Reformatted Lua LPeg lexers and added new convenience functions and pattern.

`lexer.range()` replaces `lexer.delimited_range()` and `lexer.nested_pair()`.
`lexer.to_eol()` replaces `patt * lexer.nonnewline^0` constructs.
`lexer.number` replaces `lexer.float + lexer.integer`.
Also added unit tests for lexer functions.

1 files changed, 4 insertions, 4 deletions

diff --git a/lexlua/tex.lua b/lexlua/tex.lua
index 9e707f9be..8c9e76860 100644
--- a/lexlua/tex.lua
+++ b/lexlua/tex.lua
@@ -12,16 +12,16 @@ local lex = lexer.new('tex')
 lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
 
 -- Comments.
-lex:add_rule('comment', token(lexer.COMMENT, '%' * lexer.nonnewline^0))
+lex:add_rule('comment', token(lexer.COMMENT, lexer.to_eol('%')))
 
 -- TeX environments.
 lex:add_rule('environment', token('environment', '\\' * (P('begin') + 'end') *
-                                                 lexer.word))
+  lexer.word))
 lex:add_style('environment', lexer.STYLE_KEYWORD)
 
 -- Commands.
-lex:add_rule('command', token(lexer.KEYWORD, '\\' *
-                                             (lexer.alpha^1 + S('#$&~_^%{}'))))
+lex:add_rule('command', token(lexer.KEYWORD, '\\' * (lexer.alpha^1 +
+  S('#$&~_^%{}'))))
 
 -- Operators.
 lex:add_rule('operator', token(lexer.OPERATOR, S('$&#{}[]')))