I'm new to Haskell and HaXml and I'm playing around with the latter to clean some (well-formed) 'legacy' html. This works fine except for the following cases. Some of the elements to be cleaned are:

<font size="4"><i>Hello World</i></font> <i><font size="4">Hello World</font></i>

This should become:

<h1 class="subtitle">Hello World</h1>

From what I could gather from the documentation, it should be something like:

foldXml (txt ?> keep :> (attrval("size",AttValue[Left "4"]) `o` tag "font") /> tag "i" ?> replaceTag "h1" :> children)

Is the bracketing correct? I can't remember the precedence of the operators offhand, but perhaps it should be foldXml (txt ?> keep :> (((attrval("size",AttValue[Left "4"]) `o` tag "font") /> tag "i") ?> replaceTag "h1" :> children)) Yes, the braketing is correct since the following code: foldXml (txt ?> keep :> fontSize4 /> tag "em" ?> mkSubtitle :> children) fontSize4 = (attrval("size",AttValue[Left "4"]) `o` tag "font") mkSubtitle = mkElemAttr "h1" [("class", ("subtitle"!))] [children] now transforms <font size="4"><em>Hello World</em></font> into <h1 class="subtitle"><em> fontSize4 ?> mkSubtitle :> Which doesn't work, and I don't know why. If the first example works, shouldn't the second, too? I also tried tag "em" /> font ?> mkSubtitle :> Which doesn't work either. I transformed it into tag "font" `o` children `o` tag "em" ?> mkSubtitle :> without avail. Again, any ideas are welcome. (btw: I like HaXml, Malcolm, nice work!) Koen.