* doc/examples/configure-index:

[apt.git] / apt-pkg / tagfile.cc

diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 1fa007940e0c256f96b94af29cdfffbf15ec98f6..040562fffbb0d5f7ba062edbb068953a58bfe5ea 100644 (file)
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -166,12 +166,12 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long Offset)
 // ---------------------------------------------------------------------
 /* This looks for the first double new line in the data stream. It also
    indexes the tags in the section. This very simple hash function for the
-   first 3 letters gives very good performance on the debian package files */
+   last 8 letters gives very good performance on the debian package files */
 inline static unsigned long AlphaHash(const char *Text, const char *End = 0)
 {
    unsigned long Res = 0;
    for (; Text != End && *Text != ':' && *Text != 0; Text++)
-      Res = (unsigned long)(*Text) ^ (Res << 2);
+      Res = ((unsigned long)(*Text) & 0xDF) ^ (Res << 1);
    return Res & 0xFF;
 }