https://git.ruby-lang.org/ruby.git/commit/?id=dbea0be13d

From dbea0be13dc1f44833eca43a73f3ab898fa27c15 Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@j...>
Date: Fri, 26 Feb 2021 13:27:25 -0800
Subject: [ruby/irb] Update help message for next context-mode of 4

While here, fixing tab/space issues in help message, and sync
rdoc for IRB class to match the help message.

https://github.com/ruby/irb/commit/ef8e3901cc
---
 lib/irb.rb              | 19 ++++++++++++++-----
 lib/irb/lc/help-message | 12 ++++++------
 2 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/lib/irb.rb b/lib/irb.rb
index 7f99974..5a2aed0 100644
--- a/lib/irb.rb
+++ b/lib/irb.rb
@@ -60,7 +60,11 @@ require_relative "irb/easter-egg" https://github.com/ruby/ruby/blob/trunk/lib/irb.rb#L60
 #     -E enc            Same as `ruby -E`
 #     -w                Same as `ruby -w`
 #     -W[level=2]       Same as `ruby -W`
-#     --inspect         Use `inspect' for output (default except for bc mode)
+#     --context-mode n  Set n[0-4] to method to create Binding Object,
+#                       when new workspace was created
+#     --echo            Show result(default)
+#     --noecho          Don't show result
+#     --inspect         Use `inspect' for output
 #     --noinspect       Don't use inspect for output
 #     --multiline       Use multiline editor module
 #     --nomultiline     Don't use multiline editor module
@@ -68,19 +72,24 @@ require_relative "irb/easter-egg" https://github.com/ruby/ruby/blob/trunk/lib/irb.rb#L72
 #     --nosingleline    Don't use singleline editor module
 #     --colorize        Use colorization
 #     --nocolorize      Don't use colorization
-#     --prompt prompt-mode
-#     --prompt-mode prompt-mode
+#     --prompt prompt-mode/--prompt-mode prompt-mode
 #                       Switch prompt mode. Pre-defined prompt modes are
 #                       `default', `simple', `xmp' and `inf-ruby'
 #     --inf-ruby-mode   Use prompt appropriate for inf-ruby-mode on emacs.
 #                       Suppresses --multiline and --singleline.
-#     --simple-prompt   Simple prompt mode
+#     --sample-book-mode/--simple-prompt
+#                       Simple prompt mode
 #     --noprompt        No prompt mode
+#     --single-irb      Share self with sub-irb.
 #     --tracer          Display trace for each execution of commands.
 #     --back-trace-limit n
 #                       Display backtrace top n and tail n. The default
 #                       value is 16.
-#     -v, --version     Print the version of irb
+#     --verbose         Show details
+#     --noverbose       Don't show details
+#     -v, --version	    Print the version of irb
+#     -h, --help        Print help
+#     --                Separate options of irb from the list of command-line args
 #
 # == Configuration
 #
diff --git a/lib/irb/lc/help-message b/lib/irb/lc/help-message
index a80facc..9c3ea85 100644
--- a/lib/irb/lc/help-message
+++ b/lib/irb/lc/help-message
@@ -10,7 +10,7 @@ https://github.com/ruby/ruby/blob/trunk/lib/irb/lc/help-message#L10
 #
 #
 Usage:  irb.rb [options] [programfile] [arguments]
-  -f		    Suppress read of ~/.irbrc
+  -f                Suppress read of ~/.irbrc
   -d                Set $DEBUG to true (same as `ruby -d')
   -r load-module    Same as `ruby -r'
   -I path           Specify $LOAD_PATH directory
@@ -18,7 +18,7 @@ Usage:  irb.rb [options] [programfile] [arguments] https://github.com/ruby/ruby/blob/trunk/lib/irb/lc/help-message#L18
   -E enc            Same as `ruby -E`
   -w                Same as `ruby -w`
   -W[level=2]       Same as `ruby -W`
-  --context-mode n  Set n[0-3] to method to create Binding Object,
+  --context-mode n  Set n[0-4] to method to create Binding Object,
                     when new workspace was created
   --echo            Show result(default)
   --noecho          Don't show result
@@ -31,8 +31,8 @@ Usage:  irb.rb [options] [programfile] [arguments] https://github.com/ruby/ruby/blob/trunk/lib/irb/lc/help-message#L31
   --colorize        Use colorization
   --nocolorize      Don't use colorization
   --prompt prompt-mode/--prompt-mode prompt-mode
-		    Switch prompt mode. Pre-defined prompt modes are
-		    `default', `simple', `xmp' and `inf-ruby'
+                    Switch prompt mode. Pre-defined prompt modes are
+                    `default', `simple', `xmp' and `inf-ruby'
   --inf-ruby-mode   Use prompt appropriate for inf-ruby-mode on emacs.
                     Suppresses --multiline and --singleline.
   --sample-book-mode/--simple-prompt
@@ -41,8 +41,8 @@ Usage:  irb.rb [options] [programfile] [arguments] https://github.com/ruby/ruby/blob/trunk/lib/irb/lc/help-message#L41
   --single-irb      Share self with sub-irb.
   --tracer          Display trace for each execution of commands.
   --back-trace-limit n
-		    Display backtrace top n and tail n. The default
-		    value is 16.
+                    Display backtrace top n and tail n. The default
+                    value is 16.
   --verbose         Show details
   --noverbose       Don't show details
   -v, --version	    Print the version of irb
-- 
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