tag mapper: if [tag] is present, add [other tag]

[isarl]

Is there any way, using the Tag Mapper, to automatically add a tag if another tag is present?

For example, if a book has the High-Tech & Military Sci-Fi tag, I would like the Tag Mapper to add the Science Fiction tag for me, without removing the High-Tech & Military Sci-Fi tag.

[isarl]

I asked my initial question because I assumed that there would be a relevant verb in the drop-down list of verbs in the Tag Mapper (Remove, Replace, Keep, etc.) that could do what I wanted. But I have figured out how to do what I want in the absence of such a verb!

I noticed that:

The rules will be processed in order […] until either a "remove" or "keep" rule matches.

So I did some testing, and the below seems to work. Given some tag “extra” which I want to add when another tag “trigger” is present:

1. Replace the tag, if it is one of: trigger with the tag: trigger & extra

2. Split the tag, if it is one of: trigger & extra on the character: &

Now the trigger and extra tags will continue to be processed by any subsequent rules. Or if you wish, you can add Keep rules for either or both of them at this point, to prevent further processing of these tags.

Thank you for reading – hope this helps somebody!