implement a 'path-replace' option (#662, #755)

docs/configuration.rst

@@ -135,9 +135,10 @@ Type        ``string`` or ``object``
 Default     ``"auto"``
 Example     | ``"/!? (){}"``
             | ``{" ": "_", "/": "-", "|": "-", ":": "-", "*": "+"}``
-Description | String of characters to be replaced with underscores (``_``)
-            | or an object mapping specific characters to others
-            | in generated path segment names.
+Description | A string of characters to be replaced with the value of
+              `path-replace <extractor.*.path-replace>`__
+            | or an object mapping invalid/unwanted characters to their replacements
+            | for generated path segment names.
 
             Special values:
 
@@ -151,6 +152,16 @@ Description | String of characters to be replaced with underscores (``_``)
 =========== =====
 
 
+extractor.*.path-replace
+------------------------
+=========== =====
+Type        ``string``
+Default     ``"_"``
+Description The replacement character(s) for
+            `path-restrict <extractor.*.path-restrict>`__
+=========== =====
+
+
 extractor.*.path-remove
 -----------------------
 =========== =====

docs/gallery-dl.conf

@@ -10,6 +10,7 @@
         "skip": true,
         "sleep": 0,
         "path-restrict": "auto",
+        "path-replace": "_",
         "path-remove": "\\u0000-\\u001f\\u007f",
         "user-agent": "Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0",
 

gallery_dl/util.py

@@ -725,16 +725,17 @@ class PathFormat():
         self.basedirectory = basedir
 
         restrict = extractor.config("path-restrict", "auto")
+        replace = extractor.config("path-replace", "_")
+
         if restrict == "auto":
             restrict = "\\\\|/<>:\"?*" if WINDOWS else "/"
         elif restrict == "unix":
             restrict = "/"
         elif restrict == "windows":
             restrict = "\\\\|/<>:\"?*"
+        self.clean_segment = self._build_cleanfunc(restrict, replace)
 
         remove = extractor.config("path-remove", "\x00-\x1f\x7f")
-
-        self.clean_segment = self._build_cleanfunc(restrict, "_")
         self.clean_path = self._build_cleanfunc(remove, "")
 
     @staticmethod