Charles Haley 8b9e10cd8a Take 2: Add an option to prevent a composite column having its value stored in an OPF. This is useful if the composite contains a large amount of data, for example images, and the value of the composite isn't needed for a client. The option is in the column definition, stored in "display" for the column.
The option removes one of the penalties of creating composites for the booklist that show notes when the user hovers over the column.

Risks: near zero. Nothing changes unless the option is changed from its default. If the option is changed then there is a risk that in some context the option will be ignored, resulting in the same behavior as before.

Take 2 notes: You are correct about the if. I had managed to corrupt my test data so I didn't see that the values for all non-composite columns were being emptied.
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calibre

calibre is an e-book manager. It can view, convert, edit and catalog e-books in all of the major e-book formats. It can also talk to e-book reader devices. It can go out to the internet and fetch metadata for your books. It can download newspapers and convert them into e-books for convenient reading. It is cross platform, running on Linux, Windows and macOS.

For more information, see the calibre About page.

Build Status

Screenshots

Screenshots page

Usage

See the User Manual.

Development

Setting up a development environment for calibre.

A tarball of the source code for the current calibre release.

Bugs

Bug reports and feature requests should be made in the calibre bug tracker at Launchpad. GitHub is only used for code hosting and pull requests.

Support calibre

calibre is a result of the efforts of many volunteers from all over the world. If you find it useful, please consider contributing to support its development. Donate to support calibre development.

Building calibre binaries

See Build instructions for instructions on how to build the calibre binaries and installers for all the platforms calibre supports.

calibre package versions in various repositories

Packaging Status

Description
The official source code repository for the calibre ebook manager
Readme GPL-3.0 360 MiB
Languages
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C 3.3%
C++ 3.1%
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