Quote:
Originally Posted by jcrawfordx
. . . Perhaps this phantom "Formats" problem is actually a bug that should be looked into someday???
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If the template in the 'phantom "Formats"' column is {:'
approximate_formats()'}, there is no bug. See ==>>
approximate_formats()
Quote:
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returns a comma-separated list of formats that at one point were associated with the book. There is no guarantee that this list is correct, although it probably is.
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In my Test library I have a column called #approx_formats/Approx Formats, which uses that template. It shows a single string e.g. "DOCX,EPUB,AZW3" in the book details panel, if I click on it calibre does a search e.g
#formats:"=DOCX,EPUB,AZW3" and shows me all the books that have that string in #approx_formats.
Maybe your crash is due to the fact that you have two columns with similar names, the built column
formats/Formats and the user defined custom column
#formats/Formats. I used a different name for my custom column because having them the same would have confused me
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You might want have a look at the
formats_paths() function. However, I am pretty sure this interrogates the file system, which will have a negative impact on performance -- hence the provision of the
approximate_formats function.
Added: I am using Win 10 Pro 1809 and calibre 3.47.1.
BR