[freebsd-ports] Pilot error or bash dependencies broken?

[Mike Winter]

In spirit of a beginner's first question to 'freebsd-ports' please tell me why bash depends on x11?

in /etc/make.conf I had WITHOUT_X11=yes and I ended up needing Xvfb. This is confusing to me. I get into a nasty loop of failed dependencies:

make install -DWITHOUT_X11 bash
[snip]
===>   xorg-vfbserver-1.6.0,1 depends on executable: Xvfb - not found
===>    Verifying install for Xvfb in /usr/ports/x11-servers/xorg-vfbserver
===>   xorg-vfbserver-1.6.0,1 depends on executable: Xvfb - not found
[snip many same lines]

same result if I remove the WITHOUT_X11 from cmd-line and make.conf and try to make install Xvfb in x11-servers/xorg-vfbserver and the same result if I cd  x11-servers; make install

>pwd 
/usr/ports/shells/bash

# this dependency chain is to my mind very wrong for bash, why?
>make missing bash
x11-servers/xorg-vfbserver
x11-fonts/xorg-fonts-miscbitmaps
x11-fonts/font-alias
devel/bison
graphics/dri
x11/libXinerama
x11/libxkbfile
x11-fonts/libXfont
x11-fonts/libfontenc
x11/libxkbui
x11/libXxf86misc
x11-toolkits/libXaw
x11-toolkits/libXmu
x11/libXpm
x11/pixman
devel/libpciaccess
graphics/libGL
x11-fonts/font-arabic-misc
x11-fonts/font-cursor-misc
x11-fonts/font-daewoo-misc
x11-fonts/font-dec-misc
x11-fonts/font-isas-misc
x11-fonts/font-jis-misc
x11-fonts/font-micro-misc
x11-fonts/font-misc-misc
x11-fonts/font-mutt-misc
x11-fonts/font-schumacher-misc
x11-fonts/font-sony-misc
x11-fonts/font-sun-misc
x11-fonts/encodings
x11-fonts/bdftopcf
x11-fonts/mkfontdir
x11-fonts/mkfontscale
print/freetype2
x11/printproto
x11/libXp
misc/pciids
x11-fonts/font-util