[MacPorts] #52303: `port uninstall --follow-dependents` uninstalls more ports than `port rdependents` reports

[MacPorts]

#52303: `port uninstall --follow-dependents` uninstalls more ports than `port
rdependents` reports
---------------------+--------------------------------
  Reporter:  ksze    |      Owner:  macports-tickets@…
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  base    |    Version:  2.3.4
Resolution:          |   Keywords:
      Port:          |
---------------------+--------------------------------

Comment (by barracuda156):

 Replying to [comment:1 jmroot]:
 > The issue may have been that this loop assumes that the identifiers
 refer to the same registry entries across the uninstall operation, which
 potentially deletes and opens multiple entries:
 https://github.com/macports/macports-
 base/blob/v2.3.4/src/registry2.0/portuninstall.tcl#L123
 >
 > That assumption should actually hold after
 [fc212a0b550ed961d07c261c715ca83580deac56/macports-base], so this may have
 been fixed incidentally.

 For some reason this command does not work at all for me. It only
 uninstalls a port being specified, leaving dependents broken but
 installed:

 {{{
 svacchanda at Sergeys-MacBook-Air ~ % sudo port uninstall --follow-dependents
 R-CRAN-recommended
 The following versions of R-CRAN-recommended are currently installed:
  1) R-CRAN-recommended @1.0.0_0
  2) R-CRAN-recommended @1.0.0_1 (active)
 . . .
 Continue? [y/N]: y
 Warning: Uninstall forced.  Proceeding despite dependencies.
 --->  Deactivating R-CRAN-recommended @1.0.0_1
 --->  Cleaning R-CRAN-recommended
 --->  Uninstalling R-CRAN-recommended @1.0.0_1
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/52303#comment:2>
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