tex.lua (726B)
- -- Copyright 2006-2024 Mitchell. See LICENSE.
- -- Plain TeX LPeg lexer.
- -- Modified by Robert Gieseke.
- local lexer = lexer
- local P, S = lpeg.P, lpeg.S
- local lex = lexer.new(...)
- -- Comments.
- lex:add_rule('comment', lex:tag(lexer.COMMENT, lexer.to_eol('%')))
- -- TeX environments.
- lex:add_rule('environment', lex:tag('environment', '\\' * (P('begin') + 'end') * lexer.word))
- -- Commands.
- lex:add_rule('command', lex:tag('command', '\\' * (lexer.alpha^1 + S('#$&~_^%{}'))))
- -- Operators.
- lex:add_rule('operator', lex:tag(lexer.OPERATOR, S('$&#{}[]')))
- -- Fold points.
- lex:add_fold_point('environment', '\\begin', '\\end')
- lex:add_fold_point(lexer.OPERATOR, '{', '}')
- lexer.property['scintillua.comment'] = '%'
- return lex