<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 22, 2013 at 3:47 PM, Matthew Flatt <span dir="ltr"><<a href="mailto:mflatt@cs.utah.edu" target="_blank">mflatt@cs.utah.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">(define (frac a b)<br>
</div> (lift-above-baseline<br>
<div class="im"> (vc-append<br>
a<br>
(hline (max (pict-width a) (pict-width b)) 20)<br>
b)<br>
</div> (- (pict-descent b) (pict-height b))))<br>
<br>
(slide (hbl-append (t "x=") (frac (t "1234") (t "5678"))))</blockquote></div><br><br></div><div class="gmail_extra">Indeed it works! I had tried with negative values but I probably had done it wrong then.<br>
</div><div class="gmail_extra">Thank you!<br><br>Laurent<br></div></div>