[Bug 1705702] [NEW] amarock automatic playlist generator tagmatch does not work

[PascalC]

Public bug reported:

Theses APL do not work for my collection. Even the Example given with
amarok distribution. No result is returned and no message is popped up
to notify it.

pascal at minipc:~/Musique$ cat classiques.xml 
<?xml version="1.0" encoding="UTF-8"?>
<playlistgenerator>
  <generatorpreset title="classiques">
    <constrainttree>
      <group matchtype="any">
        <constraint field="genre" comparison="3" invert="false" type="TagMatch" value="Classical" strictness="0.1"/>
      </group>
    </constrainttree>
  </generatorpreset>
</playlistgenerator>

pascal at minipc:~/Musique$ cat cat Exemple\ 2 \:\ rock\ ou\ musique\ pop.xml 
cat: cat: Aucun fichier ou dossier de ce type
<?xml version="1.0" encoding="UTF-8"?>
<playlistgenerator>
  <generatorpreset title="Exemple 2 : rock ou musique pop">
    <constrainttree>
      <group matchtype="any">
        <constraint field="genre" comparison="3" invert="false" type="TagMatch" value="Rock" strictness="1"/>
        <constraint field="genre" comparison="3" invert="false" type="TagMatch" value="Pop" strictness="1"/>
      </group>
    </constrainttree>
  </generatorpreset>
</playlistgenerator>

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: amarok 2:2.8.0-0ubuntu9
ProcVersionSignature: Ubuntu 4.10.0-26.30-lowlatency 4.10.17
Uname: Linux 4.10.0-26-lowlatency x86_64
ApportVersion: 2.20.4-0ubuntu4.5
Architecture: amd64
CurrentDesktop: KDE
Date: Fri Jul 21 15:07:41 2017
InstallationDate: Installed on 2016-05-14 (432 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: amarok
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: amarok
     Importance: Unknown
         Status: Unknown

** Affects: amarok (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages zesty

** Bug watch added: KDE Bug Tracking System #382454
   https://bugs.kde.org/show_bug.cgi?id=382454

** Also affects: amarok via
   https://bugs.kde.org/show_bug.cgi?id=382454
   Importance: Unknown
       Status: Unknown

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Title:
  amarock automatic playlist generator tagmatch does not work

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