Fixed inability to reset search pipeline

Author: squidfunk

Diff for: material/plugins/search/config.py

@@ -46,7 +46,7 @@ class SearchConfig(Config):
     # Settings for search
     lang = Optional(LangOption())
     separator = Optional(Type(str))
-    pipeline = ListOfItems(Choice(pipeline), default = [])
+    pipeline = Optional(ListOfItems(Choice(pipeline)))
 
     # Settings for text segmentation (Chinese)
     jieba_dict = Optional(Type(str))

Diff for: material/plugins/search/plugin.py

@@ -75,7 +75,7 @@ def on_config(self, config):
             )
 
         # Retrieve default value for pipeline
-        if not self.config.pipeline:
+        if self.config.pipeline is None:
             self.config.pipeline = list(filter(len, re.split(
                 r"\s*,\s*", self._translate(config, "search.config.pipeline")
             )))

Diff for: src/plugins/search/config.py

@@ -46,7 +46,7 @@ class SearchConfig(Config):
     # Settings for search
     lang = Optional(LangOption())
     separator = Optional(Type(str))
-    pipeline = ListOfItems(Choice(pipeline), default = [])
+    pipeline = Optional(ListOfItems(Choice(pipeline)))
 
     # Settings for text segmentation (Chinese)
     jieba_dict = Optional(Type(str))

Diff for: src/plugins/search/plugin.py

@@ -75,7 +75,7 @@ def on_config(self, config):
             )
 
         # Retrieve default value for pipeline
-        if not self.config.pipeline:
+        if self.config.pipeline is None:
             self.config.pipeline = list(filter(len, re.split(
                 r"\s*,\s*", self._translate(config, "search.config.pipeline")
             )))