尝试为Markdown定义语法时的raku语法问题

我正在使用以下代码来解析 Markdown 文本的子集：

#!/usr/bin/perl6

use v6;

my @tests = '',         #should print OK
            "nnn",   #should print OK
            'alpha',    #should print OK
            '1234',     #should print OK
            'alpha123', #should print OK
            'a simple test without a heading and whitespaces and 123 numbers',                                                  #should print OK
            'a simple test without a heading with punctuation, whitespaces and 123 numbers.',                                   #should print OK
            'a simple test without a heading with punctuation, whitespaces, 123 numbers, quotes' ", braces (){}<>[], /.',     #should print OK
            'a simple test with a # in the middle',                                                                             #should print OK
            "#heading",         #should print FAILED
            "#heading ",        #should print FAILED
            "#headingn",       #should print OK
            "#heading n",      #should print OK
            "#headingnand a text",                     #should print OK
            "#headingnandnantextnwithnnewlines",   #should print OK
            "#heading1nand textn#heading2nand text"  #should print OK
            ;

grammar markdown_ltd {
    rule TOP {
        [ <text> | <headingandtext>+ ]
    }
    rule text {
        <textline>*<lasttextline>?
    }
    rule textline {
        <textlinecontent>? [n]
    }
    rule lasttextline {
        <textlinecontent>
    }
    rule textlinecontent {
        <[N]-[#]> [N]*
    }
    rule headingandtext {
        <heading> [n] <text>
    }
    rule heading {
        [#] [N]+
    }
}
for @tests -> $test {
    my $result = markdown_ltd.parse($test);
    say "nTesting '" ~ $test ~ "' " ~ ($result ?? 'OK' !! 'FAILED');
}

此语法的目的是检测标题和常规文本。但是，代码中存在一些错误，因此包含的测试不会导致预期的行为。当我运行脚本时，我得到以下输出：

Testing '' OK

Testing '


' OK

Testing 'alpha' FAILED

Testing '1234' FAILED

Testing 'alpha123' FAILED

Testing 'a simple test without a heading and whitespaces and 123 numbers' OK

Testing 'a simple test without a heading with punctuation, whitespaces and 123 numbers.' OK

Testing 'a simple test without a heading with punctuation, whitespaces, 123 numbers, quotes' ", braces (){}<>[], /.' OK

Testing 'a simple test with a # in the middle' OK

Testing '#heading' FAILED

Testing '#heading ' FAILED

Testing '#heading
' FAILED

Testing '#heading 
' FAILED

Testing '#heading
and a text' FAILED

Testing '#heading
and
a
text
with
newlines' FAILED

Testing '#heading1
and text
#heading2
and text' FAILED

这与我预期的输出不同。

回答