Similar to replace_img, but more granular. This allows munging subrefs to be
used for attribute filters, similar to the regex filters. However, the
subref filters can munge the attribute content. An undef return value
means to remove the attribute.
I can write up docs if this interface is approved.
Similar to replace_img, but more granular. This allows munging subrefs to be used for attribute filters, similar to the regex filters. However, the subref filters can munge the attribute content. An undef return value means to remove the attribute.
I can write up docs if this interface is approved.