Quote:
Originally Posted by barium
A related question about searching:
What do the equals sign and quotes that calibre adds to searches do?
For example, if you use the category browser to show only epub books, it inserts the following string into the search box: formats:"=EPUB"
Are those equals signs and quotes ever necessary when you're manually entering a search?
Also, does the singular and plural version of the operators the category browser adds to the search box always work? (The category browser adds plural versions of "authors" and "formats", but "author" and "format" seem to work, too.)
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The help page for search
is here. The equals sign is for an exact match rather than a "contains" match. The quotes are only needed if you need to add spaces to your expression.
As for the author/authors thing - I believe those are just aliases and so either works. I would guess it is just to make the search UI more "user friendly" for people guessing a metadata field name.