Using Writer's Mail Merge Wizard, on step 3 "Select Address List"/"Insert Address Block", use the "Select Address List" button, then click [ Add ] button to open File Open dialog. The filter list in that dialog has (on Windows, using native dialogs): - All files (*) - Address lists(*.*) - LibreOffice Base (*.odb) - LibreOffice Calc (*.ods;*.sxc) - LibreOffice Writer (*.odt;*.sxw) - LibreOffice dBase (*.dbf) - LibreOffice Microsoft Excel (*.xls;*.xlsx) - LibreOffice Microsoft Word (*.doc;*.docx) - LibreOffice Plain text (*.txt) - LibreOffice Text Comma Separated (*.csv) - LibreOffice Microsoft Access (*.mdb;*.mde) - LibreOffice Microsoft Access 2007 (*.accdb,*.accde) The problems with this list: 1. Note absent space between text and opening parenthesis in "Address lists" entry, which is inconsistent. 2. The "Address lists" entry shows the "everything" mask *.*, but only shows some file types from the entries below it (e.g., selecting it will not show myfile.ABC); 3. The "Address lists" entry doesn't list ODB, MDB, MDE, ACCDB, and ACCDE present in the entries below it.
Should those items - LibreOffice dBase (*.dbf) - LibreOffice Microsoft Excel (*.xls;*.xlsx) - LibreOffice Microsoft Word (*.doc;*.docx) - LibreOffice Plain text (*.txt) - LibreOffice Text Comma Separated (*.csv) - LibreOffice Microsoft Access (*.mdb;*.mde) - LibreOffice Microsoft Access 2007 (*.accdb,*.accde) be like - dBase (*.dbf) - Microsoft Excel (*.xls;*.xlsx) - Microsoft Word (*.doc;*.docx) - Plain text (*.txt) - Text Comma Separated (*.csv) - Microsoft Access (*.mdb;*.mde) - Microsoft Access 2007 (*.accdb,*.accde) ???
(In reply to Roman Kuznetsov from comment #1) He, ignore the LibreOffice in the beginning (my mistake, I copy-pasted carelessly :))
Mike Kaganski committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/faa88099d842b83365fa86a661dc56f0031a9b29 tdf#149947: simplify filter list creation It will be available in 7.5.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.