title: Get data out of "c(\"a\", \"b\")" format
body: <p>I have a string <code>"c(\"AV\", \"IM\")"</code>, which I'm trying to transform into the string <code>"AV IM"</code>. </p>
  
  <p>My issue is that I can't <code>unlist()</code> or <code>flatten()</code> this, as it's a character, and neither <code>paste()</code> nor <code>stringr::str_c()</code> work, since it's technically still 1 character value.</p>
  
  <p>Any ideas how I can do this?</p>
  
  <p>Tidyverse solutions preferred, if possible.</p>
  
  <p>EDIT: I know this can be solved via regex, but I feel like this is more a "fundamental" problem to be solved string-level than it is a regex problem, if that makes any sense.</p>