12310 Add demangle(1) command

@@ -9,11 +9,11 @@
  * http://www.illumos.org/license/CDDL.
  */
 
 /*
  * Copyright 2017 Jason King
- * Copyright 2018, Joyent, Inc.
+ * Copyright 2019 Joyent, Inc.
  */
 
 #ifndef _DEMANGLE_SYS_H
 #define _DEMANGLE_SYS_H
 

@@ -32,10 +32,11 @@
 typedef struct sysdem_alloc_s {
         void *(*alloc)(size_t);
         void (*free)(void *, size_t);
 } sysdem_ops_t;
 
+boolean_t sysdem_parse_lang(const char *, sysdem_lang_t *);
 char *sysdemangle(const char *, sysdem_lang_t, sysdem_ops_t *);
 
 #ifdef __cplusplus
 }
 #endif