Resource file for bibtool. Just place it in the same directory as the references.bib file.

.bibtoolrsc

# define input and output files
input references.bib
output.file references.bib

# load additional resource files
resource braces

# pretty printing options in alphabetical order
key.format = short
preserve.keys=on 
preserve.key.case=on
print.align=0
print.align.key=0
print.align.string=0
print.indent=2
print.line.length=999999
print.use.tab=off
print.wide.equal=on
sort = on
suppress.initial.newline=on
verbose = on