prevent row 0 cells
Created originally on Bitbucket by jeffwong (Jeff Wong)
I was able to request a row 0 cell (like AQ0) and was able to write that to an XLSX file.
Excel is unable to open the file because it says it's damaged.
This problem was hard to diagnose because when you look at the XML file, everything looks OK. I was only able to find the bug by manually constructing the row and using diff to compare against a working file.
This is one of those bugs that stares you in the face until you do something accidental to draw it out.