Fix for #6299: restore previous default shell with uninstall

tools/install.sh

@@ -85,6 +85,7 @@ main() {
   if [ "$TEST_CURRENT_SHELL" != "zsh" ]; then
     # If this platform provides a "chsh" command (not Cygwin), do it, man!
     if hash chsh >/dev/null 2>&1; then
+      echo $SHELL > ~/.default-shell.pre-oh-my-zsh
       printf "${BLUE}Time to change your default shell to zsh!${NORMAL}\n"
       chsh -s $(grep /zsh$ /etc/shells | tail -1)
     # Else, suggest the user do so manually.

tools/uninstall.sh

@@ -21,6 +21,12 @@ if [ -f ~/.zshrc.pre-oh-my-zsh ] || [ -h ~/.zshrc.pre-oh-my-zsh ]; then
 
   mv ~/.zshrc.pre-oh-my-zsh ~/.zshrc;
 
+  if [ -f ~/.default-shell.pre-oh-my-zsh ] && hash chsh >/dev/null 2>&1; then
+    previous=$(cat ~/.default-shell.pre-oh-my-zsh)
+    echo "Switching your shell back to $previous"
+    chsh -s $previous
+  fi
+
   echo "Your original zsh config was restored. Please restart your session."
 else
   if hash chsh >/dev/null 2>&1; then