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-- Copyright 2017-2025 Marc André Tanner. See LICENSE.
-- git-rebase(1) LPeg lexer.
local lexer = lexer
local P, R = lpeg.P, lpeg.R
local lex = lexer.new(..., {lex_by_line = true})
-- Comments.
lex:add_rule('comment', lex:tag(lexer.COMMENT, lexer.to_eol(lexer.starts_line('#'))))
-- Keywords.
lex:add_rule('keyword', lex:tag(lexer.KEYWORD, lexer.starts_line(lex:word_match(lexer.KEYWORD))))
-- Commit SHA1.
local function patn(pat, min, max)
return -pat^(max + 1) * pat^min
end
lex:add_rule('commit', lex:tag(lexer.NUMBER, patn(R('09', 'af'), 7, 40)))
lex:add_rule('message', lex:tag('message', lexer.to_eol()))
-- Word lists.
lex:set_word_list(lexer.KEYWORD, [[
p pick
r reword
e edit
s squash
f fixup
x exec
d drop
b break
l label
t reset
m merge
]])
return lex
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