sluaggo

Sluggo slug generator implemented in Lua. Primarily intended for (although not limited to) use in Pandoc filters.

References

• sluggo.js
• utf8data.lua — originally (?) from here, but more recently found here, and other locations.

Installation

Copy the following files to a directory in which Lua will look for packages:

• sluaggo.lua
• sluggo_ranges.lua
• utf8case.lua
• utf8data.lua

Notes:

• utf8case.lua and utf8data.lua are not required when running inside Pandoc
• utf8data.lua is not required if this file is already in the package path

Or, add the sluaggo directory to your shell’s LUA_PATH:

export LUA_PATH='$HOME/some/dir/sluaggo/?.lua;;'

(Note the double semicolon.)

Or, Lua’s package.path:

package.path = os.getenv('HOME')..'/some/dir/sluaggo/?.lua;'..package.path

Usage

local sluaggo = require('sluaggo')

s = sluaggo.sluaggo('@ monkey\'s are elab؉؉orate fools##')
print(s)

Outputs:

monkey-s-are-elab-orate-fools

Options

separator

Change the string separator by passing a string (usually one character) to separator.

local sluaggo = require('sluaggo')

s = sluaggo.sluaggo('monkey\'s are elaborate fools', { separator = ','})
print(s)

Outputs:

monkey,s,are,elaborate,fools

allow

Set a single-character string to allow in returned strings. Otherwise all punctuation characters are replaced by the separator.

local sluaggo = require('sluaggo')

s = sluaggo.sluaggo('@ monkey\'s are elab؉؉orate fools##', { allow = '؉'})
print(s)

Outputs:

monkey-s-are-elab؉؉orate-fools

Testing

Standalone

lua test/test.lua

Pandoc

pandoc --pdf-engine=xelatex -o test.pdf --lua-filter test/test.lua README.md