Configure zsh to emic OSC7 CWD updates to terminal

.config/zsh/functions/osc7-pwd.zsh

@@ -0,0 +1,12 @@
+function osc7-pwd() {
+    emulate -L zsh # also sets localoptions for us
+    setopt extendedglob
+    local LC_ALL=C
+    printf '\e]7;file://%s%s\e\' $HOST ${PWD//(#m)([^@-Za-z&-;_~])/%${(l:2::0:)$(([##16]#MATCH))}}
+}
+
+function chpwd-osc7-pwd() {
+    (( ZSH_SUBSHELL )) || osc7-pwd
+}
+add-zsh-hook -Uz chpwd chpwd-osc7-pwd
+