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-rw-r--r--tool/vcs.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/tool/vcs.rb b/tool/vcs.rb
index 0f20c6e35a..9d0a276937 100644
--- a/tool/vcs.rb
+++ b/tool/vcs.rb
@@ -1,6 +1,9 @@
# vcs
require 'fileutils'
+# This library is used by several other tools/ scripts to detect the current
+# VCS in use (e.g. SVN, Git) or to interact with that VCS.
+
ENV.delete('PWD')
unless File.respond_to? :realpath