From 557aed9806b59bebac33f4589bafc25fcb8a2728 Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <julian.klode@canonical.com>
Date: Mon, 27 Feb 2023 14:41:52 +0100
Subject: Use a more gitignore style matching

Use a rightmost match for / so that if we end up with a Section: a/b/c,
a 'c' matcher still matches.

If the section does not contain any /, it can be matched using /pattern,
e.g. /c only matches Section: c, but not Section: a/b/c.
---
 cmdline/apt-mark.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'cmdline')

diff --git a/cmdline/apt-mark.cc b/cmdline/apt-mark.cc
index 46d3ca5b8..3f3b008ba 100644
--- a/cmdline/apt-mark.cc
+++ b/cmdline/apt-mark.cc
@@ -163,10 +163,10 @@ static bool SectionInSubTree(char const * const SubTree, std::string_view Needle
 {
    if (ConfigValueInSubTree(SubTree, Needle))
       return true;
-   auto const sub = Needle.find('/');
+   auto const sub = Needle.rfind('/');
    if (sub == std::string_view::npos)
    {
-      std::string special{"<undefined>/"};
+      std::string special{"/"};
       special.append(Needle);
       return ConfigValueInSubTree(SubTree, special);
    }
-- 
cgit v1.2.3-70-g09d2