slugify.sed

a sed script to slugify tags

# change all to lowercase
y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/

# trim leading non-alpha characters
s/^[^[:alpha:]]\{1,\}//

# trim trailing non-alpha characters
s/[^[:alpha:]]\{1,\}$//

# replace runs of anything not a letter with a dash
s/[^[:alpha:]]\{1,\}/-/g