Checkout outdatedness in `brew upgrade <formula>`

Fixes Homebrew/homebrew#35523.

1 files changed, 7 insertions, 8 deletions

diff --git a/Library/Homebrew/cmd/upgrade.rb b/Library/Homebrew/cmd/upgrade.rb
index ff7f43192..8b30ba59c 100644
--- a/Library/Homebrew/cmd/upgrade.rb
+++ b/Library/Homebrew/cmd/upgrade.rb
@@ -9,15 +9,14 @@ module Homebrew
       outdated = Homebrew.outdated_brews(Formula.installed)
       exit 0 if outdated.empty?
     else
-      outdated = ARGV.formulae.select do |f|
-        if f.installed?
-          onoe "#{f.name}-#{f.installed_version} already installed"
-          false
-        elsif not f.rack.directory? or f.rack.subdirs.empty?
-          onoe "#{f.name} not installed"
-          false
+      outdated = Homebrew.outdated_brews(ARGV.formulae)
+
+      (ARGV.formulae - outdated).each do |f|
+        if f.rack.directory?
+          version = f.rack.subdirs.map { |d| Keg.new(d).version }.max
+          onoe "#{f.name} #{version} already installed"
         else
-          true
+          onoe "#{f.name} not installed"
         end
       end
       exit 1 if outdated.empty?