functions.Start-MSYS2.ps1

# Invoke MSYS bash directly without msys2_shell.cmd
function mbash {
    param(
        [Parameter(ValueFromRemainingArguments=$true)]
        [string[]]$RemainingArgs
    )
    $msysArgs = @(
                'MSYSTEM=MSYS'   ,  'MSYS2_PATH_TYPE='             ,
                'MSYSCON='       ,  'MSYS=winsymlinks:nativestrict',
                'LOGINSHELL=bash',  '/usr/bin/bash'                ,
                '--login',          '-i'
    )
    if ($RemainingArgs) { $msysArgs += '-c',$RemainingArgs }
    if ($null -ne (
            $msysPath = Get-ChildItem "${env:SystemDrive}\" -Recurse `
                        -Depth 2 -Filter "msys2_shell.cmd" -EA 0 |
                        foreach { Split-Path $_.FullName -Parent } )
    ) {} else { throw(New-Object([IO.DirectoryNotFoundException]'')) }
    pushd $msysPath -ErrorAction:Stop   # Push-Location
    .\usr\bin\env.exe @msysArgs
    popd                                # Pop-Location
}
# Invoke MINGW64 bash directly without msys2_shell.cmd
function mgwbash {
    param(
        [Parameter(ValueFromRemainingArguments=$true)]
        [string[]]$RemainingArgs
    )
    $msysArgs = @(
            'MSYSTEM=MINGW64',  'MSYS2_PATH_TYPE=inherit'      ,
            'MSYSCON='       ,  'MSYS=winsymlinks:nativestrict',
            'LOGINSHELL=bash',  '/usr/bin/bash'                ,
            '--login',          '-i'
    )
    if ($null -ne (
            $msysPath = Get-ChildItem "${env:SystemDrive}\" -Recurse `
                        -Depth 2 -Filter "msys2_shell.cmd" -EA 0 |
                        foreach { Split-Path $_.FullName -Parent } )
    ) {} else { throw(New-Object([IO.DirectoryNotFoundException]'')) }
    if ($RemainingArgs) { $msysArgs += '-c',$RemainingArgs }
    pushd $msysPath -ErrorAction:Stop   # Push-Location
    .\usr\bin\env.exe @msysArgs
    popd                                # Pop-Location
}