Editor: Fix completions next to path separators

Author: ccordoba12

spyder/plugins/editor/widgets/base.py

@@ -971,19 +971,22 @@ def insert_completion(self, completion, completion_position):
 
                 # Adjustments for file completions
                 if kind == CompletionItemKind.FILE:
-                    if current_text in ['"', "'"]:
-                        # This is necessary to insert file completions when
-                        # requesting them next to a colon
-                        current_text = ''
-                        start_position += 1
-                    elif current_text in ['".', "'."]:
+                    special_chars = ['"', "'", '/']
+
+                    if any(
+                        [current_text.endswith(c) for c in special_chars]
+                    ):
+                        # This is necessary when completions are requested next
+                        # to special characters.
+                        start_position = end_position
+                    elif current_text.endswith('.') and len(current_text) > 1:
                         # This inserts completions for files or directories
                         # that start with a dot
-                        current_text = '.'
-                        start_position += 1
+                        start_position = end_position - 1
                     elif current_text == '.':
                         # This is needed if users are asking for file
-                        # completions to the right of a dot
+                        # completions to the right of a dot when some of its
+                        # name is part of the completed text
                         cursor_1 = self.textCursor()
                         found_start = False
 
@@ -1012,10 +1015,7 @@ def insert_completion(self, completion, completion_position):
                     cursor.setPosition(start_position)
 
                     # Remove the word under the cursor
-                    if current_text:
-                        cursor.setPosition(
-                            end_position, QTextCursor.KeepAnchor
-                        )
+                    cursor.setPosition(end_position, QTextCursor.KeepAnchor)
                 else:
                     # Check if we are in the correct position
                     if cursor.position() != completion_position:

spyder/plugins/editor/widgets/tests/test_introspection.py

@@ -1225,7 +1225,7 @@ def test_dot_completions(completions_codeeditor, qtbot):
 @pytest.mark.order(1)
 @pytest.mark.parametrize(
     "filename", ['000_test.txt', '.hidden', 'any_file.txt', 'abc.py',
-                 'part.0.parquet'])
+                 'part.0.parquet', '/home', '/usr/bin'])
 def test_file_completions(filename, mock_completions_codeeditor, qtbot):
     """
     Test that completions for files are handled as expected.
@@ -1249,21 +1249,35 @@ def test_file_completions(filename, mock_completions_codeeditor, qtbot):
         # This checks that we can insert file completions next to a dot when a
         # filename has several dots.
         qtbot.keyClicks(code_editor, "'part.0.'")
+    elif filename == '/home':
+        # This checks that we can insert file completions next to a /
+        qtbot.keyClicks(code_editor, "'/'")
+    elif filename == '/usr/bin':
+        # This checks that we can insert file completions next to a / placed at
+        # second-level
+        qtbot.keyClicks(code_editor, "'/usr/'")
     else:
         qtbot.keyClicks(code_editor, f"'{filename[0]}'")
     code_editor.moveCursor(QTextCursor.PreviousCharacter)
     qtbot.wait(500)
 
-    # Complete '0' -> '000_testing.txt'
+    # Set text that will be completed
+    if filename == '/home':
+        completion_text = 'home'
+    elif filename == '/usr/bin':
+        completion_text = 'bin'
+    else:
+        completion_text = filename
+
     mock_response.side_effect = lambda lang, method, params: {'params': [{
-        'label': f'{filename}',
+        'label': f'{completion_text}',
         'kind': CompletionItemKind.FILE,
-        'sortText': (0, f'a{filename}'),
-        'insertText': f'{filename}',
+        'sortText': (0, f'a{completion_text}'),
+        'insertText': f'{completion_text}',
         'data': {'doc_uri': path_as_uri(__file__)},
         'detail': '',
         'documentation': '',
-        'filterText': f'{filename}',
+        'filterText': f'{completion_text}',
         'insertTextFormat': 1,
         'provider': 'LSP',
         'resolve': True