[#absl-UrlUnescapePlus]
= xref:absl.adoc[absl]::UrlUnescapePlus
:relfileprefix: ../
:mrdocs:

Performs the inverse transformation of UrlEscapePlus()&period; It returns `std&colon;&colon;nullopt` if any % is not followed by two hexadecimal digits&period;

== Synopsis

Declared in `&lt;absl&sol;strings&sol;escaping&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
&lsqb;&lsqb;nodiscard&rsqb;&rsqb;
std::optional&lt;std::string&gt;
UrlUnescapePlus(std::string&lowbar;view input);
----

== Return Value

The unescaped string, or `std&colon;&colon;nullopt` on malformed input&period;

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *input*
| The percent&hyphen;encoded string to unescape&period;
|===


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