base: document port rdependents (in port-dependents.1), https://trac.macports.org/ticket/44530

git-svn-id: https://svn.macports.org/repository/macports/trunk/base@123964 d073be05-634f-4543-b044-5fe20cf6d1d6

doc/port-dependents.1.txt

@@ -5,7 +5,8 @@ $Id$
 
 NAME
 ----
-port-dependents - List ports that depend on a given (installed) port
+port-dependents, port-rdependents - List ports that depend on a given
+(installed) port
 
 SYNOPSIS
 --------
@@ -13,6 +14,10 @@ SYNOPSIS
 *port* [*-D* 'portdir'] *dependents*
      [['portname' | 'pseudo-portname' | 'port-expressions' | 'port-url']]
 
+[cmdsynopsis]
+*port* [*-D* 'portdir'] *rdependents*
+     [['portname' | 'pseudo-portname' | 'port-expressions' | 'port-url']]
+
 DESCRIPTION
 -----------
 *port dependents* reports which ports depend upon a given (installed) port, if
@@ -33,9 +38,12 @@ This command will, however, not cover dependencies that are only present in
 non-default variants. For more information about pseudo-portname selectors, see
 man:port[1].
 
-The dependency relations printed by *port dependents* are the same that are used
-to determine if a port can be safely uninstalled. Ports that still have
-dependents installed cannot be uninstalled without either the
+*port rdependents* will print a tree of installed ports that depend on the given
+port.
+
+The dependency relations printed by *port dependents* and *port rdependents* are
+the same that are used to determine if a port can be safely uninstalled. Ports
+that still have dependents installed cannot be uninstalled without either the
 *--follow-dependents* or the *-f* flag. See man:port-uninstall[1] for more
 details.
 

doc/port-rdependents.1.soelim

@@ -0,0 +1 @@
+.so man1/port-dependents.1