http://eweiibe6tdjsdprb4px6rqrzzcsi22m4koia44kc5pcjr7nec2rlxyad.onion/help/user/search/index.md
Global search ignores and logs as abusive any search that includes:
Fewer than two characters
A term longer than 100 characters (URL search terms must not exceed 200 characters)
A stop word only (for example, the , and , or if )
An unknown scope
group_id or project_id that is not completely numeric
repository_ref or project_ref with special characters not allowed by Git refname
Global search only flags with an error any search...