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-rw-r--r--crawl-ref/source/format.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/crawl-ref/source/format.h b/crawl-ref/source/format.h
index af0231e23b..8391c2cbb8 100644
--- a/crawl-ref/source/format.h
+++ b/crawl-ref/source/format.h
@@ -35,6 +35,8 @@ public:
void clear();
+ void swap(formatted_string& other);
+
std::string::size_type length() const;
const formatted_string &operator += (const formatted_string &other);