<blockquote>
<p>I've tried using the Send Selection To --> interface but it doesn't paste back across the vertical selection.</p>
</blockquote>
<p>Yep thats known behaviour see also <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="102919931" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany/issues/625" data-hovercard-type="issue" data-hovercard-url="/geany/geany/issues/625/hovercard" href="https://github.com/geany/geany/issues/625">#625</a> <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="124129729" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany/issues/841" data-hovercard-type="issue" data-hovercard-url="/geany/geany/issues/841/hovercard" href="https://github.com/geany/geany/issues/841">#841</a> <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="124679416" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany/issues/850" data-hovercard-type="issue" data-hovercard-url="/geany/geany/issues/850/hovercard" href="https://github.com/geany/geany/issues/850">#850</a> <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="161554752" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany/issues/1083" data-hovercard-type="issue" data-hovercard-url="/geany/geany/issues/1083/hovercard" href="https://github.com/geany/geany/issues/1083">#1083</a> several of which were opened by or commented on by one@AdamDanischewski (mentioning no names :)</p>
<p>This whole thing will need to be examined if Geany ever moves to Scintilla 4 where rectangular selections have become multi-selections if I remember the Scintilla ML discussion correctly.</p>

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