Fix an off-by-one bug where we don't zoom on the last selected line. Issue 6321

sources/PTYSession.m

@@ -8464,6 +8464,7 @@ ITERM_WEAKLY_REFERENCEABLE
 - (NSString *)currentLocalWorkingDirectory {
     if (_lastDirectoryIsUnsuitableForOldPWD || _lastDirectory == nil) {
+        DLog(@"Last directory is unsuitable or nil");
         // Ask the kernel what the child's process's working directory is.
         return [_shell getWorkingDirectory];
     } else {
@@ -8473,6 +8474,7 @@ ITERM_WEAKLY_REFERENCEABLE
         // to expand symlinks on _lastDirectory and use it if it matches what the kernel reports.
         // That was a bad idea because expanding symlinks is slow on network file systems (Issue 4901).
         // Instead, we'll use _lastDirectory if we believe it's on localhost.
+        DLog(@"Using last directory from shell integration: %@", _lastDirectory);
         return _lastDirectory;
     }
 }

sources/PseudoTerminal.m

@@ -5063,7 +5063,7 @@ ITERM_WEAKLY_REFERENCEABLE
     iTermSubSelection *sub = [selection.allSubSelections lastObject];
     if (sub) {
         [self showRangeOfLines:NSMakeRange(sub.range.coordRange.start.y,
-                                           sub.range.coordRange.end.y - sub.range.coordRange.start.y)
+                                           sub.range.coordRange.end.y - sub.range.coordRange.start.y + 1)
                      inSession:session];
     }
 }
@@ -7594,6 +7594,7 @@ ITERM_WEAKLY_REFERENCEABLE
         currentSession = currentSession.tmuxGatewaySession;
     }
     if (currentSession) {
+        DLog(@"Getting current local working directory");
         previousDirectory = [currentSession currentLocalWorkingDirectory];
     }