Returns the next gsv.SourceMark in the buffer or NULL if the mark was not added to a buffer. If there is no next mark, NULL will be returned.
If category is NULL, looks for marks of any category.
a string specifying the mark category, or NULL.
the next gsv.SourceMark, or NULL.
2.2
Returns the next gsv.SourceMark in the buffer or NULL if the mark was not added to a buffer. If there is no next mark, NULL will be returned.
If category is NULL, looks for marks of any category.