feat: trust topmost installed dependents

README.md

@@ -146,6 +146,7 @@ other command suffixes.
 | `N-` | exclude from this run (toggle; `N-` again re-includes); shown with a `-` marker |
 | `Nx` | purge now, with its now-unneeded dependencies: the purge is simulated first and the prompt lists everything it removes (`Purge su-dummy-a now? This also removes: su-dummy-b [y/N]`); the answer is read from the same stdin; the rows of every removed package leave the list. `x` refuses when other installed packages depend on the target, like `pacman -Rns`; purge the dependents first (`not purged: su-dummy-b is required by: su-dummy-a - purge the dependents first`). Rows with old version `-` (new dependencies, not installed) cannot be purged |
 | `N+` | trust forever: write it and its installed dependency closure to the statefile; the row leaves the list. Rows this hides are re-included if they were excluded (a trusted package is upgraded) |
+| `N++` | follow installed dependents recursively and trust each topmost package and its installed dependencies, even when a topmost package is not in the update list |
 | `*+` / `*-` | `+` / `-` for every listed package (`*-` is an all-or-nothing toggle: when all are excluded it re-includes them) |
 | `a` | show packages trusted during this session again, marked with `=`; packages already trusted before the session remain hidden |
 | `l` | redraw the list |