bottle: extract method for enumerating files that match a string

This brings a (small) performance improvement as we yield the files as
they are output by fgrep rather than waiting until fgrep is done to do
any work.

Library/Homebrew/cmd/bottle.rb

@@ -42,33 +42,17 @@ module Homebrew extend self
     include Utils::Inreplace
   end
 
-  def uniq_by_ino(list)
-    h = {}
-    list.each do |e|
-      ino = e.stat.ino
-      h[ino] = e unless h.key? ino
-    end
-    h.values
-  end
-
   def keg_contains string, keg
     if not ARGV.homebrew_developer?
       return quiet_system 'fgrep', '--recursive', '--quiet', '--max-count=1', string, keg
     end
 
-    # Find all files that still reference the keg via a string search
-    keg_ref_files = `/usr/bin/fgrep --files-with-matches --recursive "#{string}" "#{keg}" 2>/dev/null`.split("\n")
-    keg_ref_files.map! { |file| Pathname.new(file) }.reject!(&:symlink?)
+    result = false
+    index = 0
 
-    # If files are hardlinked, only check one of them
-    keg_ref_files = uniq_by_ino(keg_ref_files)
+    keg.each_unique_file_matching(string) do |file|
+      opoo "String '#{string}' still exists in these files:" if index.zero?
 
-    # If there are no files with that string found, return immediately
-    return false if keg_ref_files.empty?
-
-    # Start printing out each file and any extra information we can find
-    opoo "String '#{string}' still exists in these files:"
-    keg_ref_files.each do |file|
       puts "#{Tty.red}#{file}#{Tty.reset}"
 
       # Check dynamic library linkage. Importantly, do not run otool on static
@@ -97,9 +81,12 @@ module Homebrew extend self
           puts " #{Tty.gray}-->#{Tty.reset} match '#{match}' at offset #{Tty.em}0x#{offset}#{Tty.reset}"
         end
       end
+
+      index += 1
+      result = true
     end
-    puts
-    true
+
+    result
   end
 
   def bottle_output bottle
@@ -162,6 +149,7 @@ module Homebrew extend self
 
         relocatable = !keg_contains(prefix_check, keg)
         relocatable = !keg_contains(HOMEBREW_CELLAR, keg) && relocatable
+        puts unless relocatable
       rescue Interrupt
         ignore_interrupts { bottle_path.unlink if bottle_path.exist? }
         raise

Library/Homebrew/keg_fix_install_names.rb

@@ -78,6 +78,18 @@ class Keg
     results.to_a
   end
 
+  def each_unique_file_matching string
+    IO.popen("/usr/bin/fgrep -lr '#{string}' '#{self}' 2>/dev/null") do |io|
+      hardlinks = Set.new
+
+      until io.eof?
+        file = Pathname.new(io.readline.chomp)
+        next if file.symlink?
+        yield file if hardlinks.add? file.stat.ino
+      end
+    end
+  end
+
   private
 
   def install_name_tool(*args)