From e3153e303940267b14f918482576e62ee6024e8c Mon Sep 17 00:00:00 2001
From: Ed Page <eopage@gmail.com>
Date: Thu, 4 Aug 2022 16:10:10 -0500
Subject: [PATCH] refactor: We don't need MultipleValues for bookkeeping
 afterall

TakesValue helps because it provides a way for a lot of settings to say
a value is needed without specifying how many.  Multiple values didn't
have enough call sites to make this worthwhile.

This is a part of #2688
---
 src/builder/arg.rs          | 26 +++++---------------------
 src/builder/arg_settings.rs |  3 ---
 2 files changed, 5 insertions(+), 24 deletions(-)

diff --git a/src/builder/arg.rs b/src/builder/arg.rs
index b74c9a1d6cd..86bcec039f8 100644
--- a/src/builder/arg.rs
+++ b/src/builder/arg.rs
@@ -874,16 +874,6 @@ impl<'help> Arg<'help> {
         self
     }
 
-    #[inline]
-    #[must_use]
-    fn multiple_values(self, yes: bool) -> Self {
-        if yes {
-            self.setting(ArgSettings::MultipleValues)
-        } else {
-            self.unset_setting(ArgSettings::MultipleValues)
-        }
-    }
-
     /// Specifies the number of arguments parsed per occurrence
     ///
     /// For example, if you had a `-f <file>` argument where you wanted exactly 3 'files' you would
@@ -1035,7 +1025,6 @@ impl<'help> Arg<'help> {
         let qty = qty.into();
         self.num_vals = Some(qty);
         self.takes_value(qty.takes_values())
-            .multiple_values(qty.is_multiple())
     }
 
     /// Placeholder for the argument's value in the help message / usage.
@@ -1461,11 +1450,9 @@ impl<'help> Arg<'help> {
     /// [`Arg::last(true)`]: Arg::last()
     #[inline]
     #[must_use]
-    pub fn raw(self, yes: bool) -> Self {
-        self.takes_value(yes)
-            .multiple_values(yes)
-            .allow_hyphen_values(yes)
-            .last(yes)
+    pub fn raw(mut self, yes: bool) -> Self {
+        self.num_vals.get_or_insert_with(|| (1..).into());
+        self.takes_value(yes).allow_hyphen_values(yes).last(yes)
     }
 
     /// Value for the argument when not present.
@@ -3791,7 +3778,7 @@ impl<'help> Arg<'help> {
     }
 
     pub(crate) fn is_multiple_values_set(&self) -> bool {
-        self.is_set(ArgSettings::MultipleValues)
+        self.get_num_args().unwrap_or_default().is_multiple()
     }
 
     pub(crate) fn is_takes_value_set(&self) -> bool {
@@ -3955,12 +3942,9 @@ impl<'help> Arg<'help> {
 
         let val_names_len = self.val_names.len();
         if val_names_len > 1 {
-            self.settings.set(ArgSettings::MultipleValues);
             self.num_vals.get_or_insert(val_names_len.into());
         } else {
-            if self.is_multiple_values_set() {
-                self.num_vals.get_or_insert((1..).into());
-            } else if self.is_takes_value_set() {
+            if self.is_takes_value_set() {
                 self.num_vals.get_or_insert(1.into());
             } else {
                 self.num_vals.get_or_insert(0.into());
diff --git a/src/builder/arg_settings.rs b/src/builder/arg_settings.rs
index a3d55a217ba..693b8b6db51 100644
--- a/src/builder/arg_settings.rs
+++ b/src/builder/arg_settings.rs
@@ -28,7 +28,6 @@ impl Default for ArgFlags {
 #[non_exhaustive]
 pub(crate) enum ArgSettings {
     Required,
-    MultipleValues,
     Global,
     Hidden,
     TakesValue,
@@ -66,7 +65,6 @@ bitflags! {
         const HIDE_ENV_VALS    = 1 << 17;
         const HIDDEN_SHORT_H   = 1 << 18;
         const HIDDEN_LONG_H    = 1 << 19;
-        const MULTIPLE_VALS    = 1 << 20;
         #[cfg(feature = "env")]
         const HIDE_ENV         = 1 << 21;
         const EXCLUSIVE        = 1 << 23;
@@ -76,7 +74,6 @@ bitflags! {
 
 impl_settings! { ArgSettings, ArgFlags,
     Required => Flags::REQUIRED,
-    MultipleValues => Flags::MULTIPLE_VALS,
     Global => Flags::GLOBAL,
     Hidden => Flags::HIDDEN,
     TakesValue => Flags::TAKES_VAL,