From: Markus Armbruster <armbru@redhat.com>

re.match(r'^ *', ...) can't fail, but mypy doesn't know that and
complains:

    scripts/qapi/parser.py:444: error: Item "None" of "Match[str] | None" has no attribute "end"  [union-attr]

Work around by using must_match() instead.

Fixes: 8107ba47fd78 (qapi: Add documentation format validation)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20251105152219.311154-1-armbru@redhat.com>
---
 scripts/qapi/parser.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py
index 1bb1af7051..c3cf33904e 100644
--- a/scripts/qapi/parser.py
+++ b/scripts/qapi/parser.py
@@ -441,7 +441,7 @@ def get_doc_line(self) -> Optional[str]:
             self._literal_mode = True
             self._literal_mode_indent = 0
         elif self._literal_mode and line:
-            indent = re.match(r'^ *', line).end()
+            indent = must_match(r'\s*', line).end()
             if self._literal_mode_indent == 0:
                 self._literal_mode_indent = indent
             elif indent < self._literal_mode_indent:
-- 
2.43.0