#requires -version 3.0

Function Edit-RecentFile {

<#
.Synopsis
Open selected files for editing in the PowerShell ISE
.Description
This command will list the most recently modified files in the specified
directory. By default the command will list the 25 most recently modified 
files. Using Out-Gridview as an interface, you can select the files you 
wish to edit and they will open in the PowerShell ISE. If you are already in
the ISE then each file will open in a new tab.

This command requires PowerShell v3.
.Example
PS C:\> edit-recentfile d:\myscripts -last 10
.Example
PS C:\> edit-recentfile c:\work\*.txt
#>

[cmdletbinding()]
Param(
[Parameter(Position=0)]
[ValidateScript({Test-Path $_})]
[string]$Path="c:\scripts",
[Parameter(Position=1)]
[ValidateNotNullorEmpty()]
[int]$Last=25,
[switch]$Recurse
)

Write-Verbose "Getting $last recent files from $path."

#get last X number of files from the path and pipe to Out-Gridview
$files = Get-ChildItem -Path $Path -file -Recurse:$Recurse | 
Sort-Object -Property LastWriteTime -Descending | 
Select-Object -First $Last -Property FullName,LastWriteTime,Length,Extension |
Out-GridView -Title "Select one or more files to edit and click OK" -PassThru

#if files were selected, open them in the ISE
if ($files) {
 Write-Verbose "Opening`n$($files.fullname | out-string)"
 #if in the ISE use PSEDIT
 if ($host.name -match "ISE") {
 Write-Verbose "Detected the PowerShell ISE"
 psedit $files.Fullname
}
 else {
 #otherwise assume we're in the console
 Write-Verbose "Defaulting to PowerShell console"
 ise ($files.FullName -join ",")
}
} #if $files

} #close Edit-RecentFile

#define an optional alias
Set-Alias -Name erf -Value Edit-RecentFile