Test-Regex.ps1

[cmdletbinding()]
Param(
$UnzipSearch = '(?s)(<([^>]+)>.*?</\2>)',
$UnzipReplace = "`n`$1`n",
$SnipSnipSearch = '(?m)(?<=^<.*)`n',
$SnipSnipReplace = '',
$RezipSearch = "`n",
$RezipReplace = ''

)

$Tests = 'foo`n<ul>`n<li>Coffee</li>`n<li>Tea</li>`n<li>Milk</li>`n</ul>`nbar',
'<ul>`n<li>Coffee</li>`n<li>Tea</li>`n<li>Milk</li>`n</ul>',
'Keep `nme<b> No`nNo`nNo`nNo</b>Mamamia`nLETHIMGO<b>bo`nld</b>`nNext!',
'Keep `nme<b> No`nNo`nNo`nNo</b>Mamamia`nLETHIMGO<b>bold</b>',
'Keep `nme<b> No`nNo`nNo`nNo</b>Mamamia`nLETHIMGO',
'Finally'


$Tests | % {
	$_
	"-"*20
	$_ -replace $UnzipSearch, $UnzipReplace -replace $SnipSnipSearch, 
	$SnipSnipReplace -replace $RezipSearch, $RezipReplace | 
	Write-host -ForegroundColor Green ; "="*30
}