1 files changed, 19 insertions, 1 deletions

diff --git a/include/wordsplit.h b/include/wordsplit.h
index a175275..d7eb26f 100644
--- a/include/wordsplit.h
+++ b/include/wordsplit.h
@@ -75,6 +75,16 @@ struct wordsplit
   char **ws_envbuf;         /* Storage for variables */
   size_t ws_envidx;         /* Index of first free slot */
   size_t ws_envsiz;         /* Size of the ws_envbuf array */
+
+  char const **ws_paramv;   /* [WRDSO_PARAMV] User-supplied positional
+                               parameters */
+  size_t ws_paramc;         /* Number of positional parameters */
+
+        /* Temporary storage for parameters. Works similarly to ws_enbuf.
+         */
+  char **ws_parambuf;
+  size_t ws_paramidx;
+  size_t ws_paramsiz;
   
   int (*ws_getvar) (char **ret, const char *var, size_t len, void *clos);
                             /* [Input] (WRDSF_GETVAR, !WRDSF_NOVAR) Looks up
@@ -99,7 +109,7 @@ struct wordsplit
 
                                See ws_getvar for a discussion of possible
                                return values. */
-        
+
   const char *ws_input;     /* Input string (the S argument to wordsplit. */  
   size_t ws_len;            /* Length of ws_input. */
   size_t ws_endp;           /* Points past the last processed byte in
@@ -226,6 +236,12 @@ struct wordsplit
    $(echo foo bar) */
 #define WRDSO_NOCMDSPLIT     0x00002000
 
+/* Enable positional parameters */
+#define WRDSO_PARAMV         0x00004000
+/* Enable negative positional indices (${-1} is the last positional
+   parameter) */
+#define WRDSO_PARAM_NEGIDX   0x00008000
+
 #define WRDSO_BSKEEP          WRDSO_BSKEEP_WORD     
 #define WRDSO_OESC            WRDSO_OESC_WORD       
 #define WRDSO_XESC            WRDSO_XESC_WORD       
@@ -250,12 +266,14 @@ struct wordsplit
 #define WRDSE_PAREN      7
 #define WRDSE_GLOBERR    8
 #define WRDSE_USERERR    9
+#define WRDSE_BADPARAM  10
 
 int wordsplit (const char *s, wordsplit_t *ws, int flags);
 int wordsplit_len (const char *s, size_t len, wordsplit_t *ws, int flags);
 void wordsplit_free (wordsplit_t *ws);
 void wordsplit_free_words (wordsplit_t *ws);
 void wordsplit_free_envbuf (wordsplit_t *ws);
+void wordsplit_free_parambuf (struct wordsplit *ws);
 int wordsplit_get_words (wordsplit_t *ws, size_t *wordc, char ***wordv);
 
 static inline void wordsplit_getwords (wordsplit_t *ws, size_t *wordc, char ***wordv)