Confirmed using different themes.

Environment

• Editor and Version (VS Code, Atom, Sublime): VS Code
• Your primary theme: Abyss

Issue Description

When I use a regular expression that contains a ' then the display will treat it as the beginning, or end, of a test string. The color coding in all themes tests shows all the code as a text string until it encounters another '.

Screenshots

Expected Behavior

Code Samples

Param (
# User account to be modified, this can be any value that Get-ADUser will accept
[Parameter(Mandatory=$true)]
$User,
[Parameter(Mandatory=$true)]
[Int32]$TicketNumber,
# New last name of the person
[ValidatePattern(“^[-'a-z]$”)]
[Parameter(Mandatory=$true)]
$NewLastName,
# User's middle name
[ValidatePattern(“^[-'a-z]$”)]
$NewMiddleName,
# User's new first name,
[ValidatePattern(“^[-'a-z]*$”)]
$NewFirstName,
# Defines how many characters from the first name will be used. Default is 1.
[Int32]$AlternateAliasFirstNameLength = 1,
# For manually specifing the Display Name
[string]$DisplayName,
[Parameter(DontShow)]
[ValidateSet($True,$False)]
[switch]$Approved = $false
)