From 9282c9094ab3e77cebe90e97b2f9a5fc21463e2f Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <julian.klode@canonical.com>
Date: Thu, 15 Aug 2019 13:32:54 +0200
Subject: Add ?broken pattern

This matches all packages that have broken dependencies in the
installed version or the version selected for install.
---
 apt-pkg/cachefilter-patterns.cc    |  2 ++
 apt-pkg/cachefilter-patterns.h     | 12 ++++++++++++
 doc/apt-patterns.7.xml             |  3 +++
 test/integration/test-apt-patterns |  3 +++
 4 files changed, 20 insertions(+)

diff --git a/apt-pkg/cachefilter-patterns.cc b/apt-pkg/cachefilter-patterns.cc
index 0f23890b4..a180cf78e 100644
--- a/apt-pkg/cachefilter-patterns.cc
+++ b/apt-pkg/cachefilter-patterns.cc
@@ -212,6 +212,8 @@ std::unique_ptr<APT::CacheFilter::Matcher> PatternParser::aPattern(std::unique_p
       return std::make_unique<APT::CacheFilter::PackageArchitectureMatchesSpecification>(aWord(node->arguments[0]));
    if (node->matches("?automatic", 0, 0))
       return std::make_unique<Patterns::PackageIsAutomatic>(file);
+   if (node->matches("?broken", 0, 0))
+      return std::make_unique<Patterns::PackageIsBroken>(file);
    if (node->matches("?config-files", 0, 0))
       return std::make_unique<Patterns::PackageIsConfigFiles>();
    if (node->matches("?false", 0, 0))
diff --git a/apt-pkg/cachefilter-patterns.h b/apt-pkg/cachefilter-patterns.h
index 7770385c9..c219e5bcd 100644
--- a/apt-pkg/cachefilter-patterns.h
+++ b/apt-pkg/cachefilter-patterns.h
@@ -128,6 +128,18 @@ struct PackageIsAutomatic : public PackageMatcher
    }
 };
 
+struct PackageIsBroken : public PackageMatcher
+{
+   pkgCacheFile *Cache;
+   explicit PackageIsBroken(pkgCacheFile *Cache) : Cache(Cache) {}
+   bool operator()(pkgCache::PkgIterator const &Pkg) override
+   {
+      assert(Cache != nullptr);
+      auto state = (*Cache)[Pkg];
+      return state.InstBroken() || state.NowBroken();
+   }
+};
+
 struct PackageIsConfigFiles : public PackageMatcher
 {
    bool operator()(pkgCache::PkgIterator const &Pkg) override
diff --git a/doc/apt-patterns.7.xml b/doc/apt-patterns.7.xml
index 64dad4dd4..e1c64de8e 100644
--- a/doc/apt-patterns.7.xml
+++ b/doc/apt-patterns.7.xml
@@ -72,6 +72,9 @@
      <varlistentry><term><code>?automatic</code></term>
      <listitem><para>Selects packages that were installed automatically.</para></listitem>
      </varlistentry>
+     <varlistentry><term><code>?broken</code></term>
+     <listitem><para>Selects packages that have broken dependencies.</para></listitem>
+     </varlistentry>
      <varlistentry><term><code>?config-files</code></term>
      <listitem><para>Selects packages that are not fully installed, but have solely residual configuration files left.</para></listitem>
      </varlistentry>
diff --git a/test/integration/test-apt-patterns b/test/integration/test-apt-patterns
index b84605256..e566c6bd2 100755
--- a/test/integration/test-apt-patterns
+++ b/test/integration/test-apt-patterns
@@ -116,6 +116,9 @@ testsuccessequal "Listing...
 automatic1/now 1.0 i386 [installed,local]
 automatic2/now 1.0 i386 [installed,local]" apt list '?automatic'
 
+testsuccessequal "Listing...
+broken/now 1.0 i386 [installed,local]" apt list '?broken'
+
 testsuccessequal "Listing...
 conf-only/now 1.0 i386 [residual-config]" apt list '?config-files'
 
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