powershell-bespoke-history.ps1

## Command history
# Improve on PSReadLine's history heuristic without having to re-implement from scratch.

$commandHistoryHandler = @{
    HistoryNoDuplicates = $false
    HistorySaveStyle    = [Microsoft.PowerShell.HistorySaveStyle]::SaveIncrementally
    AddToHistoryHandler = {
        param([string] $line)
        <# spammy #> if ($line -in 'exit', 'ls', 'pwd', 'cls', 'clear' ) { return $false }
        <# buried #> if ($line -match '\A[ ]{2}\S') { return $false }
        <# assist #> if ($line -match '(?<=^|\b)(?<!\$)(help|get-help|man)(?=\b|$)(?![-:]| *=)') {
            $sensitive = -not [Microsoft.PowerShell.PSConsoleReadLine]::GetDefaultAddToHistoryOption($line)
            return $sensitive ? $false : [Microsoft.PowerShell.AddToHistoryOption]::MemoryOnly
        }
        <# secret #> if ($line -match 'password|asplaintext|securestring|from-secure|to-secure|key|token') {
            return [Microsoft.PowerShell.PSConsoleReadLine]::GetDefaultAddToHistoryOption($line)
        }
        <# normal #> return [Microsoft.PowerShell.AddToHistoryOption]::MemoryAndFile
    }
}
Set-PSReadLineOption @commandHistoryHandler