Alias expansion should move cursor to end of command name

Prerequisites

• I have written a descriptive issue title.
• I have searched all open and closed issues to ensure it has not already been reported.
• I have read the troubleshooting guide.
• I am sure this issue is with the extension itself and does not reproduce in a standalone PowerShell instance.
• I have verified that I am using the latest version of Visual Studio Code and the PowerShell extension.
• If this is a security issue, I have read the security issue reporting guidance.

Summary

After typing an alias, if you press Alt + Shift + E to replace it with the full command name, the cursor remains at the original position. It should be moved to the end of the command so you can continue typing.

For example (| denotes the cursor):
cd| > Press expansion shortcut > Se|t-Location

I cannot think of a use case where leaving the cursor in the middle of the command name would be desirable. In fact, inserting a space after the command name (if there isn't already) may be desirable too.

PowerShell Version

PowerShell 7.4.7
Ubuntu 24.04.1 LTS

Visual Studio Code Version

1.96.4

Extension Version

ms-vscode.powershell@2025.0.0

Steps to Reproduce

| denotes the cursor:
cd| > Press alias expansion shortcut Alt + Shift + E > Se|t-Location

Expected:
Set-Location|
Perhaps also insert space after command name, if there isn't one already

Visuals

No response

Logs

No response

Start by locating the alias-expansion command and its Alt+Shift+E keybinding in the extension, then reproduce the behavior with cd|. Done means expanding the alias places the cursor after the full command name, with any spacing behavior resolved by the implementation or tests.