https://git.ruby-lang.org/ruby.git/commit/?id=7732052718

From 77320527180018a3083a287afee99ac6549b0d0d Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@g...>
Date: Mon, 11 Oct 2021 20:40:44 +0900
Subject: [ruby/irb] Add help about extra doc dir option

https://github.com/ruby/irb/commit/5018f2cb99
---
 lib/irb/lc/help-message | 1 +
 man/irb.1               | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/lib/irb/lc/help-message b/lib/irb/lc/help-message
index cee860fdeb..939dc38975 100644
--- a/lib/irb/lc/help-message
+++ b/lib/irb/lc/help-message
@@ -20,6 +20,7 @@ Usage:  irb.rb [options] [programfile] [arguments] https://github.com/ruby/ruby/blob/trunk/lib/irb/lc/help-message#L20
   -W[level=2]       Same as `ruby -W`
   --context-mode n  Set n[0-4] to method to create Binding Object,
                     when new workspace was created
+  --extra-doc-dir   Add an extra doc dir for the doc dialog
   --echo            Show result (default)
   --noecho          Don't show result
   --echo-on-assignment
diff --git a/man/irb.1 b/man/irb.1
index a8a9b60a53..50db899177 100644
--- a/man/irb.1
+++ b/man/irb.1
@@ -105,6 +105,10 @@ Uses singleline editor module. https://github.com/ruby/ruby/blob/trunk/man/irb.1#L105
 Doesn't use singleline editor module.
 .Pp
 .Pp
+.It Fl -extra-doc-dir
+Add an extra doc dir for the doc dialog.
+.Pp
+.Pp
 .It Fl -echo
 Show result (default).
 .Pp
-- 
cgit v1.2.1


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