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After sprinkling File::Find with print statements I find that in the latest version of File::Find does this at line 444:

                    if (-d _) {

This is the code that decides whether or not the thing it has found is a directory, and whether to recurse into it. Under Dancer this test fails for the subdirectories and it never recurses into them. But what is _ meant to be? Is that a thing I don't know about? If I change it to $_ it does recurse into the directory, and I end up with a valid XLSX file. There are lots of uses of an underscore on its own across this module.

In reply to Re^2: Incomplete file write under Dancer2 by realflash
in thread Incomplete file write under Dancer2 by realflash

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