Reset current history position on enter

Author: clue

src/Readline.php

@@ -588,6 +588,10 @@ public function deleteChar($n)
      */
     protected function processLine()
     {
+        // reset history cycle position
+        $this->historyPosition = null;
+        $this->historyUnsaved = null;
+
         // store and reset/clear/redraw current input
         $line = $this->linebuffer;
         if ($line !== '') {

tests/ReadlineTest.php

@@ -678,6 +678,20 @@ public function testHistoryUpBeyondTopCyclesToFirst()
         $this->assertEquals('a', $this->readline->getInput());
     }
 
+    public function testHistoryUpAndThenEnterRestoresCycleToBottom()
+    {
+        $this->readline->addHistory('a');
+        $this->readline->addHistory('b');
+
+        $this->readline->onKeyUp();
+
+        $this->readline->onKeyEnter();
+
+        $this->readline->onKeyUp();
+
+        $this->assertEquals('b', $this->readline->getInput());
+    }
+
     public function testHistoryDownNotCyclingDoesNotChangeInput()
     {
         $this->readline->onKeyDown();