Add a 'user' command, analogous to 'root' but jumps to a pubnix user's capsule if the URL starts with ~username.

src/av98/client.py

@@ -122,6 +122,13 @@ class GeminiItem():
     def root(self):
         return GeminiItem(self._derive_url("/"))
 
+    def user(self):
+        if not self.path.startswith("/~"):
+            raise ValueError("This is not a tilde URL.")
+        new_path = self.path.split("/")[1] + "/"
+        print(new_path)
+        return GeminiItem(self._derive_url(new_path))
+
     def up(self):
         pathbits = list(os.path.split(self.path.rstrip('/')))
         # Don't try to go higher than root
@@ -1046,6 +1053,14 @@ Slow internet connection?  Use 'set timeout' to be more patient.""")
         """Go to root selector of the server hosting current item."""
         self._go_to_gi(self.gi.root())
 
+    @needs_gi
+    def do_user(self, *args):
+        """If the current URL has a leading ~user/ component, go to its root."""
+        try:
+            self._go_to_gi(self.gi.user())
+        except ValueError:
+            print("The current URL does not appear to start with a tilde dir.")
+
     def do_back(self, *args):
         """Go back to the previous gemini item."""
         if not self.history or self.hist_index == 0: