afew: backport upstream fix for HeaderMatchingFilter error

srcpkgs/afew/patches/nullpointererror-fix.patch

@@ -0,0 +1,37 @@
+based on upstream commit d43508dc2bb456070192239d02fb8079b433781c
+backports fix: HeaderMatchingFilter: Gracefully handle missing headers
+
+diff --git a/afew/filters/HeaderMatchingFilter.py b/afew/filters/HeaderMatchingFilter.py
+index 5a735f7..95198d7 100644
+--- a/afew/filters/HeaderMatchingFilter.py
++++ b/afew/filters/HeaderMatchingFilter.py
+@@ -6,6 +6,8 @@
+ 
+ from afew.filters.BaseFilter import Filter
+ 
++from notmuch.errors import NullPointerError
++
+ import re
+ 
+ 
+@@ -22,10 +24,13 @@ class HeaderMatchingFilter(Filter):
+     def handle_message(self, message):
+         if self.header is not None and self.pattern is not None:
+             if not self._tag_blacklist.intersection(message.get_tags()):
+-                value = message.get_header(self.header)
+-                match = self.pattern.search(value)
+-                if match:
+-                    sub = (lambda tag:
+-                           tag.format(**match.groupdict()).lower())
+-                    self.remove_tags(message, *map(sub, self._tags_to_remove))
+-                    self.add_tags(message, *map(sub, self._tags_to_add))
++                try:
++                    value = message.get_header(self.header)
++                    match = self.pattern.search(value)
++                    if match:
++                        sub = (lambda tag:
++                               tag.format(**match.groupdict()).lower())
++                        self.remove_tags(message, *map(sub, self._tags_to_remove))
++                        self.add_tags(message, *map(sub, self._tags_to_add))
++                except NullPointerError:
++                    pass

srcpkgs/afew/template

@@ -1,8 +1,8 @@
 # Template file for 'afew'
 pkgname=afew
 version=3.0.1
-revision=7
-build_style=python3-module
+revision=8
+build_style=python3-pep517
 hostmakedepends="python3-setuptools_scm python3-Sphinx pkg-config"
 depends="notmuch-python3 python3-dkimpy python3-chardet notmuch"
 checkdepends="python3-pytest python3-freezegun $depends"