Psr-3 placeholders are not replaced by MessagePlaceholderProcessor
>>> [!note] Migrated issue
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Reported by: [lussoluca](https://www.drupal.org/user/138068)
Related to !32
>>>
<p>With messages like:</p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br>$this</span><span style="color: #007700">-></span><span style="color: #0000BB">logger</span><span style="color: #007700">-></span><span style="color: #0000BB">info</span><span style="color: #007700">(</span><span style="color: #DD0000">"Processing element @element"</span><span style="color: #007700">, [</span><span style="color: #DD0000">'@element' </span><span style="color: #007700">=> </span><span style="color: #0000BB">entity</span><span style="color: #007700">-></span><span style="color: #0000BB">label</span><span style="color: #007700">()]);<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>Placeholders are correctly replaced: "Processing element label".</p>
<p>With messages like:</p>
<div class="codeblock">
<pre><span style="color: #000000"><span style="color: #0000BB"><?php<br>$this</span><span style="color: #007700">-></span><span style="color: #0000BB">logger</span><span style="color: #007700">-></span><span style="color: #0000BB">info</span><span style="color: #007700">(</span><span style="color: #DD0000">"Processing element {element}"</span><span style="color: #007700">, [</span><span style="color: #DD0000">'element' </span><span style="color: #007700">=> </span><span style="color: #0000BB">entity</span><span style="color: #007700">-></span><span style="color: #0000BB">label</span><span style="color: #007700">()]);<br></span><span style="color: #0000BB">?></span></span></pre></div>
<p>The message logged is "Processing element {element}"; this is the psr-3 format, and it must work.</p>
issue