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https://issues.apache.org/jira/browse/TEXT-118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16479579#comment-16479579
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Pascal Schumacher commented on TEXT-118:
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Pull request welcome! :-)
> JSON escaping incorrect for the delete control character
> --------------------------------------------------------
>
> Key: TEXT-118
> URL: https://issues.apache.org/jira/browse/TEXT-118
> Project: Commons Text
> Issue Type: Bug
> Affects Versions: 1.2
> Environment: JDK8u162, Mac OS X 13.something.
> Reporter: Dan Wallach
> Priority: Minor
>
> Here's a simple unit test. The assertion about backspace succeeds. The
> assertion about the delete character fails. Instead, the delete character
> shows up in the escaped text. This violates the JSON spec, which forbids
> "control characters" in strings.
> {code:java}
> @Test
> public void testDeleteCharacter() {
> String backspaceString = "Backspace: \b";
> String deleteString = "Delete: \u007F";
> assertEquals("Backspace: \\b",
> StringEscapeUtils.escapeJson(backspaceString));
> assertEquals("Delete: \\u007F", StringEscapeUtils.escapeJson(deleteString));
> }
> {code}
>
> The JSON spec doesn't have a specific escape for a delete character, but it
> does explicitly exclude control characters from passing through. I'd
> recommend behavior as in the above unit test.
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