https://git.ruby-lang.org/ruby.git/commit/?id=b212c7c7d1

From b212c7c7d136dad7391874c5c9ba0b77df5653e2 Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@j...>
Date: Fri, 12 Jun 2020 09:11:43 -0700
Subject: Update example code in Enumerator#chunk documentation [ci skip]

The code assumed that /usr/share/dict/words did not use mixed
case, and it does at least on a few operating systems.

From CryptoRAT (Luke Elliot)

Fixes [Bug #16957]

diff --git a/enum.c b/enum.c
index f49b684..8c8adcf 100644
--- a/enum.c
+++ b/enum.c
@@ -3203,7 +3203,7 @@ chunk_i(RB_BLOCK_CALL_FUNC_ARGLIST(yielder, enumerator)) https://github.com/ruby/ruby/blob/trunk/enum.c#L3203
  *  The following example counts words for each initial letter.
  *
  *    open("/usr/share/dict/words", "r:iso-8859-1") { |f|
- *      f.chunk { |line| line.ord }.each { |ch, lines| p [ch.chr, lines.length] }
+ *      f.chunk { |line| line.upcase.ord }.each { |ch, lines| p [ch.chr, lines.length] }
  *    }
  *    #=> ["\n", 1]
  *    #   ["A", 1327]
-- 
cgit v0.10.2


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