From 6fdd2f9d693aaf1118fc61bd362273950703f43d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C4=99drzej?= <nabijaczleweli@gmail.com>
Date: Wed, 28 Dec 2016 03:07:59 +0100
Subject: [PATCH] feat(no_cargo): add no_cargo feature to disable
 Cargo-env-var-dependent macros (#786)

---
 Cargo.toml     | 1 +
 src/app/mod.rs | 4 ++--
 src/macros.rs  | 2 ++
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 812cfd4e4f8..d1176b24249 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -39,6 +39,7 @@ unstable    = [] # for building with unstable clap features (doesn't require nig
 nightly     = [] # for building with unstable Rust features (currently none)
 lints       = ["clippy"] # Requires nightly Rust
 debug       = [] # Enables debug messages
+no_cargo    = [] # Enable if you're not using Cargo, disables Cargo-env-var-dependent macros
 
 [profile.release]
 opt-level = 3
diff --git a/src/app/mod.rs b/src/app/mod.rs
index b3139e03503..7690133a239 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -104,8 +104,8 @@ impl<'a, 'b> App<'a, 'b> {
     #[deprecated(since="2.14.1", note="Can never work; use explicit App::author() and App::version() calls instead")]
     pub fn with_defaults<S: Into<String>>(n: S) -> Self {
         let mut a = App { p: Parser::with_name(n.into()) };
-        a.p.meta.author = Some(crate_authors!());
-        a.p.meta.version = Some(crate_version!());
+        a.p.meta.author = Some("Kevin K. <kbknapp@gmail.com>");
+        a.p.meta.version = Some("2.19.2");
         a
     }
 
diff --git a/src/macros.rs b/src/macros.rs
index 62fabf68156..d734bade05a 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -385,6 +385,7 @@ macro_rules! arg_enum {
 ///                 .get_matches();
 /// # }
 /// ```
+#[cfg(not(feature="no_cargo"))]
 #[macro_export]
 macro_rules! crate_version {
     () => {
@@ -413,6 +414,7 @@ macro_rules! crate_version {
 ///             .get_matches();
 /// # }
 /// ```
+#[cfg(not(feature="no_cargo"))]
 #[macro_export]
 macro_rules! crate_authors {
     ($sep:expr) => {{