Lint: Explictly allow all valid RFC 2822 line continuations in headers

Author: CAM-Gerlach

.pre-commit-config.yaml

@@ -103,15 +103,15 @@ repos:
       - id: validate-author
         name: "'Author' must be list of 'Name <email@example.com>, ...'"
         language: pygrep
-        entry: '(?<=\n)Author:(?:(?!((( +|\n {8})[^!#$%&()*+,/:;<=>?@\[\\\]\^_`{|}~]+( <[\w!#$%&''*+\-/=?^_{|}~.]+(@| at )[\w\-.]+\.[A-Za-z0-9]+>)?)(,|(?=\n[^ ])))+\n(?=[A-Z])))'
+        entry: '(?<=\n)Author:(?:(?!((( +|\n {1,8})[^!#$%&()*+,/:;<=>?@\[\\\]\^_`{|}~]+( <[\w!#$%&''*+\-/=?^_{|}~.]+(@| at )[\w\-.]+\.[A-Za-z0-9]+>)?)(,|(?=\n[^ ])))+\n(?=[A-Z])))'
         args: [--multiline]
         files: '^pep-\d+\.rst$'
         types: [text]
 
       - id: validate-author-legacy
         name: "Legacy 'Author' must be a list of names/emails"
         language: pygrep
-        entry: '(?<=\n)Author:(?:(?!((((( +|\n {8})[^!#$%&()*+,/:;<=>?@\[\\\]\^_`{|}~]+( <[\w!#$%&''*+\-/=?^_{|}~.]+(@| at )[\w\-.]+\.[A-Za-z0-9]+>)?)(,|(?=\n[^ ])))+)|(((( +|\n {8})[\w!#$%&''*+\-/=?^_{|}~.]+(@| at )[\w\-.]+\.[A-Za-z0-9]+) \(([^!#$%&()*+,/:;<=>?@\[\\\]\^_`{|}~]+)\)(,|(?=\n[^ ])))+))\n(?=[A-Z])))'
+        entry: '(?<=\n)Author:(?:(?!((((( +|\n {1,8})[^!#$%&()*+,/:;<=>?@\[\\\]\^_`{|}~]+( <[\w!#$%&''*+\-/=?^_{|}~.]+(@| at )[\w\-.]+\.[A-Za-z0-9]+>)?)(,|(?=\n[^ ])))+)|(((( +|\n {1,8})[\w!#$%&''*+\-/=?^_{|}~.]+(@| at )[\w\-.]+\.[A-Za-z0-9]+) \(([^!#$%&()*+,/:;<=>?@\[\\\]\^_`{|}~]+)\)(,|(?=\n[^ ])))+))\n(?=[A-Z])))'
         args: [--multiline]
         files: '^pep-\d+\.(rst|txt)$'
         types: [text]
@@ -183,7 +183,7 @@ repos:
       - id: validate-post-history
         name: "'Post-History' must be '`DD-mmm-YYYY <Thread URL>`__, ...'"
         language: pygrep
-        entry: '(?<=\n)Post-History:(?:(?! ?\n|((( +|\n {14})(([0-2][0-9]|(3[01]))-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(199[0-9]|20[0-9][0-9])|`([0-2][0-9]|(3[01]))-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(199[0-9]|20[0-9][0-9]) <https://((discuss\.python\.org/t/([\w\-]+/)?\d+/?)|(mail\.python\.org/pipermail/[\w\-]+/\d{4}-[A-Za-z]+/[A-Za-z0-9]+\.html)|(mail\.python\.org/archives/list/[\w\-]+@python\.org/thread/[A-Za-z0-9]+/?))>`__)(,|(?=\n[^ ])))+\n(?=[A-Z\n]))))'
+        entry: '(?<=\n)Post-History:(?:(?! ?\n|((( +|\n {1,14})(([0-2][0-9]|(3[01]))-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(199[0-9]|20[0-9][0-9])|`([0-2][0-9]|(3[01]))-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(199[0-9]|20[0-9][0-9]) <https://((discuss\.python\.org/t/([\w\-]+/)?\d+/?)|(mail\.python\.org/pipermail/[\w\-]+/\d{4}-[A-Za-z]+/[A-Za-z0-9]+\.html)|(mail\.python\.org/archives/list/[\w\-]+@python\.org/thread/[A-Za-z0-9]+/?))>`__)(,|(?=\n[^ ])))+\n(?=[A-Z\n]))))'
         args: [--multiline]
         files: '^pep-\d+\.(rst|txt)$'
         types: [text]