## language
{	scopeName = 'text.tex.latex';
	fileTypes = ( 'tex' );
	patterns = (
		{	name = 'comment.line.magic-section.latex';
			match = '^%\s+[A-Z0-9]+.+\n?$';
		},
		{	include = 'text.tex.latex'; },
	);
}

works without any problems

## preference
{	showInSymbolList = 1;
	symbolTransformation = '
         s/^%.*([A-Z0-9]+.+)\n?$/    $1/;
		s/^\\.*\{(.+)\}/$1/;
	';
}