Why doesn't xmlstarlet select all nodes?
Consider this example from w3schools:
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<span>2020-12-21 09:19</span>
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<p>Is this what you need?</p>
<pre><code>xml sel -t -m "//@category" -v "." -o " " books.xml
</code></pre>
<p>or to separate the results on each line</p>
<pre><code>xml sel -t -m "//@category" -v "." -n books.xml
</code></pre>
<p><strong>Update</strong></p>
<p>You're right, your XPath was good, you just need different parameters.</p>
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<cite>梦谈多话 </cite>
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<span>2020-12-21 09:20</span>
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<p>Regarding why the original doesn't work: XSLT 1.0 value-of is defined to work like XPath's string() function, and string(node-set) => string(first-node). See also Feature Request: value-of multiple nodes should concat values of all nodes</p>
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