Faster dotSource implementation for parsing autoload tab-complete

[Jackbennett]

This[1] blog post describes a faster method of importing use script into
the powershell session by loading the file contents into memory prior to
letting powershell parse them for auto-complete values.

Reference:

1: https://becomelotr.wordpress.com/2017/02/13/expensive-dot-sourcing/

Testing:

Test #1

dotsource(ms)	scriptblock(ms)	filename(test data)
18	13	Approve-Script.ps1
6	2	Clear-PrinterQueue.ps1
14	3	ConvertTo-ImageFormat.ps1
9	2	Copy-MultipleItems.ps1
6	2	Enter-RemoteSession.ps1
6	3	Get-CurrentUser.ps1
7	3	Get-LogonHistory.ps1
6	2	Get-SSID.ps1
6	2	Invoke-DscPullAndApply.ps1
8	3	Move-Drive.ps1
7	2	New-ComputerList.ps1
6	2	New-Directory.ps1
6	3	Set-Proxy.ps1
7	2	Shortcut.ps1
6	3	Start-Delprof.ps1
6	3	Suspend-Computer.ps1
9	4	SystemInformation.ps1
6	3	Test-ModuleSpeed.ps1
7	5	Test-TCPConnection.ps1
6	2	Update-ModuleReadMe.ps1
11	3	Watch-Here.ps1

Test #2

dotsource(ms)	scriptblock(ms)	filename(test data)
40	24	Approve-Script.ps1
8	4	Clear-PrinterQueue.ps1
24	12	ConvertTo-ImageFormat.ps1
14	8	Copy-MultipleItems.ps1
7	4	Enter-RemoteSession.ps1
10	4	Get-CurrentUser.ps1
30	6	Get-LogonHistory.ps1
6	4	Get-SSID.ps1
7	4	Invoke-DscPullAndApply.ps1
11	8	Move-Drive.ps1
11	5	New-ComputerList.ps1
11	4	New-Directory.ps1
6	5	Set-Proxy.ps1
11	5	Shortcut.ps1
10	12	Start-Delprof.ps1
12	5	Suspend-Computer.ps1
69	5	SystemInformation.ps1
11	4	Test-ModuleSpeed.ps1
6	7	Test-TCPConnection.ps1
8	4	Update-ModuleReadMe.ps1
10	9	Watch-Here.ps1

[Jaykul]

Just remember; it's faster because it's bypassing execution policy.

[Jackbennett]

That could possibly be a win, at the moment the whole console session is run with -ExecutionPolicy Bypass to get around the issue of loading our profile. Maybe we should use this trick for the profile as well and then cmder can leave the execution policy alone.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in a week if no further activity occurs. Thank you for your contribution.

[stale]

This issue has been automatically closed due to it not having any activity since it was marked as stale. Thank you for your contribution.