Terminal mangles names of file dropped into the terminal if they contain quotes

[lgarron]

Type: Bug

1. Create a file named Bram's Hinged Cube v0.2.3.scad
2. Drag and drop the file into the VS Code terminal.

Expected: the file name that is added to the current command prompt is a valid quoted or escaped version of the dropped file.

Observed: the file name is quoted but quotes (any single or double quotes) are stripped. In my case, I get:

'/Users/lgarron/Downloads/Brams Hinged Cube v0.2.3.scad'

In the best case, this results in an immediate error from whatever command the user runs with the mangled file name.

In the worst case, this can refer to a different file and can have mild to catastrophic consequences depending on the assumptions of the user and/or the program they are running.

I've tested this with all extensions disabled on macOS, and it still occurs.

VS Code version: Code 1.100.2 (848b80a, 2025-05-14T21:47:40.416Z)
OS version: Darwin arm64 24.5.0
Modes:

System Info

Item	Value
CPUs	Apple M1 Max (10 x 2400)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on 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 video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	13, 12, 11
Memory (System)	64.00GB (11.15GB free)
Process Argv	--disable-extensions --crash-reporter-id 88d577d0-2e7d-4290-872a-7cef906b73f7
Screen Reader	no
VM	0%

Extensions disabled

A/B Experiments

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[lgarron]

I've recently also been experiencing issues where template values like file, relativeFile, and fileBasename are also incorrectly quoted when added to the terminal using workbench.action.terminal.sendSequence.

In that case the quotes are unescaped rather than omitted, which is not really any better form a correctness or safety perspective. (If anything, an odd number of unescaped quotes can break the interpretation of all following code, causing a large variety of potential shell syntax issues rather than just an incorrect file name.)

However, this makes me suspect that there is a common cause, and possibly a recent regression.

[lgarron]

This makes me suspect that there is a common cause, and possibly a recent regression.

Unfortunately, I tried https://github.com/microsoft/vscode-bisect and reproduced the issue with dropping files back to 1.95. The bisect tool fails to work on any older builds.