vsource/dpip endless loop

I have a recentish version of the html5 working draft as one page, and
it's over 6 megs. If I view source on it, this is rather slow and gives
me time to hit Escape and Ctrl-W. Then top shows vsource using all of
the processor until I kill it.

(gdb) bt
#0  0x0804a843 in a_Dpip_dsh_read_token (dsh=0x9e7ae18, blocking=1)
    at dpip.c:455
#1  0x080491f9 in send_html_text (sh=0x9e7ae18, 
    url=0x9e7ced6 "file:/home/corvid/html5.html.gz", data_size=6402268)
    at vsource.c:121
#2  0x08049460 in main () at vsource.c:219