quitcd: make nnn env variable local

misc/quitcd/quitcd.nu

@@ -1,28 +1,26 @@
-export-env {
+# Run nnn with dynamic changing directory to the environment.
+export def --env n [
+	...flags : string # Extra flags to launch nnn with.
+] -> nothing {
+
 	let config_home = if ($env.XDG_CONFIG_HOME | is-empty) {
 		$'($env.HOME)/.config/'
 	} else {
 		$env.XDG_CONFIG_HOME
 	}
 
 	# The behaviour is set to cd on quit (nnn checks if NNN_TMPFILE is set).
-	$env.NNN_TMPFILE = ($config_home + '/nnn/.lastd')
-}
-
-# Run nnn with dynamic changing directory to the environment.
-export def --env n [
-	...flags : string # Extra flags to launch nnn with.
-] -> nothing {
+	let nnn_tmpfile = $config_home + '/nnn/.lastd'
 
 	# Launch nnn. Add desired flags after `^nnn`, ex: `^nnn -eda ($x | str join)`
-	^nnn ...$flags
+	NNN_TMPFILE=$nnn_tmpfile ^nnn ...$flags
 
-	if ($env.NNN_TMPFILE | path exists) {
+	if ($nnn_tmpfile | path exists) {
 		# Remove <cd '> from the first part of the string and the last single quote <'>.
 		# Fix post-processing of nnn with path, escaping single quotes with POSIX syntax.
-		let path = (open $env.NNN_TMPFILE | str substring 4..-1 | str replace `'\''` `'`)
+		let path = (open $nnn_tmpfile | str substring 4..-1 | str replace --all `'\''` `'`)
 
-		rm $env.NNN_TMPFILE
+		rm $nnn_tmpfile
 
 		cd $path
 	}