Hi, I have a paid theme where product tags starting with two underscores(__) are excluded from filter by tag in collection pages. I sell books and have added the book authors using a metafield app, but I noticed customers can't search this products by their author because shopify doesn't search product metafields value. So I tried adding the book authors as a tag with double underscore as prefix(__Author Name), but I noticed shopify search still doesn't get these products when I search for the Author Name except I include the two underscore in the search. So is there a way I could modify the search file to ignore the two underscores during search?
Ultimate Filter & Search allows you to control the search index by trimming the prefix "__" in Tags. Your customers can search by Author name and get relevant results.
It offers 14-days free trial at https://apps.shopify.com/ultimate-search-and-filter-1
You can chose an unpublished theme to set up the widget and test all the advanced features without affecting your live store.
I hope it can help.