Extracting two strings using `-match`

Question

I am attempting to parse the string:

helo identity email@test.com Pass (v=spf1)

using -match as follows:

$line -match "helo identity (?<sender>.*) (?<heloresult>.*) (v=spf1)"

I would think this would return:

$matches['sender'] = "email@test.com"
$matches['heloresult'] = "Pass"

However, it returns $false.

Worth noting that the following works as expected:

$line -match "helo identity (?<sender>.*) Pass"
PS C:\> $matches
Name                           Value
----                           -----
sender                         email@test.com
0                              helo identity email@test.com Pass

What am I doing incorrectly to assign these two parts?

Answer 1

Escape the capturing parentheses around the last v=spf1 part to make them literal parentheses. Escape using a backslash, the regex escape character.

PS C:\temp> 'helo identity email@test.com Pass (v=spf1)' -match 'helo identity (?<Sender>.*) (?<HeloResult>.*) \(v=spf1\)'
True

PS C:\temp> $Matches.Values
email@test.com
Pass
helo identity email@test.com Pass (v=spf1)

Answer 2

Turning my comment into an answer as requested:

( and ) are special characters in powershell regular expressions. Literal parenthesis must be escaped with backslashes. The correct RegEx in your case would be:

helo identity (?<sender>.*) (?<heloresult>.*) \(v=spf1\)