如何更改 PowerShell 5 中的字体属性？

Question

I want to make the font as bold for the path that I'm printing using Write-Host . I'm flexible to using other methods like echo or something else.

I've tried other methods like Write-Debug , etc, also checked the module WindowsConsoleFonts . But none of them supports font properties like making them bold or italic while printing them.

$pathString = "[" + (Get-Location) + "]"
Write-Host $pathString -ForegroundColor Cyan

I'm using PowerShell 5.1 which doesn't support MarkDown rendering, else I would have done it using Markdown.

Answer 1

You can achieve bold text via VT (Virtual Terminal) escape sequences .

However, regular Windows console windows ( conhost.exe ) do not support italics , and neither does their upcoming successor, Windows Terminal (at least as of this writing). ^[1]

In recent versions of Windows 10, support for VT sequences is enabled by default in both Windows PowerShell and PowerShell Core .

However, Write-Host has no support for them, so you must embed the escape sequences directly into the strings you pass to Write-Host (or strings you send to the success output stream, if it goes to the console):

Note:

• I'm omitting Write-Host from the examples below, because it isn't strictly necessary, but colored text generally should indeed be written to the display (host), not to the success output stream.

• While it is better to consistently use VT sequences for all formatting needs - including colors - it is possible to combine them with Write-Host -ForegroundColor / -BackgroundColor`.

PowerShell Core :

PowerShell Core supports embedding escape sequences directly in "..." (double-quoted strings), via the `e escape sequence, which expands to a literal ESC character, which is the character that initiates a VT escape sequence.

"To `e[1mboldly`e[m go ..., in `e[36mcyan`e[m."

Windows PowerShell :

There's no support for `e ; the easiest solution is to use \e as placeholders and use -replace to substitute actual ESC characters (Unicode code point 0x1b ) for them:

"To \e[1mboldly\e[m go ..., in \e[36mcyan\e[m." -replace '\\e', [char] 0x1b

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^{[1] From PowerShell Core , you can run the following test command to see if the word italics prints in italics:
"`e[3mitalics`e[m after"
Note that italics in the terminal are supported on macOS and at least in some Linux distros; eg, Ubuntu 18.04}