[kemono] improve 'filename'

gallery_dl/extractor/kemono.py

@@ -150,13 +150,19 @@ class KemonoExtractor(Extractor):
                     url = self.root + "/data" + url[20:]
                 file["url"] = url
 
-                text.nameext_from_url(file.get("name", url), file)
-                ext = text.ext_from_url(url)
-                if not file["extension"]:
-                    file["extension"] = ext
-                elif ext == "txt" and file["extension"] != "txt":
-                    file["_http_validate"] = _validate
-                elif ext in exts_archive or \
+                if name := file.get("name"):
+                    text.nameext_from_name(name, file)
+                    ext = text.ext_from_url(url)
+
+                    if not file["extension"]:
+                        file["extension"] = ext
+                    elif ext == "txt" and file["extension"] != "txt":
+                        file["_http_validate"] = _validate
+                else:
+                    text.nameext_from_url(url, file)
+                    ext = file["extension"]
+
+                if ext in exts_archive or \
                         ext == "bin" and file["extension"] in exts_archive:
                     file["type"] = "archive"
                     if archives:

test/results/kemono.py

@@ -137,7 +137,7 @@ __tests__ = (
         "https://kemono.cr/data/b0/38/b03882c8b0ab3b1cf9fc658a2bb2f9ac6ad4f3449015311dcd2d7ee7f748db31.png",
     ),
 
-    "tags": r"re:\bpin-up\b",
+    "tags": list,
 },
 
 {
@@ -241,7 +241,7 @@ __tests__ = (
     "#class"   : kemono.KemonoPostExtractor,
     "#options" : {"dms": True, "comments": True},
 
-    "comments": (),
+    "comments": [],
     "dms": [
         {
             "added"    : "2021-07-31T02:47:51.327865",
@@ -378,6 +378,7 @@ __tests__ = (
     "revision_hash": {
         "9872bfb536a47cc69d95d2f195cd5c825808f089",
         "e0e93281495e151b11636c156e52bfe9234c2a40",
+        "eb2fa4385af730509a42f8f0424bd0b9a0e4bc21",
     },
 },