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1local info = {
2    version   = 1.002,
3    comment   = "scintilla lpeg lexer that triggers whitespace backtracking",
4    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
5    copyright = "PRAGMA ADE / ConTeXt Development Team",
6    license   = "see context related readme files",
7}
8
9-- the lexer dll doesn't backtrack when there is no embedded lexer so
10-- we need to trigger that, for instance in the bibtex lexer, but still
11-- we get failed lexing
12
13local lexer        = require("scite-context-lexer")
14local context      = lexer.context
15local patterns     = context.patterns
16
17local token        = lexer.token
18
19local dummylexer   = lexer.new("dummy","scite-context-lexer-dummy")
20local whitespace   = dummylexer.whitespace
21
22local space        = patterns.space
23local nospace      = (1-space)
24
25local t_spacing    = token(whitespace, space  ^1)
26local t_rest       = token("default",  nospace^1)
27
28dummylexer._rules = {
29    { "whitespace", t_spacing },
30    { "rest",       t_rest    },
31}
32
33dummylexer._tokenstyles = context.styleset
34
35return dummylexer
36