# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 2015-06-20 15:56:09
# Node ID b8b73652c1c97600e7cabea1f628561e00ecd127
# Parent  af329a84310c3d784b3717395b6fc4a32ca736f2

parser: update documentation about tokenizer and elements

diff --git a/mercurial/parser.py b/mercurial/parser.py
--- a/mercurial/parser.py
+++ b/mercurial/parser.py
@@ -10,8 +10,9 @@
 # for background
 
 # takes a tokenizer and elements
-# tokenizer is an iterator that returns type, value pairs
-# elements is a mapping of types to binding strength, prefix and infix actions
+# tokenizer is an iterator that returns (type, value, pos) tuples
+# elements is a mapping of types to binding strength, prefix, infix and
+# optional suffix actions
 # an action is a tree node name, a tree label, and an optional match
 # __call__(program) parses program into a labeled tree