configitems: register the 'largefiles.patterns' config

hgext/largefiles/__init__.py

@@ -133,6 +133,9 b' configitem = registrar.configitem(config'
 configitem('largefiles', 'minsize',
     default=configitems.dynamicdefault,
 )
+configitem('largefiles', 'patterns',
+    default=list,
+)
 reposetup = reposetup.reposetup
 
 def featuresetup(ui, supported):

hgext/largefiles/lfcommands.py

@@ -109,7 +109,7 b' def lfconvert(ui, src, dest, *pats, **op'
             lfiles = set()
             normalfiles = set()
             if not pats:
-                pats = ui.configlist(lfutil.longname, 'patterns', default=[])
+                pats = ui.configlist(lfutil.longname, 'patterns')
             if pats:
                 matcher = matchmod.match(rsrc.root, '', list(pats))
             else:

hgext/largefiles/overrides.py

@@ -111,7 +111,7 b' def addlargefiles(ui, repo, isaddremove,'
 
     lfmatcher = None
     if lfutil.islfilesrepo(repo):
-        lfpats = ui.configlist(lfutil.longname, 'patterns', default=[])
+        lfpats = ui.configlist(lfutil.longname, 'patterns')
         if lfpats:
             lfmatcher = matchmod.match(repo.root, '', list(lfpats))