[folding] clicking on on line number of folded line should select full folding range

[cnshenj]

Issue Type: Bug

1. Fold an area (e.g. a block in JSON) to a line
2. Click the margin of the folded line
3. Try to drag the mouse to select the whole folded area

Expected:
Can select (only) the whole folded area

Actual:
It's either the first line of folded area, or the whole folded area and next line.

Other editors do not have this problem, but the solutions are different:

• Visual Studio: The whole folded area is selected when you click the margin
• Sublime Text: When you drag down, it expands the selection from first line to the whole folded area. If you keep dragging, it will expand the selection to include next line.

Workaround:
Click the beginning of the folded line, drag to the beginning of the next line. It works, but requires much more mouse precision than clicking/dragging in margin area.

Suggestion:
A simple question: how often do you want to select only the first line when you click the margin of folded area? I believe it's very rare, so Visual Studio's solution is desired.

VS Code version: Code 1.27.2 (f46c4c4, 2018-09-12T16:17:45.060Z)
OS version: Windows_NT x64 10.0.17134

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8705G CPU @ 3.10GHz (8 x 3096)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled video_decode: enabled video_encode: enabled webgl: enabled webgl2: unavailable_off
Memory (System)	15.85GB (4.97GB free)
Process Argv	C:\Program Files\Microsoft VS Code\Code.exe D:\Repos\modern\NovaApi
Screen Reader	no
VM	0%

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• fold code (#59014)
• Copying Folded Code (#58209)

[aeschli]

To select a folded range is not really difficult. Place cursor at the beginning of the line with the folding marker, press Shift+down.

But I can look into selecting the full range when clinking on the the line number.

[aeschli]

https://github.com/Microsoft/vscode/blob/d848101d9dcdfefa839e3fe194686b78132ced58/src/vs/editor/common/controller/cursorMoveCommands.ts#L194

[dubeg]

Just to add some info, SublimeText makes the "folded character indicator" selectable, so that we can easily select it to select the folded region. It is also useful when selecting a region with the mouse.

[jasonslyvia]

another useful case is to delete a whole block of dead code, really looking forwarding to have this feature implemented, cheers.

[haideralsh]

Adding my vote to this one too! I often find myself folding code to delete it since it's very intuitive then be disappointed when only one line gets deleted:

[ldsouza93]

I'd really like to have this feature too, much easier to work with ctrl+shift+k (delete line).