Great client!

Here's some small bits to add if you like using ^U to get rid of the text in the input widget...

Around line 541, you originally have:

    $Inputfield->bind("<Return>", \&Say_Click);
    $Inputfield->bind("<Control-Return>", \&Msg_Click);
    $Inputfield->bind("<Tab>", \&completeName);
[download]

insert the ^U binding after the statements above:

    $Inputfield->bind("<Control-u>", \&clearentrybox);
[download]

and around line 682, between the end of the Msg_Click sub and the beginning of the completeName sub, I put my ^U subroutine:

######################################################################
+##########
#
# clearentrybox
#
# clears the entry box on ^U
#
sub clearentrybox {
    $Inputfield->delete(0,'end');
}
[download]

So far, so good here on my system... a perusal of Tk::Text didn't reveal conflicts with normal keys...

(Update: Added context to make locating the spots to put the code a tad easier)

--
Me spell chucker work grate. Need grandma chicken.