Small gawk script to put all the pages= page ranges in a .bib file into a uniform format, either 1234-1256 or upon request 1234-56; 12-12 always scrunched to just 1234; squeezes out spaces around separator; can make all separators one-dash or two-dashes upon request. Very very conservative: probably impossible for it to actually mess up a file. The author is Barak A. Pearlmutter.