home/zsh: export pwd using osc7

home/zsh.nix

@@ -92,6 +92,18 @@
         ls;
       }
 
+      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
+
       eval "$(direnv hook zsh)"
       zstyle ':completion:*' matcher-list 'm:{a-z}={A-Za-z}'