Make inreplace errors fatal

Closes Homebrew/homebrew#32649.
Closes Homebrew/homebrew#32703.

Library/Homebrew/extend/string.rb

@@ -56,10 +56,16 @@ end
 
 # used by the inreplace function (in utils.rb)
 module StringInreplaceExtension
+  attr_accessor :errors
+
+  def self.extended(str)
+    str.errors = []
+  end
+
   def sub! before, after
     result = super
     unless result
-      opoo "inreplace: replacement of '#{before}' with '#{after}' failed"
+      errors << "expected replacement of #{before.inspect} with #{after.inspect}"
     end
     result
   end
@@ -68,7 +74,7 @@ module StringInreplaceExtension
   def gsub! before, after, audit_result=true
     result = super(before, after)
     if audit_result && result.nil?
-      opoo "inreplace: replacement of '#{before}' with '#{after}' failed"
+      errors << "expected replacement of #{before.inspect} with #{after.inspect}"
     end
     result
   end
@@ -76,9 +82,8 @@ module StringInreplaceExtension
   # Looks for Makefile style variable defintions and replaces the
   # value with "new_value", or removes the definition entirely.
   def change_make_var! flag, new_value
-    new_value = "#{flag}=#{new_value}"
-    unless gsub!(/^#{Regexp.escape(flag)}[ \t]*=[ \t]*(.*)$/, new_value, false)
-      opoo "inreplace: changing '#{flag}' to '#{new_value}' failed"
+    unless gsub!(/^#{Regexp.escape(flag)}[ \t]*=[ \t]*(.*)$/, "#{flag}=#{new_value}", false)
+      errors << "expected to change #{flag.inspect} to #{new_value.inspect}"
     end
   end
 
@@ -87,7 +92,7 @@ module StringInreplaceExtension
     Array(flags).each do |flag|
       # Also remove trailing \n, if present.
       unless gsub!(/^#{Regexp.escape(flag)}[ \t]*=.*$\n?/, "", false)
-        opoo "inreplace: removing '#{flag}' failed"
+        errors << "expected to remove #{flag.inspect}"
       end
     end
   end

Library/Homebrew/test/test_inreplace.rb

@@ -1,5 +1,6 @@
-require 'testing_env'
-require 'extend/string'
+require "testing_env"
+require "extend/string"
+require "utils/inreplace"
 
 class InreplaceTest < Homebrew::TestCase
   def test_change_make_var
@@ -87,4 +88,27 @@ class InreplaceTest < Homebrew::TestCase
     s.gsub!("o", "e")
     assert_equal "bee", s
   end
+
+  def test_inreplace_errors
+    extend(Utils::Inreplace)
+
+    open("test", "w") { |f| f.write "a\nb\nc\n" }
+
+    assert_raises(Utils::InreplaceError) {
+      inreplace "test", "d", "f"
+    }
+
+    assert_raises(Utils::InreplaceError) {
+      inreplace("test") { |s| s.gsub! "d", "f" }
+    }
+
+    assert_raises(Utils::InreplaceError) {
+      inreplace("test") { |s|
+        s.change_make_var! "VAR", "value"
+        s.remove_make_var! "VAR2"
+      }
+    }
+  ensure
+    File.unlink("test")
+  end
 end

Library/Homebrew/utils/inreplace.rb

@@ -1,24 +1,32 @@
 module Utils
+  class InreplaceError < RuntimeError
+    def initialize(errors)
+      super errors.inject("inreplace failed\n") { |s, (path, errs)|
+        s << "#{path}:\n" << errs.map { |e| "  #{e}\n" }.join
+      }
+    end
+  end
+
   module Inreplace
     def inreplace paths, before=nil, after=nil
+      errors = {}
+
       Array(paths).each do |path|
-        s = File.open(path, "rb", &:read)
+        s = File.open(path, "rb", &:read).extend(StringInreplaceExtension)
 
         if before.nil? && after.nil?
-          yield s.extend(StringInreplaceExtension)
+          yield s
         else
           after = after.to_s if Symbol === after
-          unless s.gsub!(before, after)
-            message = <<-EOS.undent
-              inreplace in '#{path}' failed
-              Expected replacement of '#{before}' with '#{after}'
-            EOS
-            ARGV.homebrew_developer? ? odie(message) : opoo(message)
-          end
+          s.gsub!(before, after)
         end
 
+        errors[path] = s.errors if s.errors.any?
+
         Pathname(path).atomic_write(s)
       end
+
+      raise InreplaceError.new(errors) if errors.any?
     end
     module_function :inreplace
   end