[Libreoffice-bugs] [Bug 89158] Autofilter no longer needs Empty and Not Empty options

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=89158

--- Comment #9 from Regina Henschel <rb.henschel at t-online.de> ---
Created attachment 138747
  --> https://bugs.documentfoundation.org/attachment.cgi?id=138747&action=edit
Test for "empty"

Set a filter on column C and examine the behavior.

An empty cell is
 <table:table-cell/>
in file format.

An empty string is
  <table:table-cell office:value-type="string" calcext:value-type="string">
      <text:p/>
  </table:table-cell>
in file format.

You can have an empty string as result of a formula, e.g. ="".
You can never have an empty cell as result of a formula, because the cell
content is a formula and therefore the cell is not empty.

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