Duplicated quotes when auto-completing string literals, with autoClosingQuotes disabled

[yueyinqiu]

Type: Bug

Behaviour

With "editor.autoClosingQuotes": "never", write:

from typing import Literal
x: Literal["x"] = "

It will show an auto-complete suggestion "x" (as expected):

However, when choosing it, the final code includes a duplicated ":

(This won't happen when autoClosingQuotes is enabled.)

Diagnostic data

(There seems no related logs?)

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Environment

(The following environment is generated by the issue reporter on a remote device. I have also tested on my local machine (Windows), and it also happens. I believe this issue is unrelated to the environment.)

Extension version: 2026.4.0
VS Code version: Code 1.116.0 (560a9dba96f961efea7b1612916f89e5d5d4d679, 2026-04-15T00:28:13Z)
OS version: Windows_NT x64 10.0.19045
Modes:
Remote OS version: Linux x64 5.15.0-164-generic

• Python version (& distribution if applicable, e.g. Anaconda):
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Unknown
• Value of the python.languageServer setting: Default

User Settings

languageServer: "Pylance"

terminal
• activateEnvironment: false

Installed Extensions

Extension Name	Extension Id	Version
csdevkit	ms-	3.10.14
csharp	ms-	2.130.5
debugpy	ms-	2025.18.0
even-better-toml	tam	0.21.2
flake8	ms-	2025.2.0
hexeditor	not	1.8.2
js-debug	ms-	1.112.0
js-debug-companion	ms-	1.1.3
jsts-chat-features	Typ	0.0.2
markdown-all-in-one	yzh	3.6.3
markdown-mermaid	bie	1.32.0
pdf	tom	1.2.2
python	ms-	2026.4.0
rainbow-csv	mec	3.24.1
remote-explorer	ms-	0.5.0
remote-ssh	ms-	0.122.0
remote-ssh-edit	ms-	0.87.0
sqlite-viewer	qwt	25.12.2
vscode-dotnet-runtime	ms-	3.0.0
vscode-github-actions	git	0.31.3
vscode-js-profile-table	ms-	1.0.10
vscode-language-pack-zh-hans	MS-	1.110.2026041514
vscode-pydata-viewer	Per	0.0.15
vscode-pylance	ms-	2026.2.1
vscode-python-envs	ms-	1.28.0
zip-viewerx	Mak	1.0.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz (8 x 2112)
GPU Status	2d_canvas: enabled GPU0: VENDOR= 0x8086, DEVICE=0x5917 [Intel(R) UHD Graphics 620], DRIVER_VENDOR=Intel, DRIVER_VERSION=31.0.101.2134 ACTIVE GPU1: VENDOR= 0x8086, DEVICE=0x5917 [Intel(R) UHD Graphics 620], DRIVER_VERSION=31.0.101.2134 GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.19041.5794 Machine model name: Machine model version: direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	7.88GB (0.84GB free)
Process Argv	--crash-reporter-id f48474c2-14f7-477c-8807-2e8ae5bb3bdd
Screen Reader	no
VM	0%

Item	Value
Remote	SSH: illusion
OS	Linux x64 5.15.0-164-generic
CPUs	Intel(R) Xeon(R) Gold 6348 CPU @ 2.60GHz (56 x 3400)
Memory (System)	1007.53GB (860.73GB free)
VM	0%

A/B Experiments

vsliv368cf:30146710
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
6abeh943:31336334
envsactivate1:31464700
cloudbuttont:31379625
42190218_ostrepl:31403339
use-responses-api:31390855
ddidtcf:31399634
je187915:31454425
ec5jj548:31422691
cp_cls_c_966_ss:31454199
inlinechat_v2_hd992725:31485760
4je02754:31466945
8hhj4413:31478653
38bie571_auto:31426784
cp_cls_c_1081:31454833
conptydll_false:31489735
e9c30283:31461165
test_treatment2:31471001
idci7584:31464702
e3e4d672:31494082
ei9d7968:31496641
534a6447:31496642
chat:31457767
dfc2j404:31496396
cpptoolson-v2:31475363
ghj88844:31492074
h08i8180_copy:31475368
ec1eg703:31491645
client_tst_t:31495907
ddid_t:31478206
getcmakediagnosticson:31489824
cp_cls_c_1082:31491634
f5b8g904_t:31489328
logging_disabled_new:31493366
748c7209:31497895

[github-actions]

Hi @yueyinqiu, I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.

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Similar Issues (FYI only, not solutions)

The following issues may or may not be related to your report. They are provided for reference only, as they may describe similar symptoms or relate to the same feature, but may not be the same issue.

• Autocompletion suggests duplicate literal in set argument – Pylance’s autocompletion for Literal values in a set still suggests values already used. Autocompletion suggests duplicate literal in set argument #6232
• Python duplicate auto complete / suggestions – duplicate entries appearing in the autocomplete list. Python duplicate auto complete / suggestions #3072
• Literal autocompletion not triggered inside quotes – literal-type completions only offered outside quotes, not inside them. Literal autocompletion not triggered inside quotes #952

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The team will respond to your issue shortly. Please note this is a trial feature and may not be fully accurate. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or was incorrect, please give it a 👎. Your feedback helps us improve!