[patreon] fix hash extraction from download URLs (closes #693)

The old method was assuming every URL path ends with '/1'. For URLs
where this is not the case, the segment containing the post ID was
used as file hash.

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Changelog
 
+## Unreleased
+
 ## 1.13.4 - 2020-04-12
 ### Additions
 - [aryion] add `gallery` and `post` extractors ([#390](https://github.com/mikf/gallery-dl/issues/390), [#673](https://github.com/mikf/gallery-dl/issues/673))

gallery_dl/extractor/patreon.py

@@ -47,7 +47,7 @@ class PatreonExtractor(Extractor):
                 self._attachments(post),
                 self._content(post),
             ):
-                fhash = url.rsplit("/", 2)[1]
+                fhash = url.split("/")[9].partition("?")[0]
                 if fhash not in hashes:
                     hashes.add(fhash)
                     post["hash"] = fhash

gallery_dl/version.py

@@ -6,4 +6,4 @@
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
 
-__version__ = "1.13.4"
+__version__ = "1.13.5-dev"