'domain error' if input files lack newline

[jimav]

Binary package hint: tkdiff

If the input files do not contain any newlines (not even a final newline), then a pop-up appears with the following error:

domain error: argument not in valid range
domain error: argument not in valid range
    while executing
"expr {int(($s2 - 1) * $factor) + $g(mapborder)}"
    (procedure "create-map" line 23)
    invoked from within
"create-map map $mapwidth $mapheight"
    (procedure "map-resize" line 28)
    invoked from within
"map-resize 0.0 1.0"

I will attach demo files.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: tkdiff 1:4.1.4-1
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
Architecture: amd64
Date: Sat Oct 2 23:45:08 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64 (20100928)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: tkdiff