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Created January 18, 2012 21:48
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A PowerShell function to colorize a sequence of text lines that represent an Universal Diff. For more information, see
function Out-Diff {
Redirects a Universal DIFF encoded text from the pipeline to the host using colors to highlight the differences.
Helper function to highlight the differences in a Universal DIFF text using color coding.
.Parameter InputObject
The text to display as Universal DIFF.
[Parameter(Mandatory=$true, ValueFromPipeline=$true)]
Process {
$contentLine = $InputObject | Out-String
if ($contentLine -match "^Index:") {
Write-Host $contentLine -ForegroundColor Cyan -NoNewline
} elseif ($contentLine -match "^(\+|\-|\=){3}") {
Write-Host $contentLine -ForegroundColor Gray -NoNewline
} elseif ($contentLine -match "^\@{2}") {
Write-Host $contentLine -ForegroundColor Gray -NoNewline
} elseif ($contentLine -match "^\+") {
Write-Host $contentLine -ForegroundColor Green -NoNewline
} elseif ($contentLine -match "^\-") {
Write-Host $contentLine -ForegroundColor Red -NoNewline
} else {
Write-Host $contentLine -NoNewline
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