From 322ed6c73f525ec70f457d413f03aad9dd2863e9 Mon Sep 17 00:00:00 2001
From: poikilos <7557867+poikilos@users.noreply.github.com>
Date: Mon, 1 Feb 2021 00:40:37 -0500
Subject: [PATCH] Create a custom converter for the geometry param. Improve
 help for backend.

---
 minetestmapper-numpy.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/minetestmapper-numpy.py b/minetestmapper-numpy.py
index 20a1547..3d08b35 100755
--- a/minetestmapper-numpy.py
+++ b/minetestmapper-numpy.py
@@ -321,8 +321,8 @@ def parse_args():
                     help=('direction to face when drawing (north,'
                           ' south, east or west will draw a'
                           ' cross-section)'))
-    ap.add_argument('--geometry', type=str, default='',
-                   nargs='?', action='store',
+    ap.add_argument('--geometry', type=geometry_to_ints, default=None,
+                    action='store',
                     help=('Specify a region in X:Y+W+H format.'))
     # ^ handle hyphen as negative number not option
     # See:
@@ -340,8 +340,8 @@ def parse_args():
                           'or "default:stone 128 128 128")'))
     ap.add_argument('--backend', type=str,
                     choices=('leveldb', 'sqlite3'), default='leveldb',
-                    help=('accepted for compatibility but'
-                          ' NOT YET IMPLEMENTED in this version'))
+                    help=('manually specify leveldb or sqlite3'
+                          ' (others are NOT YET IMPLEMENTED)'))
     ap.add_argument('--fog', type=float, metavar=('FOGSTRENGTH'),
                     default=0.0, help=('use fog strength of'
                                        ' FOGSTRENGTH (0.0 by'