Extract post_install_msg_unix_source_env!()

Author: rami3l

src/cli/self_update.rs

@@ -216,15 +216,9 @@ but will not be added automatically."
 }
 
 #[cfg(not(windows))]
-macro_rules! post_install_msg_unix {
+macro_rules! post_install_msg_unix_source_env {
     () => {
-        r#"# Rust is installed now. Great!
-
-To get started you may need to restart your current shell.
-This would reload your `PATH` environment variable to include
-Cargo's bin directory ({cargo_home}/bin).
-
-To configure your current shell, you need to source
+        r#"To configure your current shell, you need to source
 the corresponding `env` file under {cargo_home}.
 
 This is usually done by running one of the following:
@@ -235,6 +229,22 @@ This is usually done by running one of the following:
     };
 }
 
+#[cfg(not(windows))]
+macro_rules! post_install_msg_unix {
+    () => {
+        concat!(
+            r"# Rust is installed now. Great!
+
+To get started you may need to restart your current shell.
+This would reload your `PATH` environment variable to include
+Cargo's bin directory ({cargo_home}/bin).
+
+",
+            post_install_msg_unix_source_env!(),
+        )
+    };
+}
+
 #[cfg(windows)]
 macro_rules! post_install_msg_win {
     () => {
@@ -251,19 +261,15 @@ Cargo's bin directory ({cargo_home}\\bin).
 #[cfg(not(windows))]
 macro_rules! post_install_msg_unix_no_modify_path {
     () => {
-        r#"# Rust is installed now. Great!
+        concat!(
+            r"# Rust is installed now. Great!
 
 To get started you need Cargo's bin directory ({cargo_home}/bin) in your `PATH`
 environment variable. This has not been done automatically.
 
-To configure your current shell, you need to source
-the corresponding `env` file under {cargo_home}.
-
-This is usually done by running one of the following:
-    source "{cargo_home}/env"        # For bash/zsh
-    . "{cargo_home}/env"             # For ash/dash/pdksh (note the leading DOT)
-    source "{cargo_home}/env.fish"   # For fish
-"#
+",
+            post_install_msg_unix_source_env!(),
+        )
     };
 }