markup to parse (see markup format)
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. out[allow-none]
address of return location for text with tags stripped, or NULL. out[allow-none]
address of return location for accelerator char, or NULL. out[allow-none]
FALSE if error is set, otherwise TRUE
GException on failure.
Parses marked-up text (see markup format) to create a plain-text string and an attribute list. 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 pango_markup_parser_new(). If any error happens, none of the output arguments are touched except for error.