Add separator module

Makefile

@@ -21,6 +21,7 @@ COM =\
 	components/num_files\
 	components/ram\
 	components/run_command\
+	components/separator\
 	components/swap\
 	components/temperature\
 	components/uptime\

components/separator.c

@@ -0,0 +1,10 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+
+#include "../util.h"
+
+const char *
+separator(const char *separator)
+{
+    return separator;
+}

config.def.h

@@ -45,6 +45,7 @@ static const char unknown_str[] = "n/a";
  * ram_total           total memory size in GB         NULL
  * ram_used            used memory in GB               NULL
  * run_command         custom shell command            command (echo foo)
+ * separator           string to echo                  NULL
  * swap_free           free swap in GB                 NULL
  * swap_perc           swap usage in percent           NULL
  * swap_total          total swap size in GB           NULL

slstatus.h

@@ -56,6 +56,9 @@ const char *ram_used(void);
 /* run_command */
 const char *run_command(const char *cmd);
 
+/* separator */
+const char *separator(const char *separator);
+
 /* swap */
 const char *swap_free(void);
 const char *swap_perc(void);