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    <body><span class="vcard"><a class="email" href="mailto:miguelangelrv@libreoffice.org" title="m.a.riosv <miguelangelrv@libreoffice.org>"> <span class="fn">m.a.riosv</span></a>
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          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Document how to escape double quotes in text functions"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=113976">bug 113976</a>
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           <td>miguelangelrv@libreoffice.org
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Document how to escape double quotes in text functions"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=113976#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Document how to escape double quotes in text functions"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=113976">bug 113976</a>
              from <span class="vcard"><a class="email" href="mailto:miguelangelrv@libreoffice.org" title="m.a.riosv <miguelangelrv@libreoffice.org>"> <span class="fn">m.a.riosv</span></a>
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        <pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=137929" name="attach_137929" title="Sample showing no bug">attachment 137929</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=137929&action=edit" title="Sample showing no bug">[details]</a></span>
Sample showing no bug

I think the issue is with the search text not having double quotes as such but
as delimiters.

A1=CHAR(34)&"foo"&CHAR(34) = "foo"
=SUBSTITUTE(A1;"""foo""";"""bar""";1) = "bar"
A1="""foo""" = "foo"
=SUBSTITUTE(A1;"""foo""";"""bar""";1) = "bar"

It works as @Eike indication.</pre>
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