Provide --yes alias for -y flag consistently

rustup-init.sh

@@ -44,7 +44,7 @@ Options:
           Set log level to 'DEBUG' if 'RUSTUP_LOG' is unset
   -q, --quiet
           Disable progress output, set log level to 'WARN' if 'RUSTUP_LOG' is unset
-  -y
+  -y, --yes
           Disable confirmation prompt
       --default-host <DEFAULT_HOST>
           Choose a default host tuple
@@ -134,6 +134,11 @@ main() {
             --quiet)
                 RUSTUP_QUIET=yes
                 ;;
+            --yes)
+                # user wants to skip the prompt --
+                # we don't need /dev/tty
+                need_tty=no
+                ;;
             *)
                 OPTIND=1
                 if [ "${arg%%--*}" = "" ]; then

src/cli/rustup_mode.rs

@@ -556,7 +556,7 @@ enum SelfSubcmd {
     /// Uninstall rustup
     Uninstall {
         /// Disable confirmation prompt
-        #[arg(short = 'y')]
+        #[arg(short = 'y', long = "yes")]
         no_prompt: bool,
 
         /// Do not clean up the `PATH` environment variable

src/cli/setup_mode.rs

@@ -36,7 +36,7 @@ struct RustupInit {
     quiet: bool,
 
     /// Disable confirmation prompt
-    #[arg(short = 'y')]
+    #[arg(short = 'y', long = "yes")]
     no_prompt: bool,
 
     /// Choose a default host tuple