As of r55615 , which has gone live on Wikipedia yesterday, the
maximum limit for list=search is 50 results for regular users and 500
for sysops and bots. This is down from 500/5000 because search queries
using the maximum limit were causing performance issues.
If you specify srlimit=100 or any number higher than your new maximum
limit, you'll get an error message. If you specify srlimit=max ,
everything will keep working, but you'll get fewer results.
Roan Kattouw (Catrope)