<p></p>
<p><b>@k-yle</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/6197#discussion_r2206938166">config/initializers/tag2link.rb</a>:</p>
<pre style='color:#555'>> +TAG2LINK = lambda {
+  # the JSON data is an array with duplicate entries, which is not efficient for lookups.
+  # So, convert it to a hash and only keep the item with the best rank.
+  array = JSON.parse(Rails.root.join("node_modules/tag2link/index.json").read)
+
+  ranks = %w[deprecated normal preferred].freeze
+
+  output = {}
+
+  all_keys = array.map { |item| item["key"] }.uniq
+
+  all_keys.each do |key|
+    # for each key, find the item with the best rank
+    best_definition = array
+                      .select { |item| item["key"] == key }
+                      .max_by { |item| ranks.index(item["rank"]) }
</pre>
<details>
<summary>This problem seems to only affect 17 tags, most of which are quite obscure (click to expand)</summary>
<div class="highlight highlight-source-python" dir="auto"><pre class="notranslate"><span class="pl-s1">de</span>:<span class="pl-smi">amtlicher_gemeindeschluessel</span> <span class="pl-c1">=</span> <span class="pl-c1">7</span>
<span class="pl-s1">fhrs</span>:<span class="pl-smi">id</span> <span class="pl-c1">=</span> <span class="pl-c1">2</span>
<span class="pl-s1">hashtags</span> <span class="pl-c1">=</span> <span class="pl-c1">42</span>
<span class="pl-s1">icao</span> <span class="pl-c1">=</span> <span class="pl-c1">8</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">EU</span>:<span class="pl-smi">bwid</span> <span class="pl-c1">=</span> <span class="pl-c1">4</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">FR</span>:<span class="pl-smi">MemorialGenWeb</span> <span class="pl-c1">=</span> <span class="pl-c1">2</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">FR</span>:<span class="pl-smi">museofile</span> <span class="pl-c1">=</span> <span class="pl-c1">2</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">FR</span>:<span class="pl-smi">SIREN</span> <span class="pl-c1">=</span> <span class="pl-c1">5</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">ibnr</span> <span class="pl-c1">=</span> <span class="pl-c1">11</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">INEP</span> <span class="pl-c1">=</span> <span class="pl-c1">2</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">INSEE</span> <span class="pl-c1">=</span> <span class="pl-c1">4</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">ruian</span> <span class="pl-c1">=</span> <span class="pl-c1">3</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">vatin</span> <span class="pl-c1">=</span> <span class="pl-c1">4</span>
<span class="pl-s1">ref</span>:<span class="pl-smi">WDPA</span> <span class="pl-c1">=</span> <span class="pl-c1">2</span>
<span class="pl-c1">*</span>:<span class="pl-s1">mmsi</span> <span class="pl-c1">=</span> <span class="pl-c1">2</span>
<span class="pl-s1">uic_ref</span> <span class="pl-c1">=</span> <span class="pl-c1">6</span>
<span class="pl-s1">woeid</span> <span class="pl-c1">=</span> <span class="pl-c1">2</span></pre></div>
</details>
<p dir="auto">Maybe we should skip these ones if there are multiple matches with equal probability? If someone complains, then perhaps they should fix the problem upstream</p>

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