From ec6355e5b0739af55c7abb617325028545fb2d33 Mon Sep 17 00:00:00 2001 From: Homu Date: Tue, 20 Sep 2016 14:42:08 +0900 Subject: [PATCH] Auto merge of #4968 - bundler:seg-exec-load-docs, r=indirect Update bundle-exec docs for exec loading See https://github.com/bundler/bundler/issues/4852 @indirect --- man/bundle-exec.ronn | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/man/bundle-exec.ronn b/man/bundle-exec.ronn index ba6844c5c25..c9ab2309e4a 100644 --- a/man/bundle-exec.ronn +++ b/man/bundle-exec.ronn @@ -63,6 +63,15 @@ It also modifies Rubygems: making system executables work * Add all gems in the bundle into Gem.loaded_specs +### Loading + +By default, when attempting to `bundle exec` to a file with a ruby shebang, +Bundler will `Kernel.load` that file instead of using `Kernel.exec`. For the +vast majority of cases, this is a performance improvement. In a rare few cases, +this could cause some subtle side-effects (such as dependence on the exact +contents of `$0` or `__FILE__`) and the optimization can be disabled by enabling +the `disable_exec_load` setting. + ### Shelling out Any Ruby code that opens a subshell (like `system`, backticks, or `%x{}`) will