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<body class='hmmessage'><div dir='ltr'>Hi all,<br><br>today I noticed a bug in LineMergeFilter. I am not yet sure<br>how to fix it.<br>I has at least a bad impact on performance, maybe it also<br>causes redundant data in the map. <br><br>It merges for each resolution also the lines of all higher resolutions,<br>which are later simply dropped. The bug is that it modifies the original<br>line objects instead of copies, so I assume that some lines are saved multiple<br>times, once as part of a merged line, once as single line.<br><br>No need to wait for a fix, afaik maps are okay.<br><br>Gerd<br>                                            </div></body>
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