[davidfor]

Originally Posted by ps67

He wants to do it because he can do it, it is his Kobo!

You might want to look at my posts. That is a statement I have made many times. It still doesn't stop me from wondering why in people do things. I completely understand why Jon wants to display the tags somewhere. I do not see a good reason not to display them all the time. So I am curious about the reason.

Also, asking the question can trigger a rethink. Elsewhere, Jon's question was "display tags in the series if there is no series", which makes some sense. Maybe when changing to using the subtitle he didn't rethink when to display it.

And he can do it because the driver plugin uses a template (or a function, it is not very clear the difference for me in that case: the function must be used in the template?), so one can use all the fantasy of the world to fill a field even when it should be empty: ie when there is no subtitle.

Let me explain: I would have thought that there is no need for a function to fill a field like the subtitle, if the book has the subtitle I will write it, if the book does not have it I will not write anything.

But in the plugin there is instead the possibility of displaying other things as a subtitle using tags or other fields, etc., thus increasing the user's freedom, even if it is a bit more complicated. And I respect this idea, don't get me wrong, only it took me a little longer to understand how it's done.

Firstly, Kobo is the only one that has "Subtitle" as a separate metadata entry. Calibre doesn't have the idea at all. Hence, you need to tell calibre how to populate the subtitle. That could be done by selecting a column. But, a template is a lot more flexible. It can be as simple as "use column x", or quite complex code. The suggestions above are relatively simple examples.

But, overall, I have no idea what you think you are saying. I completely understand how to do this (as I clearly demonstrated in my reply to Jon). And this isn't the first time I suggested using the subtitle for something else. Such as page or word counts. So I understand why people want to do something like this. But, it doesn't tell me with the reason for the choices people make. Knowing the reasons will usually help to give better answers to questions like Jon's.

And, for the record, when I refer to the Kobo Utilities plugin, which can be used to do this, I generally put the word "my" in front of it. And, I am the maintainer of the KoboTouch driver in calibre. So, hopefully I do understand all this.