When looking if Provides match, OR them with the normal patches

Simply overriding the value caused patterns that previously matched
a real package name to not match anymore.

Closes: #760868

diff --git a/cmdline/apt-cache.cc b/cmdline/apt-cache.cc
index a0322498652954073f2ba4cc410af21c879ecdaf..75337fa0776c9a0650a7dbc87ac360c8c79a408d 100644 (file)
--- a/cmdline/apt-cache.cc
+++ b/cmdline/apt-cache.cc
@@ -1440,7 +1440,7 @@ static bool Search(CommandLine &CmdL)
 
         size_t const PrvPatternOffset = id * NumPatterns;
         for (unsigned I = 0; I < NumPatterns; ++I)
 
         size_t const PrvPatternOffset = id * NumPatterns;
         for (unsigned I = 0; I < NumPatterns; ++I)

-           PatternMatch[PrvPatternOffset + I] = PatternMatch[PatternOffset + I];
+           PatternMatch[PrvPatternOffset + I] |= PatternMatch[PatternOffset + I];

       }
    }
 
       }
    }