Comment 1 by manshulvbelani on 2015-09-29 10:26
The code for this issue is available in branch in_t5313 at url:
​https://bitbucket.org/manish_agrawal/nvda

Also there is an alternate approach possible.Instead of taking the address of selection, we can get the number of blocks selected using selection.areas.count and then for each area we can get the address and content of first and last cell of that particular area/block. The code snippet for this alternate approach is given below:

text""
selection=self.excelRangeObject
selectedBlocksCount=selection.Areas.Count
for item in range(1,selectedBlocksCount+1):
firstCellAddress=self.excelRangeObject.Areas(item).Cells(1,1).Address(False,False,xlA1,False)
lastCellAddress=self.excelRangeObject.Areas(item).Cells(selection.Areas(item).Rows.Count, selection.Areas(item).Columns.Count).Address(False,False,xlA1,False)
firstCellContent=self.excelRangeObject.Areas(item).Cells(1,1).Text
lastCellContent=self.excelRangeObject.Areas(item).Cells(selection.Areas(item).Rows.Count,
selection.Areas(item).Columns.Count).Text
text+= _("{firstAddress} {firstContent} through {lastAddress} {lastContent} ").format(firstAddress=firstCellAddress,firstContent=firstCellContent,lastAddress=lastCellAddress,lastContent=lastCellContent)
return text

Please review the code and let me know if any changes are required.
Thanks!

@michaelDCurran (our resident MS Office accessibility in-charge) Just a friendly reminder to review this almost 2-year-old code submission.

@ManshulBelani is it possible to raise a pull request if this is still an issue?
I cannot reproduce it completely in NVDA last Alpha on Windows 10 1809 Update with MS Excel 2016. However, NVDA repeats the first selected cell and the last one twice. If I am on a1 and go to b3 with down and right arrow, NVDA announced "a1 through a1 through b3 through b3". Actually it should only announce "a1 through b3".
cc: @michaelDCurran