Right click paste should work mostly like Ctrl+v paste

There are various complaints about the right click to paste behavior - all of which are non-issues with Ctrl+v paste.

This includes:

Accepting input before the "paste" is done (Beta.9 - Module PSReadLine impacting ifelse block structure #575)
"paste" with \n comes in reverse (Right-click paste with \n comes out upside down? #496)
carriage return not honored (Carriage return (enter key or line break) from clipboard text (when pasted) is not honored in Powershell #417 CRLF is printing ^M #245)
tab completion happens when it shouldn't (File name inserted into paste input #77)
pasting is slow (Copy-paste of large body of code can't be interrupted #37)

The fix for this should also address #290 by checking if the input is "complete" after a newline, though it should check if the last statement could be continued even if it is complete, e.g. if w/o an else or try without a finally.

So I mentioned capturing mouse events and I came up with this PoC https://github.com/Tadas/PSReadLine/tree/MouseHook

Basically this installs a global Windows event hook to capture right clicks. It looks for ones going to our console window, makes sure that the click was in the client area and if we're in quick edit mode calls PSConsoleReadLine.Paste() directly while suppressing the event.

With some more hackery I think it would be possible to intercept Paste action from the context menu.

Interesting approach.

I'm not interested in taking a dependency on System.Windows.Forms - I used it for clipboard support but removed the dependency to work as a netstandard2 assembly. I haven't switched the build over though because it gets unnecessarily messy with unnecessary assemblies in the build output directory.

I'm also a bit concerned about ensuring UnhookWindowsHookEx is always called, e.g. I have some code that should be running when PowerShell exits but it doesn't seem to happen, see #262.

One other thing - ideally we can fix this on every platform, not just Windows. The heuristic approach should work cross-platform, but I'm open to more reliable approaches like yours if there is a solution for the various non-Windows platforms as well.

FYI

This issue still persist on PowerShell Core 6 RC.
:)

Maximo Trinidad (@MaximoTrinidad)

Maximo Trinidad (@MaximoTrinidad) - PSReadLine has always worked this way and it is a little different than without PSReadLine. It wasn't much of a problem because Ctrl+v is preferred - it is way faster and characters like Tab don't get expanded incorrectly.

Now this problem is more annoying on PowerShell Core because the port that the PowerShell team did not support the clipboard. My port does, so when PSReadLine 2.0 is widely available, I'll continue to recommend folks use Ctrl+v instead of right click.

That said, it would be nice to see this fixed at some point.

Hum! Interesting.

They force me to close my incident about the issue with the If-Else block not working after pasting it into PowerShell Core as it breaks at the "else".

I just tried using Ctrl-V and it do nothing. In the other hand, doing the right-click on the mouse works.

My issue wasn't really the pasting of the code. The If-Else should work with both structure:

PowerShell v6.0.0-rc
Copyright (c) Microsoft Corporation. All rights reserved.

https://aka.ms/pscore6-docs
Type 'help' to get help.

PS C:\Program Files\PowerShell\6.0.0-rc> # the following code block will break:
PS C:\Program Files\PowerShell\6.0.0-rc> $m = "max"; if($m -eq "elaine")
>> {
>>   "Its elaine!!"
>> }
PS C:\Program Files\PowerShell\6.0.0-rc> else
else : The term 'else' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ else
+ ~~~~
+ CategoryInfo          : ObjectNotFound: (else:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\Program Files\PowerShell\6.0.0-rc> {
>>  "Its not elaine"
>> }

 "Its not elaine"

PS C:\Program Files\PowerShell\6.0.0-rc> # the following code block will execute:
PS C:\Program Files\PowerShell\6.0.0-rc> $m = "max"; if ($m -eq "elaine")
>> {
>> "Its elaine!!"
>> }else{
>> "Its not elaine"
>> }
Its not elaine
PS C:\Program Files\PowerShell\6.0.0-rc>

I know if I remove the module then is works as expected.
:)

As I said, Ctrl+v works in Windows PowerShell, but you need PSReadLine 2.0 (no official builds available yet) for PowerShell Core.

And I fully understand the problem, you don't need to keep repeating yourself.

Without PSReadLine, if there is multi-line input, you must enter a single blank line before the input is accepted.

With PSReadLine, if the input is "complete", as in, it parses without an IncompleteParseException, then the input will be accepted without that extra blank line.

So PSReadLine is just different and that's not changing. If you aren't pasting, you use Shift+Enter when you know you're not done - this way you can enter your else without PSReadLine accepting the input.

When you paste, you can't use Shift+Enter, so the input might get accepted before you wanted.

This issue is to attempt to emulate Ctrl+v when you right click paste so that the experience is better, but I do not plan on requiring a blank line to accept multi-line input.

My Apologies!

It's been a tough day! At least, it's manageable, and not show stopper as the script will execute regardless of the way I code the If-Else block.

I appreciate all the information,

:)

I don't understand why you mentioned cross platform'ness - isn't this right-click paste issue strictly a Windows thing?

Anyway, I've removed System.Windows.Forms by implementing the message loop. It needs to be improved further because right now it keeps calling PeekMessage as fast as it can which is unnecessary.

Seems like always calling UnhookWindowsHookEx might be not that important as long as the hooking process exits. At least I've never had any issues during debugging.

Maybe not with a right click, but Linux and Mac terminals definitely support paste. For example, the default graphical terminal in CentOS has Edit|Paste in the main menu and Paste in a right click popup menu.

My concern about UnhookWindowsHookEx is purely based on the documentation - they usually have a good reason to call it out. Maybe try running PowerShell a few thousand times to see if system performance degrades.

As you pointed out, the busy loop is too busy. I use a 300ms wait to check for idle events in the main input loop - 300ms is supposedly long enough to not hurt battery life.

Just to summarize the status quo on (some) Unix-like platforms (macOS 10.13 with either Terminal.app or iTerm2.app, Ubuntu 16 with its default terminal):

The Ctrl+V workaround applies to Windows only (similarly, binding a custom chord to the Paste function doesn't work on Unix).
As with right-clicking on Windows, using the terminal-program specific keyboard shortcut for pasting (Cmd+V on macOS, Ctrl+Shift+Von Ubuntu), seems to paste by simulating interactive typing.
- Yet another problem arising out of this behavior is Pasting multiline code conflicts with parentheses/brackets/brace-matching key handler #735, where a custom key handler that inserts matching parens/brackets/braces interferes with pasting multiline input.

i am pasting a block of code from windows 5.1 powershel ise into powershell 6 via conhost.exe and when i paste with a right click, some of my dashes are missing, whereas if i paste with ctrl+v the dashes are there

I don't see an obvious way to fix this. On Windows, I can see that when pasting via Ctrl+V (which is handled by Windows Terminal and not PSRL), the end of line is \r\n where the \n is Ctrl+Enter. The \r (Enter) is handled by PSRL as AcceptLine and executes. On macOS, the line ending is just \r (without any modifier). So the best workaround is to bind PSReadLine Paste handler to some chord and use that which pastes correctly.

It is interesting that without PSReadLine, the basic ReadLine in pwsh handles this correctly...

Steve Lee (@SteveL-MSFT)

Steve Lee (@SteveL-MSFT): As for macOS: haven't looked in detail, but multi-line pasting with the default keyboard shortcut (Cmd-V) seems to work just fine in PSRL 2.0.0 beta.4, with both CRLF- and platform-native LF-only text.

On macOS, the line ending is just \r

In case you're referring to the platform-native newline sequence on macOS: When macOS became OS X in 2001 and thereby became Unix-like, LF (\n) became the newline sequence. Only the long-obsolete Mac OS 9 and earlier used CR-only (\r) newlines.

Steve Lee (@SteveL-MSFT)

Steve Lee (@SteveL-MSFT) - I hinted at the solution above and probably describe it in detail in a linked issue.

If we can infer that a user "pasted" via right click, then we can process keys differently. By tracking the time between key presses, I think it's probably reasonable to infer the user isn't actually typing.

I'm guessing that if the delay between keys is less than 25ms or so, it's not a human typing, especially if we average over enough keys.

Have you tried reversing the paste order when right clicking? Seems like it should be an easy fix, just change from [$len..0] to [0..$len]

Kinda absurd that this simple issue keeps popping up.

Hitting this issue when pasting tab indented multiline code blocks regardless of whether I use CTRL+V or right click, but only in PowerShell 7 (currently on 7.4.1). PSReadline is 2.3.4.

Example block snipped for brevity:

$SharedConfig = [PSCustomObject]@{
	'BIOSPolicyName'            = 'ESXi-BIOS'
	'BootPolicyName'            = 'ESXi-iSCSI'
	'ChassisDiscoveryPolicy'    = '2-link'
	'EthernetPinGroupName'      = 'core'
}

PS 7.4.1

PS 5.1

I found my way here regarding the right-click paste in reverse issue. It's now 2024, and this is still an issue in Powershell 7. I cannot follow the thread above as it just seems the conversation about this died (unless I'm missing something), but the referenced issue (#496) is marked closed. What was the final disposition on this issue? Can it not be fixed? It's so annoying. A right click is easier for me than ctrl+v.

The only solution I found was to use a different console host.

Still not fixed in v7, SEVEN YEARS LATER, as of v7.4.4.
FWIW though, this does not appear to be a problem with Windows 11's "terminal".
I'm also able to work-around this issue with v7 via Shift+Insert pasting

Hey all - I was able to mitigate this by pasting snippit(s)/command(s) into notepad, ensure the formatting is correct, copy the snippit/command from notepad and paste into the console.

FYI you don't have to do all that. Just use Ctrl+V on the keyboard to paste and it should be fine. The issue is only with paste via mouse right-click.

I've been having the same issue; I find this unbelievable this has been open for 7 years, as we come up on the anniversary date!

There's no AI component so the board room doesn't care.

There's no AI component so the board room doesn't care.

Since AI doesn't exist, there can be no AI component

Is this ever going to get fixed???!?!

use this to fix

Add-Content -Path $PROFILE.CurrentUserAllHosts -Value "nSet-PSReadLineKeyHandler -Chord 'Ctrl+Enter' -Function AddLine"; . $PROFILE.CurrentUserAllHosts

`

The bug has finished elementary school. Soon enough it could become a PS developer and try to self-fix.

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Right click paste should work mostly like Ctrl+v paste #579

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Right click paste should work mostly like Ctrl+v paste #579

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Tadas commented on Nov 12, 2017

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