/usr/share/php/HTMLPurifier/ConfigSchema/schema/HTML.Doctype.txt is in php-htmlpurifier 4.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 | HTML.Doctype
TYPE: string/null
DEFAULT: NULL
--DESCRIPTION--
Doctype to use during filtering. Technically speaking this is not actually
a doctype (as it does not identify a corresponding DTD), but we are using
this name for sake of simplicity. When non-blank, this will override any
older directives like %HTML.XHTML or %HTML.Strict.
--ALLOWED--
'HTML 4.01 Transitional', 'HTML 4.01 Strict', 'XHTML 1.0 Transitional', 'XHTML 1.0 Strict', 'XHTML 1.1'
--# vim: et sw=4 sts=4
|