[deviantart] add 'intermediary' option (#4955)

docs/configuration.rst

@@ -1373,6 +1373,17 @@ Description
     It is possible to use ``"all"`` instead of listing all values separately.
 
 
+extractor.deviantart.intermediary
+---------------------------------
+Type
+    ``bool``
+Default
+    ``true``
+Description
+    For older non-downloadable images,
+    download a higher-quality ``/intermediary/`` version.
+
+
 extractor.deviantart.journals
 -----------------------------
 Type

gallery_dl/extractor/deviantart.py

@@ -48,6 +48,7 @@ def _init(self):
         self.quality = self.config("quality", "100")
         self.original = self.config("original", True)
         self.comments = self.config("comments", False)
+        self.intermediary = self.config("intermediary", True)
 
         self.api = DeviantartOAuthAPI(self)
         self.group = False
@@ -136,7 +137,7 @@ def items(self):
                 elif self.jwt:
                     self._update_token(deviation, content)
                 elif content["src"].startswith("https://images-wixmp-"):
-                    if deviation["index"] <= 790677560:
+                    if self.intermediary and deviation["index"] <= 790677560:
                         # https://github.com/r888888888/danbooru/issues/4069
                         intermediary, count = re.subn(
                             r"(/f/[^/]+/[^/]+)/v\d+/.*",