From 42aa40faf14db2805cc67abceef8271150450b78 Mon Sep 17 00:00:00 2001
From: Guillaume Pinot <texitoi@texitoi.eu>
Date: Wed, 20 Nov 2019 15:03:07 +0100
Subject: [PATCH] Add an example of a negative flag (i.e. --no-verbose)

Question from https://github.com/TeXitoi/structopt/issues/280
---
 examples/negative_flag.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 examples/negative_flag.rs

diff --git a/examples/negative_flag.rs b/examples/negative_flag.rs
new file mode 100644
index 00000000..62b2932c
--- /dev/null
+++ b/examples/negative_flag.rs
@@ -0,0 +1,12 @@
+use structopt::StructOpt;
+
+#[derive(Debug, StructOpt)]
+struct Opt {
+    #[structopt(long = "no-verbose", parse(from_flag = std::ops::Not::not))]
+    verbose: bool,
+}
+
+fn main() {
+    let cmd = Opt::from_args();
+    println!("{:#?}", cmd);
+}