Fixed Flamenco exclusion filter bug

There was a mistake in an older version of the property tooltip, showing
semicolon-separated instead of space-separated. We now just handle both.

blender_cloud/blender.py

@@ -219,8 +219,8 @@ class BlenderCloudPreferences(AddonPreferences):
     flamenco_manager = PointerProperty(type=flamenco.FlamencoManagerGroup)
     flamenco_exclude_filter = StringProperty(
         name='File Exclude Filter',
-        description='Filter like "*.abc;*.mkv" to prevent certain files to be packed '
-                    'into the output directory',
+        description='Space-separated list of filename filters, like "*.abc *.mkv", to prevent '
+                    'matching files from being packed into the output directory',
         default='',
         update=project_specific.store,
     )

blender_cloud/flamenco/bat_interface.py

@@ -2,9 +2,10 @@
 
 import asyncio
 import logging
+import pathlib
+import re
 import threading
 import typing
-import pathlib
 
 import bpy
 from blender_asset_tracer import pack
@@ -114,7 +115,11 @@ async def copy(context,
             as packer:
         with _packer_lock:
             if exclusion_filter:
-                packer.exclude(*exclusion_filter.split())
+                # There was a mistake in an older version of the property tooltip,
+                # showing semicolon-separated instead of space-separated. We now
+                # just handle both.
+                filter_parts = re.split('[ ;]+', exclusion_filter.strip(' ;'))
+                packer.exclude(*filter_parts)
 
             packer.progress_cb = BatProgress()
             _running_packer = packer