From 3becfa1d66568ee4abb164cb236d1714335c3d6c Mon Sep 17 00:00:00 2001
From: Ruby <test@ruby-lang.org>
Date: Fri, 5 May 2023 04:12:20 +0900
Subject: [PATCH] `no_lineno` config optiopn (default: false)

See https://github.com/ruby/debug/issues/881
---
 README.md                   |  3 +++
 lib/debug/config.rb         |  1 +
 lib/debug/thread_client.rb  | 12 ++++++++----
 test/console/config_test.rb | 19 +++++++++++++++++++
 4 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 5e7b72b27..c46a5d058 100644
--- a/README.md
+++ b/README.md
@@ -476,6 +476,7 @@ config set no_color true
   * `RUBY_DEBUG_NO_SIGINT_HOOK` (`no_sigint_hook`): Do not suspend on SIGINT (default: false)
   * `RUBY_DEBUG_NO_RELINE` (`no_reline`): Do not use Reline library (default: false)
   * `RUBY_DEBUG_NO_HINT` (`no_hint`): Do not show the hint on the REPL (default: false)
+  * `RUBY_DEBUG_NO_LINENO` (`no_lineno`): Do not show line numbers (default: false)
 
 * CONTROL
   * `RUBY_DEBUG_SKIP_PATH` (`skip_path`): Skip showing/entering frames for given paths
@@ -908,6 +909,8 @@ Attach mode:
   'rdbg -A host port' tries to connect to host:port via TCP/IP.
 
 Other options:
+    -v                               Show version number
+        --version                    Show version number and exit
     -h, --help                       Print help
         --util=NAME                  Utility mode (used by tools)
         --stop-at-load               Stop immediately when the debugging feature is loaded.
diff --git a/lib/debug/config.rb b/lib/debug/config.rb
index 1a95ce2b2..f6f1a066d 100644
--- a/lib/debug/config.rb
+++ b/lib/debug/config.rb
@@ -21,6 +21,7 @@ module DEBUGGER__
     no_sigint_hook: ['RUBY_DEBUG_NO_SIGINT_HOOK', "UI: Do not suspend on SIGINT",               :bool, "false"],
     no_reline:      ['RUBY_DEBUG_NO_RELINE',      "UI: Do not use Reline library",              :bool, "false"],
     no_hint:        ['RUBY_DEBUG_NO_HINT',        "UI: Do not show the hint on the REPL",       :bool, "false"],
+    no_lineno:      ['RUBY_DEBUG_NO_LINENO',      "UI: Do not show line numbers",               :bool, "false"],
 
     # control setting
     skip_path:      ['RUBY_DEBUG_SKIP_PATH',      "CONTROL: Skip showing/entering frames for given paths", :path],
diff --git a/lib/debug/thread_client.rb b/lib/debug/thread_client.rb
index e28e1c0cf..57a802615 100644
--- a/lib/debug/thread_client.rb
+++ b/lib/debug/thread_client.rb
@@ -469,10 +469,14 @@ def get_src(frame,
       if file_lines = frame.file_lines
         frame_line = frame.location.lineno - 1
 
-        lines = file_lines.map.with_index do |e, i|
-          cur = i == frame_line ? '=>' : '  '
-          line = colorize_dim('%4d|' % (i+1))
-          "#{cur}#{line} #{e}"
+        if CONFIG[:no_lineno]
+          lines = file_lines
+        else
+          lines = file_lines.map.with_index do |e, i|
+            cur = i == frame_line ? '=>' : '  '
+            line = colorize_dim('%4d|' % (i+1))
+            "#{cur}#{line} #{e}"
+          end
         end
 
         unless start_line
diff --git a/test/console/config_test.rb b/test/console/config_test.rb
index 9925c017d..589be7488 100644
--- a/test/console/config_test.rb
+++ b/test/console/config_test.rb
@@ -411,4 +411,23 @@ def test_debugger_takes_log_level_config_from_config_option
       end
     end
   end
+
+  class NoLinenoTest < ConsoleTestCase
+    def program
+      <<~RUBY
+      1| a = :a
+      2| b = :b
+      3| c = :c
+      RUBY
+    end
+
+    def test_no_lineno
+      debug_code(program) do
+        type 'config set no_lineno true'
+        type 'list'
+        assert_no_line_text(/^\s*\d/)
+        type 'c'
+      end
+    end
+  end
 end