normalize wallet file paths

fix #4020
fix #4126

electrum/gui/qt/main_window.py

@@ -452,6 +452,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         if filename in recent:
             recent.remove(filename)
         recent.insert(0, filename)
+        recent = [path for path in recent if os.path.exists(path)]
         recent = recent[:5]
         self.config.set_key('recently_open', recent)
         self.recently_visited_menu.clear()

electrum/storage.py

@@ -29,7 +29,7 @@ import json
 import copy
 import re
 import stat
-import hmac, hashlib
+import hashlib
 import base64
 import zlib
 from collections import defaultdict
@@ -73,7 +73,7 @@ class JsonDB(PrintError):
     def __init__(self, path):
         self.db_lock = threading.RLock()
         self.data = {}
-        self.path = path
+        self.path = os.path.normcase(os.path.abspath(path))
         self.modified = False
 
     def get(self, key, default=None):
@@ -142,8 +142,8 @@ class JsonDB(PrintError):
 class WalletStorage(JsonDB):
 
     def __init__(self, path, manual_upgrades=False):
-        self.print_error("wallet path", path)
         JsonDB.__init__(self, path)
+        self.print_error("wallet path", path)
         self.manual_upgrades = manual_upgrades
         self.pubkey = None
         if self.file_exists():