fop fails if environmental variable HOME includes a space

$ HOME="/home/tsteven4/work/doc link" fop -q -fo gpsbabel.fo -pdf gpsbabel.pdf
/usr/bin/fop: 46: .: cannot open /home/tsteven4/work/doc: No such file

from /usr/bin/fop we can see $HOME is getting word split.
 44 # Load user's preferences, if any
 45 if [ -f "$HOME/.foprc" ]; then
 46 . $HOME/.foprc
 47 fi

The fix is
$ diff /usr/bin/fop fop
46c46
< . $HOME/.foprc
---
> . "$HOME/.foprc"

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: fop 1:2.6-2
Uname: Linux 5.15.68.1-microsoft-standard-WSL2 x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Fri Oct 21 05:23:19 2022
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: fop
UpgradeStatus: No upgrade log present (probably fresh install)