https://issues.apache.org/ooo/show_bug.cgi?id=123799

            Bug ID: 123799
        Issue Type: DEFECT
           Summary: insert columns causes very slow recalc
           Product: Calc
           Version: 4.0.1
          Hardware: PC
                OS: Windows 7
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: programming
          Assignee: issues@openoffice.apache.org
          Reporter: p...@solarandthermal.com
                CC: issues@openoffice.apache.org

Created attachment 82029
  --> https://issues.apache.org/ooo/attachment.cgi?id=82029&action=edit
BOM spreadsheet

inserting 4 columns into 200 row workbook takes minutes to recalc

The problem is bad, but it is getting worse and this delay was the proverbial
"straw that broke..."

Heavy use of MATCH() to recursively examine columns for previous instances of
text to create hierarchy of parts in assemblies.

Uses borrowed macro to generate a short and unique 'hash' for use in unique
part-number.

This workbook is primarily a text processor.  The number crunching has been
omitted.

This concept worked much better in Version 3.6 I was disappointed with the 4.0
upgrade, someone broke something, probably the "dirty-bit' that causes
recalculations on cell updates.

Feel free to contact me with questions.  I'd like to do more, but don't know
where/how to contribute to the coding effort.

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