Fix minimum and maximum width and height configurations in navigator plugin to ensure proper display in vim. Update the configurations to handle integers properly and adjust dimensions if popup is centered and visible.

Author: skywind3000

autoload/navigator/config.vim

@@ -336,13 +336,17 @@ function! navigator#config#init(opts) abort
 	let opts.max_width = navigator#config#get(opts, 'max_width')
 	let opts.min_height = navigator#config#get(opts, 'min_height')
 	let opts.max_height = navigator#config#get(opts, 'max_height')
+	let opts.min_width = navigator#config#atoi(opts.min_width, &columns)
+	let opts.max_width = navigator#config#atoi(opts.max_width, &columns)
+	let opts.min_height = navigator#config#atoi(opts.min_height, &lines)
+	let opts.max_height = navigator#config#atoi(opts.max_height, &lines)
 	if opts.min_width > opts.max_width
 		let opts.min_width = opts.max_width
 	endif
 	if opts.min_height > opts.max_height
 		let opts.min_height = opts.max_height
 	endif
-	if opts.popup_position == 'center' && opts.popup
+	if opts.popup_position == 'center' && opts.popup != 0
 		let opts.min_width = opts.popup_width
 		let opts.max_width = opts.popup_width
 		let opts.min_height = opts.popup_height