Powershell $profile

profile.ps1

# PSReadLine configuration
# - Visual styling
# - Bash/zsh-style editing chords
# - History-based prediction tuning

# Guard: do nothing if PSReadLine is unavailable (e.g., non-interactive hosts)
if (-not (Get-Module -ListAvailable -Name PSReadLine)) { return }

# Base options: prompt + colours
$PSROptions = @{
    ContinuationPrompt = '  '   # Shown for wrapped / continued lines
    Colors             = @{
        Operator         = $PSStyle.Foreground.Magenta
        Parameter        = $PSStyle.Foreground.Magenta
        Selection        = $PSStyle.Background.BrightBlack
        InLinePrediction = $PSStyle.Foreground.BrightYellow + $PSStyle.Background.BrightBlack
    }

    # Prediction and history behaviour
    PredictionSource    = 'History'   # Use command history for suggestions
    PredictionViewStyle = 'ListView'  # Show suggestions as a list
    HistoryNoDuplicates = $true       # Avoid duplicating identical commands
    MaximumHistoryCount = 50000       # Retain up to 50 000 history entries
}

Set-PSReadLineOption @PSROptions

# Key bindings (bash/zsh-like)

# Ctrl+F: forward one word (note: default is usually "forward character")
Set-PSReadLineKeyHandler -Chord 'Ctrl+f' -Function ForwardWord

# Ctrl+W: delete the word to the left of the cursor
Set-PSReadLineKeyHandler -Chord 'Ctrl+w' -Function BackwardKillWord

# Alt+D: delete the word to the right of the cursor
Set-PSReadLineKeyHandler -Chord 'Alt+d' -Function KillWord

# Ctrl+U: delete from cursor to beginning of the line (bash/zsh kill-line-left)
Set-PSReadLineKeyHandler -Chord 'Ctrl+u' -Function BackwardDeleteLine

# Ctrl+D: if line is empty, run "exit"; otherwise delete character under cursor
Set-PSReadLineKeyHandler -Chord 'Ctrl+d' -ScriptBlock {
    $line = $null
    $cursor = 0
    [Microsoft.PowerShell.PSConsoleReadLine]::GetBufferState([ref]$line, [ref]$cursor)

    if ([string]::IsNullOrEmpty($line)) {
        [Microsoft.PowerShell.PSConsoleReadLine]::Insert('exit')
        [Microsoft.PowerShell.PSConsoleReadLine]::AcceptLine()
    } else {
        [Microsoft.PowerShell.PSConsoleReadLine]::DeleteChar()
    }
}


# Enter: validate syntax then accept the line (prevents executing incomplete input)
Set-PSReadLineKeyHandler -Chord 'Enter' -Function ValidateAndAcceptLine

# Custom shell
# Update with
#   winget upgrade JanDeDobbeleer.OhMyPosh --source winget
oh-my-posh init pwsh --config 'https://raw.githubusercontent.com/JanDeDobbeleer/oh-my-posh/refs/heads/main/themes/rudolfs-light.omp.json' | Invoke-Expression