sabi0 commented on code in PR #12973:
URL: https://github.com/apache/lucene/pull/12973#discussion_r1444504974
##########
lucene/queryparser/src/java/org/apache/lucene/queryparser/flexible/standard/parser/EscapeQuerySyntaxImpl.java:
##########
@@ -184,7 +186,7 @@ public CharSequence escape(CharSequence text, Locale
locale, Type type) {
* Returns a String where the escape char has been removed, or kept only
once if there was a
* double escape.
*
- * <p>Supports escaped unicode characters, e. g. translates <code>A</code>
to <code>A</code>.
+ * <p>Supports escaped Unicode characters, e.g. translates <code>A</code> to
<code>A</code>.
Review Comment:
Thank you for the link. I did not know about the `\uu...` either.
Unfortunately, javadoc seems to swallow all of those 'u's anyway:
```
<div class="block">Returns a String where the escape char has been removed,
or kept only once if there was a
double escape.
<p>Supports escaped Unicode characters, e.g. translates <code>A</code> to
<code>A</code>.</div>
```
The `{@code ...}` markup works the same:
```
<code>\u0041</code> => A
<code>\uu0041</code> => A
<code>\\u0041</code> => \\u0041
{@code \u0041} => A
{@code \uu0041} => A
{@code \\u0041} => \\u0041
```
JDK Javadoc uses Unicode escape for the backslash itself: `{@code
\u005Cu0800}`:
https://github.com/openjdk/jdk/blob/master/src/java.base/share/classes/java/io/DataInput.java#L116
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