Import custom filtering rules to blocklists or whitelists

[ghost]

Custom filtering rules for temporally purposes then this's an option for import selected rules to permanent local lists easily #817 also may related #970

Import Steps

• highlight necessary rules
• click import to local lists
• select blocklists or whitelists
• select existing list to import

[Aikatsui]

#1449

[ameshkov]

Actually, it's now possible to add local lists when you add filter lists so we can consider this done