fix: adding default value for exists in mf_existfunction

all.sas

@@ -160,21 +160,23 @@ options noquotelenmax;
   Full credit to [Bart](https://sasensei.com/user/305) for the vfunc pointer
   and the tidy approach for pure macro data set filtering.
   Check out his [SAS Packages](https://github.com/yabwon/SAS_PACKAGES)
-  framework!
+  framework!  Where you can find the same [function](
+https://github.com/yabwon/SAS_PACKAGES/blob/main/packages/baseplus.md#functionexists-macro
+  ).
 
   @param [in] name (positional) - function name
 
   @author Allan Bowe
 **/
 /** @cond */
-
 %macro mf_existfunction(name
 )/*/STORE SOURCE*/;
 
   %local dsid rc exist;
   %let dsid=%sysfunc(open(sashelp.vfunc(where=(fncname="%upcase(&name)"))));
-  %let exist = %sysfunc(fetch(&dsid, NOSET));
+  %let exist=1;
-  %let rc = %sysfunc(close(&dsid));
+  %let exist=%sysfunc(fetch(&dsid, NOSET));
+  %let rc=%sysfunc(close(&dsid));
 
   %sysevalf(0 = &exist)
 

base/mf_existfunction.sas

@@ -12,21 +12,23 @@
   Full credit to [Bart](https://sasensei.com/user/305) for the vfunc pointer
   and the tidy approach for pure macro data set filtering.
   Check out his [SAS Packages](https://github.com/yabwon/SAS_PACKAGES)
-  framework!
+  framework!  Where you can find the same [function](
+https://github.com/yabwon/SAS_PACKAGES/blob/main/packages/baseplus.md#functionexists-macro
+  ).
 
   @param [in] name (positional) - function name
 
   @author Allan Bowe
 **/
 /** @cond */
-
 %macro mf_existfunction(name
 )/*/STORE SOURCE*/;
 
   %local dsid rc exist;
   %let dsid=%sysfunc(open(sashelp.vfunc(where=(fncname="%upcase(&name)"))));
-  %let exist = %sysfunc(fetch(&dsid, NOSET));
+  %let exist=1;
-  %let rc = %sysfunc(close(&dsid));
+  %let exist=%sysfunc(fetch(&dsid, NOSET));
+  %let rc=%sysfunc(close(&dsid));
 
   %sysevalf(0 = &exist)