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Allow fold when function declaration is in multiple lines Dart #4269

@airherna

Description

@airherna

Type: Bug

I'm filing this issue in the Dart extension because I have not been able to reproduce this exact behavior in languages like Python or C, even with the same parameter formatting. It's relevant because this type of formatting is provided by dartfmt and makes the fold feature useless.

Environment:
OS: Windows
Version: 1.73.1
Reproducibility rate: 100%

Steps to reproduce:

  1. Create a Dart function such as:
    Future function(String param1,
    String param2, String param3) async {
    // content
    // content
    // content
    }
  2. Try to fold the function

Expected Result:
The function folds and all the content and parameters are hidden.

Actual Result:
Only the function parameters are folded and the content stays visible.

Extension version: 3.52.1
VS Code version: Code 1.73.1 (6261075646f055b99068d3688932416f2346dd3b, 2022-11-09T04:27:29.066Z)
OS version: Windows_NT x64 10.0.22000
Modes:
Sandboxed: No

System Info
Item Value
CPUs 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz (16 x 2496)
GPU Status 2d_canvas: enabled
canvas_oop_rasterization: disabled_off
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_renderer: enabled_on
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: disabled_off
Load (avg) undefined
Memory (System) 31.67GB (16.43GB free)
Process Argv --crash-reporter-id 923bf38f-184f-4b44-8523-aba43b319e5f
Screen Reader no
VM 0%
A/B Experiments
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    in editorRelates to code editing or language featuresin lsp/analysis serverSomething to be fixed in the Dart analysis serveris enhancementrelies on sdk changesSomething that requires changes in the Dart/Flutter SDK to ship before it will become available

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