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Severity Level: Information
Description
This rule detects static strings enclosed with double quotes ("<text>") with text that doesn't
contain variables, expressions, or special characters that require escaping.
Enclose text with single quotes ('<text>') when the value of a string is constant. A constant
string doesn't contain variables or expressions intended to insert values into the string, such as
"$PID-$(hostname)". Using single quotes makes the intent clearer that the string is constant and
allows you to use special characters such as $ without needing to escape them.
However, there are exceptions where this rule doesn't flag violations:
- Double-quoted strings are preferred when the string contains single quotes
- Embedded escape sequences like newline (
"`n") - Other special characters that require escaping
Example
Noncompliant
$constantValue = "I Love PowerShell"
Compliant
$constantValue = 'I Love PowerShell'