Tags can now be filtered. For example,
hasaccepted:no is syntax for do not
show questions with accepted answers.
Why doesn't hasanswer:no remove
all questions with answers?
Why doesn't onhold:no remove all
questions that are on hold?
Is the syntax incorrect?
The syntax is explained on the search page under "Advanced Search Tips".
To filter out questions with answers, use answers:0
To filter out closed questions, use closed:0 or closed:no.
The "on hold" status is mostly a euphemism for "closed" and the search engine does not care about the distinction.
