Changes the URI of a bookmark item from old_uri to new_uri. Any
existing bookmark for new_uri will be overwritten. If new_uri is
NULL, then the bookmark is removed.
In the event the URI cannot be found, FALSE is returned and
error is set to G_BOOKMARK_FILE_ERROR_URI_NOT_FOUND.
Since 2.12
Changes the URI of a bookmark item from old_uri to new_uri. Any existing bookmark for new_uri will be overwritten. If new_uri is NULL, then the bookmark is removed. In the event the URI cannot be found, FALSE is returned and error is set to G_BOOKMARK_FILE_ERROR_URI_NOT_FOUND. Since 2.12