Add total bundler version trampolining via vendored postit

1 files changed, 7 insertions, 4 deletions

diff --git a/exe/bundle b/exe/bundle
index 0047906251..51a9035d97 100755
--- a/exe/bundle
+++ b/exe/bundle
@@ -4,6 +4,13 @@
 # Exit cleanly from an early interrupt
 Signal.trap("INT") { exit 1 }
 
+unless ENV["BUNDLE_DISABLE_POSTIT"]
+  update = "update".start_with?(ARGV.first || " ") && ARGV.find {|a| a.start_with?("--bundler") }
+  update &&= update =~ /--bundler(?:=(.+))?/ && $1 || "> 0.a"
+  ENV["BUNDLER_VERSION"] = update if update
+  require "bundler/postit_trampoline"
+end
+
 require "bundler"
 # Check if an older version of bundler is installed
 $LOAD_PATH.each do |path|
@@ -17,10 +24,6 @@ end
 
 require "bundler/friendly_errors"
 Bundler.with_friendly_errors do
-  if !"exec".start_with?(ARGV.first || " ") && postit = Gem.bin_path("postit", "postit")
-    Kernel.exec(postit, *ARGV)
-  end
-
   require "bundler/cli"
 
   # Allow any command to use --help flag to show help for that command