XML Shallow Parsing using Greppy API

XMLShallowParsing.php

<?php

// [^<]+
$textScanningExpression = 
    p()->not('<')->more;

// [^-]*-
$untilHyphen = 
    p()->not('-')->until->literal('-');

// $untilHyphen(?:[^-]$untilHyphen)*-
$untilTwoHyphens = 
    $untilHyphen .
        p()->silent(
            p()->not('-') .
                $untilHyphen
        ) . p()->until->literal('-');
    
// $untilTwoHyphens>?
$commentCompletionExpression =
    $untilTwoHyphens .
        p()->literal('>')->optional;
        
// [^\]]*]([^\]]+])*]+
$rightSquareBrackets = 
    p()->not(']')->until->capture(
        p()->not(']')->literal(']')->more
    ) . p()->any->literal(']')->more;

PS: Don't give up on p()! We could have $p() with pure PSR-0 compatibility, or Greppy::autodefine('function_name') based on the autodefine RFC https://wiki.php.net/rfc/autodefine

Thanks for the contribution.

The gist is updated.

About the p() function, yes, I do want to provide that.