Sort symbol before send to Emacs.

core/handler/completion_workspace_symbol.py

@@ -1,5 +1,6 @@
 from core.handler import Handler
 from core.utils import *
+from functools import cmp_to_key
 
 
 class CompletionWorkspaceSymbol(Handler):
@@ -8,11 +9,24 @@ class CompletionWorkspaceSymbol(Handler):
     provider = "workspace_symbol_provider"
 
     def process_request(self, lsp_server, query) -> dict:
+        self.prefix = query
         self.lsp_server = lsp_server
         self.lsp_server_name = self.lsp_server.server_info["name"]
         query = ''.join(query.split())
         return dict(query=query)
 
+    def compare_candidates(self, x, y):
+        prefix = self.prefix.lower()
+        x_label, y_label = x["label"].lower(), y["label"].lower()
+        x_include_prefix, y_include_prefix = x_label.startswith(prefix), y_label.startswith(prefix)
+
+        # Sort by prefix.
+        if x_include_prefix != y_include_prefix:
+            return -1 if x_include_prefix else 1
+
+        # Sort by length.
+        return -1 if len(x_label) < len(y_label) else (1 if len(x_label) > len(y_label) else 0)
+
     def process_response(self, response: dict) -> None:
         if response is not None:
             completion_symbols = []
@@ -32,6 +46,8 @@ def process_response(self, response: dict) -> None:
 
                 completion_symbols.append(symbol)
 
+            completion_symbols = sorted(completion_symbols, key=cmp_to_key(self.compare_candidates))
+
             if len(completion_symbols) > 0:
                 eval_in_emacs("lsp-bridge-completion-workspace-symbol--record-items",
                               self.file_action.filepath,