From 103b04128f4e40b87bb9c7fb2916d2a800bfd94f Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Mon, 2 Dec 2019 04:17:47 +0900
Subject: Support incremental search again by C-r in incremental search

---
 lib/reline/line_editor.rb | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'lib')

diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index 950bc3a955..fb0b47d7ee 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -1158,6 +1158,7 @@ class Reline::LineEditor
       last_hit = nil
       loop do
         key = Fiber.yield(search_word)
+        search_again = false
         case key
         when "\C-h".ord, "\C-?".ord
           grapheme_clusters = search_word.grapheme_clusters
@@ -1165,6 +1166,8 @@ class Reline::LineEditor
             grapheme_clusters.pop
             search_word = grapheme_clusters.join
           end
+        when "\C-r".ord
+          search_again = true
         else
           multibyte_buf << key
           if multibyte_buf.dup.force_encoding(@encoding).valid_encoding?
@@ -1177,7 +1180,11 @@ class Reline::LineEditor
           @history_pointer = nil
           hit = @line_backup_in_history
         else
-          if @history_pointer
+          if search_again
+            if @history_pointer
+              history = Reline::HISTORY[0..(@history_pointer - 1)]
+            end
+          elsif @history_pointer
             history = Reline::HISTORY[0..@history_pointer]
           else
             history = Reline::HISTORY
@@ -1237,7 +1244,7 @@ class Reline::LineEditor
         @cursor = @byte_pointer = 0
       else
         chr = k.is_a?(String) ? k : k.chr(Encoding::ASCII_8BIT)
-        if chr.match?(/[[:print:]]/) or k == "\C-h".ord or k == "\C-?".ord
+        if chr.match?(/[[:print:]]/) or k == "\C-h".ord or k == "\C-?".ord or k == "\C-r".ord
           searcher.resume(k)
         else
           if @history_pointer
-- 
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