venv: Suppress warning message when bash hashing is disabled. (GH-17966)

d-goldin · vsajip · commit 4b0d91aab4cf · 2020-01-14T20:47:59.000Z
When using python's built-in venv activaton script warnings are printed when hashing is disabled in bash or zsh, like; `bash: hash: hashing disabled` This output is not really useful to the end-user and has been disabled in `virtualenv` for long. This commit is based on: pypa/virtualenv@28e85bc
diff --git a/Lib/venv/scripts/common/activate b/Lib/venv/scripts/common/activate
@@ -18,7 +18,7 @@ deactivate () {
     # be called to get it to forget past commands.  Without forgetting
     # past commands the $PATH changes we made may not be respected
     if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
-        hash -r
+        hash -r 2> /dev/null
     fi
 
     if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
@@ -62,5 +62,5 @@ fi
 # be called to get it to forget past commands.  Without forgetting
 # past commands the $PATH changes we made may not be respected
 if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
-    hash -r
+    hash -r 2> /dev/null
 fi
