From dec191e8365184bf1f434bc668025421d5cabdc4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zolt=C3=A1n=20Reegn?= <zoltan.reegn@gmail.com>
Date: Tue, 11 Apr 2023 10:27:41 +0200
Subject: [PATCH] Fix zsh shell hook performance issue

The precmd hook is causing a significant overhead on every command
executed in the shell.
The shell hook does not need to be this strict however, it can also
run only on directory changes, ensuring that the shell remains snappy
while executing commands.

Also contains a similar fix for fish.

Fixes #259.
---
 bin/pyenv-virtualenv-init | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/bin/pyenv-virtualenv-init b/bin/pyenv-virtualenv-init
index e12769a..f5207a7 100755
--- a/bin/pyenv-virtualenv-init
+++ b/bin/pyenv-virtualenv-init
@@ -104,7 +104,7 @@ esac
 case "$shell" in
 fish )
   cat <<EOS
-function _pyenv_virtualenv_hook --on-event fish_prompt;
+function _pyenv_virtualenv_hook --on-variable PWD;
   set -l ret \$status
   if [ -n "\$VIRTUAL_ENV" ]
     pyenv activate --quiet; or pyenv deactivate --quiet; or true
@@ -149,9 +149,9 @@ EOS
     ;;
   zsh )
     cat <<EOS
-typeset -g -a precmd_functions
-if [[ -z \$precmd_functions[(r)_pyenv_virtualenv_hook] ]]; then
-  precmd_functions=(_pyenv_virtualenv_hook \$precmd_functions);
+typeset -g -a precwd_functions
+if [[ -z \$precwd_functions[(r)_pyenv_virtualenv_hook] ]]; then
+  precwd_functions=(_pyenv_virtualenv_hook \$precwd_functions);
 fi
 EOS
     ;;