treewide: future-proof frozen_string_literal changes

Once again Ruby seems ready to introduce more incompatibilities
and force busywork upon maintainers[1].  In order to avoid
incompatibilities in the future, I used a Perl script[2] to
prepend `frozen_string_literal: false' to every Ruby file.

Somebody interested will have to go through every Ruby source
file and enable frozen_string_literal once they've thoroughly
verified it's safe to do so.

[1] https://bugs.ruby-lang.org/issues/20205
[2] https://yhbt.net/add-fsl.git/74d7689/s/?b=add-fsl.perl

16 files changed, 16 insertions, 0 deletions

diff --git a/t/broken-app.ru b/t/broken-app.ru
index d05d7ab..5966bff 100644
--- a/t/broken-app.ru
+++ b/t/broken-app.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # we do not want Rack::Lint or anything to protect us
 use Rack::ContentLength
 use Rack::ContentType, "text/plain"
diff --git a/t/client_body_buffer_size.ru b/t/client_body_buffer_size.ru
index 44161a5..1a0fb16 100644
--- a/t/client_body_buffer_size.ru
+++ b/t/client_body_buffer_size.ru
@@ -1,4 +1,5 @@
 #\ -E none
+# frozen_string_literal: false
 app = lambda do |env|
   input = env['rack.input']
   case env["PATH_INFO"]
diff --git a/t/detach.ru b/t/detach.ru
index bbd998e..8d35951 100644
--- a/t/detach.ru
+++ b/t/detach.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 use Rack::ContentType, "text/plain"
 fifo_path = ENV["TEST_FIFO"] or abort "TEST_FIFO not set"
 run lambda { |env|
diff --git a/t/env.ru b/t/env.ru
index 388412e..86c3cfa 100644
--- a/t/env.ru
+++ b/t/env.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 use Rack::ContentLength
 use Rack::ContentType, "text/plain"
 run lambda { |env| [ 200, {}, [ env.inspect << "\n" ] ] }
diff --git a/t/fails-rack-lint.ru b/t/fails-rack-lint.ru
index 82bfb5f..8b8b5ec 100644
--- a/t/fails-rack-lint.ru
+++ b/t/fails-rack-lint.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # This rack app returns an invalid status code, which will cause
 # Rack::Lint to throw an exception if it is present.  This
 # is used to check whether Rack::Lint is in the stack or not.
diff --git a/t/heartbeat-timeout.ru b/t/heartbeat-timeout.ru
index 3eeb5d6..ccc6a8e 100644
--- a/t/heartbeat-timeout.ru
+++ b/t/heartbeat-timeout.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 use Rack::ContentLength
 headers = { 'content-type' => 'text/plain' }
 run lambda { |env|
diff --git a/t/integration.ru b/t/integration.ru
index 888833a..6df481c 100644
--- a/t/integration.ru
+++ b/t/integration.ru
@@ -1,4 +1,5 @@
 #!ruby
+# frozen_string_literal: false
 # Copyright (C) unicorn hackers <unicorn-public@80x24.org>
 # License: GPL-3.0+ <https://www.gnu.org/licenses/gpl-3.0.txt>
 
diff --git a/t/listener_names.ru b/t/listener_names.ru
index edb4e6a..f52c59b 100644
--- a/t/listener_names.ru
+++ b/t/listener_names.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 use Rack::ContentLength
 use Rack::ContentType, "text/plain"
 names = Unicorn.listener_names.inspect # rely on preload_app=true
diff --git a/t/oob_gc.ru b/t/oob_gc.ru
index 224cb06..2ae58a8 100644
--- a/t/oob_gc.ru
+++ b/t/oob_gc.ru
@@ -1,4 +1,5 @@
 #\-E none
+# frozen_string_literal: false
 require 'unicorn/oob_gc'
 use Rack::ContentLength
 use Rack::ContentType, "text/plain"
diff --git a/t/oob_gc_path.ru b/t/oob_gc_path.ru
index 7f40601..5358222 100644
--- a/t/oob_gc_path.ru
+++ b/t/oob_gc_path.ru
@@ -1,4 +1,5 @@
 #\-E none
+# frozen_string_literal: false
 require 'unicorn/oob_gc'
 use Rack::ContentLength
 use Rack::ContentType, "text/plain"
diff --git a/t/pid.ru b/t/pid.ru
index f5fd31f..b49b137 100644
--- a/t/pid.ru
+++ b/t/pid.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 use Rack::ContentLength
 use Rack::ContentType, "text/plain"
 run lambda { |env| [ 200, {}, [ "#$$\n" ] ] }
diff --git a/t/preread_input.ru b/t/preread_input.ru
index 18af221..5f68fe9 100644
--- a/t/preread_input.ru
+++ b/t/preread_input.ru
@@ -1,4 +1,5 @@
 #\-E none
+# frozen_string_literal: false
 require 'digest/md5'
 require 'unicorn/preread_input'
 use Unicorn::PrereadInput
diff --git a/t/reopen-logs.ru b/t/reopen-logs.ru
index c39e8f6..488da85 100644
--- a/t/reopen-logs.ru
+++ b/t/reopen-logs.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 use Rack::ContentLength
 use Rack::ContentType, "text/plain"
 run lambda { |env|
diff --git a/t/t0013.ru b/t/t0013.ru
index 48a3a34..e425093 100644
--- a/t/t0013.ru
+++ b/t/t0013.ru
@@ -1,4 +1,5 @@
 #\ -E none
+# frozen_string_literal: false
 use Rack::ContentLength
 use Rack::ContentType, 'text/plain'
 app = lambda do |env|
diff --git a/t/t0014.ru b/t/t0014.ru
index b0bd2b7..686d214 100644
--- a/t/t0014.ru
+++ b/t/t0014.ru
@@ -1,4 +1,5 @@
 #\ -E none
+# frozen_string_literal: false
 use Rack::ContentLength
 use Rack::ContentType, 'text/plain'
 app = lambda do |env|
diff --git a/t/t0301.ru b/t/t0301.ru
index ce68213..54929b1 100644
--- a/t/t0301.ru
+++ b/t/t0301.ru
@@ -1,4 +1,5 @@
 #\-N --debug
+# frozen_string_literal: false
 run(lambda do |env|
   case env['PATH_INFO']
   when '/vars'