Control backspace/delete in powershell and cmd terminal should delete word

[damongr-msft]

Issue Type: Bug

Repro:

1. Open terminal (powershell or cmd)
2. type "dir foo"
3. Press control-backspace
   Result: dir foo^W
   Expected: dir

Generally the same thing happens with control-delete when cursor is on the "f" in foo, it should delete the foo word, in the terminal it doesn't do anything.

VS Code version: Code 1.30.2 (61122f8, 2019-01-07T22:54:13.295Z)
OS version: Windows_NT x64 10.0.17763

System Info

Item	Value
CPUs	Intel(R) Xeon(R) CPU E5-1650 v4 @ 3.60GHz (12 x 3592)
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: enabled
Memory (System)	31.92GB (12.40GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (10)

Extension	Author (truncated)	Version
tslint	eg2	1.0.42
gc-excelviewer	Gra	2.1.28
vscode-antlr4	mik	2.1.1
prettify-json	moh	0.0.3
mssql	ms-	1.4.0
cpptools	ms-	0.21.0
csharp	ms-	1.17.1
PowerShell	ms-	1.11.0
java	red	0.38.0
vim	vsc	1.0.7

[vscodebot]

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

• Opening VSCode from terminal prevents closing the terminal (#67058)

[Tyriar]

I actually spoke with @TylerLeonhardt from the PowerShell team yesterday about exactly this and now know why it doesn't work. PSReadLine does not have a keybinding when set toe "Windows" edit mode for ^W which is what our terminal emits. To get this to work by manually assigning the right keybinding to ctrl+w or run this:

Set-PSReadLineOption -EditMode Emacs