repl: remove lastInputPreview conditional check

PR-URL: #46857
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Kohei Ueno <kohei.ueno119@gmail.com>

lib/internal/repl/utils.js

@@ -147,7 +147,6 @@ function setupPreview(repl, contextSymbol, bufferSymbol, active) {
   }
 
   let inputPreview = null;
-  let lastInputPreview = '';
 
   let previewCompletionCounter = 0;
   let completionPreview = null;
@@ -179,7 +178,6 @@ function setupPreview(repl, contextSymbol, bufferSymbol, active) {
       moveCursor(repl.output, 0, rows);
       clearLine(repl.output);
       moveCursor(repl.output, 0, -rows);
-      lastInputPreview = inputPreview;
       inputPreview = null;
     }
     if (completionPreview !== null) {
@@ -396,9 +394,8 @@ function setupPreview(repl, contextSymbol, bufferSymbol, active) {
 
       wrapped = false;
 
-      // Ignore the output if the value is identical to the current line and the
-      // former preview is not identical to this preview.
-      if (line === inspected && lastInputPreview !== inspected) {
+      // Ignore the output if the value is identical to the current line.
+      if (line === inspected) {
         return;
       }
 

test/parallel/test-repl-reverse-search.js

@@ -238,8 +238,7 @@ const tests = [
       '2\n',
       '\x1B[1G', '\x1B[0J',
       prompt, '\x1B[3G',
-      '2', '\n// 2', '\x1B[4G', '\x1B[1A',
-      '\x1B[1B', '\x1B[2K', '\x1B[1A',
+      '2',
       '\nbck-i-search: _', '\x1B[1A', '\x1B[4G',
       '\x1B[3G', '\x1B[0J',
       'Array(100).fill(1)\nbck-i-search: r_', '\x1B[1A', '\x1B[5G',