Merge pull request #1344 from SlIdE42/patch-1

quitcd script for Elvish shell > 0.17.0

misc/quitcd/quitcd.elv

@@ -0,0 +1,39 @@
+# Append this file to ~/.elvish/rc.elv (Elvish > 0.17.0)
+
+use path
+
+fn n {|@a|
+	# Block nesting of nnn in subshells
+	if (has-env NNNLVL) {
+		try {
+			if (>= $E:NNNLVL 1) {
+				echo "nnn is already running"
+				return
+			}
+		} catch e {
+			nop
+		}
+	}
+
+	# The behaviour is set to cd on quit (nnn checks if NNN_TMPFILE is set)
+  # If NNN_TMPFILE is set to a custom path, it must be exported for nnn to
+  # see.
+  if (has-env XDG_CONFIG_HOME) {
+		set-env NNN_TMPFILE $E:XDG_CONFIG_HOME/nnn/.lastd
+	} else {
+		set-env NNN_TMPFILE $E:HOME/.config/nnn/.lastd
+	}
+
+	# Unmask ^Q (, ^V etc.) (if required, see `stty -a`) to Quit nnn
+  # stty start undef
+  # stty stop undef
+  # stty lwrap undef
+  # stty lnext undef
+
+	e:nnn $@a
+
+	if (path:is-regular $E:NNN_TMPFILE) {
+		eval (slurp < $E:NNN_TMPFILE)
+		rm $E:NNN_TMPFILE
+	}
+}