update oh-my-zsh, poetry env and cs setting update

exact_dot_oh-my-zsh/exact_plugins/exact_knife_ssh/README.md

@@ -0,0 +1,14 @@
+# knife_ssh plugin
+
+This plugin adds a `knife_ssh` function as well as completion for it, to allow
+connecting via ssh to servers managed with [Chef](https://www.chef.io/).
+
+To use it, add `knife_ssh` to the plugins array in your zshrc file:
+```zsh
+plugins=(... knife_ssh)
+```
+
+The plugin creates a cache of the Chef node list via `knife`, and stores it
+in `$HOME/.knife_comp~`, when first triggering knife_ssh completion.
+
+**Requirements:** `knife` has to be installed.

exact_dot_oh-my-zsh/exact_plugins/exact_knife_ssh/knife_ssh.plugin.zsh

@@ -1,17 +1,17 @@
 function knife_ssh() {
-  grep -q $1 ~/.knife_comp~ 2> /dev/null || rm -f ~/.knife_comp~;
+  grep -q $1 ~/.knife_comp~ 2> /dev/null || rm -f ~/.knife_comp~
   ssh $(knife node show $1 | awk '/IP:/{print $2}')
 }
 
 _knife_ssh() {
   if hash knife 2>/dev/null; then
     if [[ ! -f ~/.knife_comp~ ]]; then
-      echo "\nGenerating ~/.knife_comp~..." >/dev/stderr
+      echo "\nGenerating ~/.knife_comp~..." >&2
       knife node list > ~/.knife_comp~
     fi
-    compadd $(<~/.knife_comp~)
+    compadd $(< ~/.knife_comp~)
   else
-    echo "Could not find knife" > /dev/stderr;
+    echo "Could not find knife" >&2
   fi
 }