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-rw-r--r--lua/lexers/litcoffee.lua21
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diff --git a/lua/lexers/litcoffee.lua b/lua/lexers/litcoffee.lua
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+-- Copyright 2006-2013 Robert Gieseke. See LICENSE.
+-- Literate CoffeeScript LPeg lexer.
+-- http://coffeescript.org/#literate
+
+local l = require('lexer')
+local token = l.token
+local P = lpeg.P
+
+local M = {_NAME = 'litcoffee'}
+
+-- Embedded in Markdown.
+local markdown = l.load('markdown')
+M._lexer = markdown -- ensure markdown's rules are loaded, not HTML's
+
+-- Embedded CoffeeScript.
+local coffeescript = l.load('coffeescript')
+local coffee_start_rule = token(l.STYLE_EMBEDDED, (P(' ')^4 + P('\t')))
+local coffee_end_rule = token(l.STYLE_EMBEDDED, l.newline)
+l.embed_lexer(markdown, coffeescript, coffee_start_rule, coffee_end_rule)
+
+return M