lazy_re_compile(
     r"(?P<wkt>"
     r"(?P<type>POINT|LINESTRING|LINEARRING|POLYGON|MULTIPOINT|"
     r"MULTILINESTRING|MULTIPOLYGON|GEOMETRYCOLLECTION)"
-    r"[ACEGIMLONPSRUTYZ0-9,\.\-\+\(\) ]+)$",
+    r"[ACEGIMLONPSRUTYZ0-9,.+() -]+)$",
     re.I,
 )
 json_regex = _lazy_re_compile(r"^(\s+)?\{.*}(\s+)?$", re.DOTALL)

django/contrib/staticfiles/storage.py

@@ -54,19 +54,19 @@ class HashedFilesMixin:
             (
                 (
                     r"""(?P<matched>import(?s:(?P<import>[\s\{].*?))"""
-                    r"""\s*from\s*['"](?P<url>[\.\/].*?)["']\s*;)"""
+                    r"""\s*from\s*['"](?P<url>[./].*?)["']\s*;)"""
                 ),
                 """import%(import)s from "%(url)s";""",
             ),
             (
                 (
                     r"""(?P<matched>export(?s:(?P<exports>[\s\{].*?))"""
-                    r"""\s*from\s*["'](?P<url>[\.\/].*?)["']\s*;)"""
+                    r"""\s*from\s*["'](?P<url>[./].*?)["']\s*;)"""
                 ),
                 """export%(exports)s from "%(url)s";""",
             ),
             (
-                r"""(?P<matched>import\s*['"](?P<url>[\.\/].*?)["']\s*;)""",
+                r"""(?P<matched>import\s*['"](?P<url>[./].*?)["']\s*;)""",
                 """import"%(url)s";""",
             ),
             (

django/db/models/functions/comparison.py

@@ -108,7 +108,7 @@ class Collate(Func):
     allowed_default = False
     # Inspired from
     # https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
-    collation_re = _lazy_re_compile(r"^[\w\-]+$")
+    collation_re = _lazy_re_compile(r"^[\w-]+$")
 
     def __init__(self, expression, collation):
         if not (collation and self.collation_re.match(collation)):

django/db/models/sql/query.py

@@ -52,7 +52,7 @@ FORBIDDEN_ALIAS_PATTERN = _lazy_re_compile(r"['`\"\]\[;\s]|--|/\*|\*/")
 
 # Inspired from
 # https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
-EXPLAIN_OPTIONS_PATTERN = _lazy_re_compile(r"[\w\-]+")
+EXPLAIN_OPTIONS_PATTERN = _lazy_re_compile(r"[\w-]+")
 
 
 def get_field_names_from_opts(opts):

django/template/base.py

@@ -632,7 +632,7 @@ filter_raw_string = r"""
          )?
  )""" % {
     "constant": constant_string,
-    "num": r"[-+\.]?\d[\d\.e]*",
+    "num": r"[-+.]?\d[\d.e]*",
     "var_chars": r"\w\.",
     "filter_sep": re.escape(FILTER_SEPARATOR),
     "arg_sep": re.escape(FILTER_ARGUMENT_SEPARATOR),

django/utils/dateparse.py

@@ -14,13 +14,13 @@ date_re = _lazy_re_compile(r"(?P<year>\d{4})-(?P<month>\d{1,2})-(?P<day>\d{1,2})
 
 time_re = _lazy_re_compile(
     r"(?P<hour>\d{1,2}):(?P<minute>\d{1,2})"
-    r"(?::(?P<second>\d{1,2})(?:[\.,](?P<microsecond>\d{1,6})\d{0,6})?)?$"
+    r"(?::(?P<second>\d{1,2})(?:[.,](?P<microsecond>\d{1,6})\d{0,6})?)?$"
 )
 
 datetime_re = _lazy_re_compile(
     r"(?P<year>\d{4})-(?P<month>\d{1,2})-(?P<day>\d{1,2})"
     r"[T ](?P<hour>\d{1,2}):(?P<minute>\d{1,2})"
-    r"(?::(?P<second>\d{1,2})(?:[\.,](?P<microsecond>\d{1,6})\d{0,6})?)?"
+    r"(?::(?P<second>\d{1,2})(?:[.,](?P<microsecond>\d{1,6})\d{0,6})?)?"
     r"\s*(?P<tzinfo>Z|[+-]\d{2}(?::?\d{2})?)?$"
 )
 
@@ -31,7 +31,7 @@ standard_duration_re = _lazy_re_compile(
     r"((?:(?P<hours>\d+):)(?=\d+:\d+))?"
     r"(?:(?P<minutes>\d+):)?"
     r"(?P<seconds>\d+)"
-    r"(?:[\.,](?P<microseconds>\d{1,6})\d{0,6})?"
+    r"(?:[.,](?P<microseconds>\d{1,6})\d{0,6})?"
     r"$"
 )
 
@@ -40,11 +40,11 @@ standard_duration_re = _lazy_re_compile(
 iso8601_duration_re = _lazy_re_compile(
     r"^(?P<sign>[-+]?)"
     r"P"
-    r"(?:(?P<days>\d+([\.,]\d+)?)D)?"
+    r"(?:(?P<days>\d+([.,]\d+)?)D)?"
     r"(?:T"
-    r"(?:(?P<hours>\d+([\.,]\d+)?)H)?"
-    r"(?:(?P<minutes>\d+([\.,]\d+)?)M)?"
-    r"(?:(?P<seconds>\d+([\.,]\d+)?)S)?"
+    r"(?:(?P<hours>\d+([.,]\d+)?)H)?"
+    r"(?:(?P<minutes>\d+([.,]\d+)?)M)?"
+    r"(?:(?P<seconds>\d+([.,]\d+)?)S)?"
     r")?"
     r"$"
 )

docs/conf.py

@@ -54,8 +54,8 @@ autosectionlabel_maxdepth = 2
 linkcheck_ignore = [
     # Special-use addresses and domain names. (RFC 6761/6890)
     r"^https?://(?:127\.0\.0\.1|\[::1\])(?::\d+)?/",
-    r"^https?://(?:[^/\.]+\.)*example\.(?:com|net|org)(?::\d+)?/",
-    r"^https?://(?:[^/\.]+\.)*(?:example|invalid|localhost|test)(?::\d+)?/",
+    r"^https?://(?:[^/.]+\.)*example\.(?:com|net|org)(?::\d+)?/",
+    r"^https?://(?:[^/.]+\.)*(?:example|invalid|localhost|test)(?::\d+)?/",
     # Pages that are inaccessible because they require authentication.
     r"^https://github\.com/[^/]+/[^/]+/fork",
     r"^https://code\.djangoproject\.com/github/login",

tests/validators/tests.py

@@ -690,24 +690,24 @@ class TestValidatorEquality(TestCase):
 
     def test_regex_equality(self):
         self.assertEqual(
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://"),
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://"),
         )
         self.assertNotEqual(
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://"),
-            RegexValidator(r"^(?:[0-9\.\-]*)://"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://"),
+            RegexValidator(r"^(?:[0-9.-]*)://"),
         )
         self.assertEqual(
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://", "oh noes", "invalid"),
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://", "oh noes", "invalid"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://", "oh noes", "invalid"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://", "oh noes", "invalid"),
         )
         self.assertNotEqual(
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://", "oh", "invalid"),
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://", "oh noes", "invalid"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://", "oh", "invalid"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://", "oh noes", "invalid"),
         )
         self.assertNotEqual(
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://", "oh noes", "invalid"),
-            RegexValidator(r"^(?:[a-z0-9\.\-]*)://"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://", "oh noes", "invalid"),
+            RegexValidator(r"^(?:[a-z0-9.-]*)://"),
         )
 
         self.assertNotEqual(
@@ -721,7 +721,7 @@ class TestValidatorEquality(TestCase):
         )
 
     def test_regex_equality_nocache(self):
-        pattern = r"^(?:[a-z0-9\.\-]*)://"
+        pattern = r"^(?:[a-z0-9.-]*)://"
         left = RegexValidator(pattern)
         re.purge()
         right = RegexValidator(pattern)