Use multiline string literals in examples of MessageContext.add_messages.

Author: stasm

examples/external_arguments.rs

@@ -7,9 +7,13 @@ use std::collections::HashMap;
 fn main() {
     let mut ctx = MessageContext::new(&["x-testing"]);
 
-    ctx.add_messages("hello-world = Hello { $name }");
-    ctx.add_messages("ref = The previous message says { hello-world }");
-    ctx.add_messages("unread-emails = You have { $emailCount } unread emails");
+    ctx.add_messages(
+        "
+hello-world = Hello { $name }
+ref = The previous message says { hello-world }
+unread-emails = You have { $emailCount } unread emails
+",
+    );
 
     let mut args = HashMap::new();
     args.insert("name", FluentValue::from("John"));

examples/message_reference.rs

@@ -5,9 +5,13 @@ use fluent::context::MessageContext;
 fn main() {
     let mut ctx = MessageContext::new(&["x-testing"]);
 
-    ctx.add_messages("foo = Foo");
-    ctx.add_messages("foobar = { foo } Bar");
-    ctx.add_messages("bazbar = { baz } Bar");
+    ctx.add_messages(
+        "
+foo = Foo
+foobar = { foo } Bar
+bazbar = { baz } Bar
+",
+    );
 
     match ctx.get_message("foobar")
         .and_then(|msg| ctx.format(msg, None))

examples/simple.rs

@@ -5,8 +5,12 @@ use fluent::context::MessageContext;
 fn main() {
     let mut ctx = MessageContext::new(&["x-testing"]);
 
-    ctx.add_messages("key1 = Value 1");
-    ctx.add_messages("key2 = Value 2");
+    ctx.add_messages(
+        "
+key1 = Value 1
+key2 = Value 2
+",
+    );
 
     match ctx.get_message("key1")
         .and_then(|msg| ctx.format(msg, None))