SECURITY UPDATE: Arbitrary Ex command execution during C omni-completion: the typeref/typename tag field is interpolated unescaped into the :vimgrep pattern in s:StructMembers() in runtime/autoload/ccomplete.vim, so a crafted tags file can close the search pattern and append an arbitrary Ex command when completing a struct/union member
debian/patches/CVE-2026-59858.patch: wrap the type field with escape(typename, '/') before inserting it into the :vimgrep pattern in s:StructMembers() so it can no longer close the search pattern and start a new Ex command