markup to parse (see the Pango Markup docs)
length of @markup_text, or -1 if nul-terminated
character that precedes an accelerator, or 0 for none
address of return location for a PangoAttrList, or %NULL
address of return location for text with tags stripped, or %NULL
address of return location for accelerator char, or %NULL
%FALSE if @error is set, otherwise %TRUE
GException on failure.
Parses marked-up text to create a plain-text string and an attribute list.
See the Pango Markup docs for details about the supported markup.
If @accel_marker is nonzero, the given character will mark the character following it as an accelerator. For example, @accel_marker might be an ampersand or underscore. All characters marked as an accelerator will receive a %PANGO_UNDERLINE_LOW attribute, and the first character so marked will be returned in @accel_char. Two @accel_marker characters following each other produce a single literal @accel_marker character.
To parse a stream of pango markup incrementally, use [func@markup_parser_new].
If any error happens, none of the output arguments are touched except for @error.