Adding indentation in SASS file

[mittalyashu]

Issue Type: Bug

Not able to indent after collapsing the content in SASS file.
https://youtu.be/Vb2QvgUAIzA

VS Code version: Code 1.25.1 (1dfc5e5, 2018-07-11T15:43:11.471Z)
OS version: Windows_NT ia32 10.0.17134

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz (4 x 2295)
GPU Status	2d_canvas: enabled 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: disabled_software video_decode: enabled video_encode: enabled vpx_decode: unavailable_software webgl: enabled webgl2: enabled
Memory (System)	3.78GB (0.65GB free)
Process Argv	C:\Program Files (x86)\Microsoft VS Code\Code.exe
Screen Reader	no
VM	0%

Extensions (23)

Extension	Author (truncated)	Version
vscode-languagetool	ada	3.8.0
vscode-languagetool-en	ada	3.8.0
Bookmarks	ale	9.0.2
vscode-open-file-folder	auc	0.0.4
emojisense	bie	0.4.1
rails	bun	0.8.0
vscode-gemfile	bun	0.0.2
gitlens	eam	8.5.3
EditorConfig	Edi	0.12.4
carbon-now-sh	eri	1.1.1
prettier-vscode	esb	1.5.0
code-runner	for	0.9.3
HTMLHint	mka	0.5.0
vscode-duplicate	mrm	1.2.1
atom-keybindings	ms-	3.0.4
vetur	oct	0.12.5
material-icon-theme	PKi	3.5.2
Ruby	reb	0.18.0
vscode-icons	rob	7.24.0
sass-indented	rob	1.4.9
guides	spy	0.9.2
code-spell-checker	str	1.6.10
vscode-import-cost	wix	2.8.0

(8 theme extensions excluded)

[vscodebot]

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

• sass autocomplete do not work in vue file (#53614)

[aeschli]

The folding strategy for SASS is based purely on the indentation of lines. A folding region starts when a line has a smaller indent than one or more following lines and ends when there is a line with the same or smaller indent.

To be smarter and to, for example, have folding regions for SASS rule, this would have to be done by a SASS extension that understands the SASS syntax.
Please file this request against your favorite SASS extension (We don't intend to work on SASS support ourselves)