1 files changed, 17 insertions, 0 deletions
diff --git a/third_party/rust/regex/examples/shootout-regex-dna-replace.rs b/third_party/rust/regex/examples/shootout-regex-dna-replace.rs
new file mode 100644
index 0000000000..20694e06f3
--- /dev/null
+++ b/third_party/rust/regex/examples/shootout-regex-dna-replace.rs
@@ -0,0 +1,17 @@
+use std::io::{self, Read};
+
+macro_rules! regex {
+    ($re:expr) => {{
+        use regex::internal::ExecBuilder;
+        ExecBuilder::new($re).build().unwrap().into_regex()
+    }};
+}
+
+fn main() {
+    let mut seq = String::with_capacity(50 * (1 << 20));
+    io::stdin().read_to_string(&mut seq).unwrap();
+    let ilen = seq.len();
+
+    seq = regex!(">[^\n]*\n|\n").replace_all(&seq, "").into_owned();
+    println!("original: {}, replaced: {}", ilen, seq.len());
+}