CLI: Fix project index-file command not using only the relevant language server to index the given file

Resolves #1965

CHANGELOG.md

@@ -42,6 +42,9 @@ Status of the `main` branch. Changes prior to the next official version change w
     independently via the `window/logMessage` notification tsserver already sends, and the
     affected wait now raises instead of reporting success (#1814)
 
+CLI:
+  - Fix `project index-file` command not using only the relevant language server to index the given file (#1965)
+
 * Dependencies:
   - Remove the redundant `dotenv` dependency; the `dotenv` module is provided by `python-dotenv`
 

src/serena/cli.py

@@ -893,16 +893,16 @@ class ProjectCommands(AutoRegisteringGroup):
             exit(1)
         ls_mgr = proj.create_language_server_manager()
         try:
-            for ls in ls_mgr.iter_language_servers():
-                click.echo(f"Indexing for language {ls.ls_id.value} …")
-                document_symbols = ls.request_document_symbols(file)
-                symbols, _ = document_symbols.get_all_symbols_and_roots()
-                if verbose:
-                    click.echo(f"Symbols in file '{file}':")
-                    for symbol in symbols:
-                        click.echo(f"  - {symbol['name']} at line {symbol['selectionRange']['start']['line']} of kind {symbol['kind']}")
-                ls.save_cache()
-                click.echo(f"Successfully indexed file '{file}', {len(symbols)} symbols saved to cache in {ls.cache_dir}.")
+            ls = ls_mgr.get_language_server(file)
+            click.echo(f"Indexing for language {ls.ls_id.value} …")
+            document_symbols = ls.request_document_symbols(file)
+            symbols, _ = document_symbols.get_all_symbols_and_roots()
+            if verbose:
+                click.echo(f"Symbols in file '{file}':")
+                for symbol in symbols:
+                    click.echo(f"  - {symbol['name']} at line {symbol['selectionRange']['start']['line']} of kind {symbol['kind']}")
+            ls.save_cache()
+            click.echo(f"Successfully indexed file '{file}', {len(symbols)} symbols saved to cache in {ls.cache_dir}.")
         finally:
             ls_mgr.stop_all()