- After a new rule is saved in Settings > Filters, a notice offers
"Apply to N existing messages in Inbox" when the rule would change
mail already there (the same check and batch actions as rules made
from a message).
- "Stop processing" is no longer an action. The checkbox "Don't apply
later rules" does it; an old rule with the action opens with it
folded into the checkbox, and what came after the stop (which never
ran) is dropped.
- "matches regex" and the raw Sieve editor show only with advanced
settings on (the editor stays for a script only it can change).
- "Match all conditions" / "Match any condition", no capitals.
- The folder picker names folders as the sidebar does, indented, and
leaves out Drafts, Sent and Scheduled unless the rule already uses one.
The regex test now turns on advanced settings first, and the focus
tests open the raw editor with advanced settings on, since both are
advanced now.