Commit 83b867d

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Allow ESC key to "cancel" editing an input

It will simply return the initial value (empty string or the placeholder text) when the user presses the ESC key, even if the text was modified.

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Original file line number	Diff line number	Diff line change
`@@ -40,6 +40,8 @@ public function collect(Input $input) : InputResult`
`40`	`40`
`41`	`41`	`$inputValue = $input->getPlaceholderText();`
`42`	`42`	`$havePlaceHolderValue = !empty($inputValue);`
	`43`	`+`
	`44`	`+ $originalValue = $inputValue;`
`43`	`45`
`44`	`46`	`$reader = new NonCanonicalReader($this->terminal);`
`45`	`47`
`@@ -59,6 +61,9 @@ public function collect(Input $input) : InputResult`
`59`	`61`
`60`	`62`	`if ($char->isHandledControl()) {`
`61`	`63`	`switch ($char->getControl()) {`
	`64`	`+ case InputCharacter::ESC:`
	`65`	`+ $this->parentMenu->redraw();`
	`66`	`+ return new InputResult($originalValue);`
`62`	`67`	`case InputCharacter::ENTER:`
`63`	`68`	`if ($input->validate($inputValue)) {`
`64`	`69`	`$this->parentMenu->redraw();`

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