Finally, here is example output from a few runs:

md5i@maru2:~/src/emacs/build$ /tmp/test.sh 
Warning: Cannot convert string "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" to type FontStruct
Width == 84
md5i@maru2:~/src/emacs/build$ /tmp/test.sh 
Warning: Cannot convert string "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" to type FontStruct
Width == 84
md5i@maru2:~/src/emacs/build$ /tmp/test.sh 
Warning: Cannot convert string "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" to type FontStruct
Warning: Cannot convert string "-*-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-*" to type FontStruct
Width == 84

-- 
Michael Welsh Duggan
(md5i@md5i.com)