fix syntax issues

doc/src/fix_vector.rst

@@ -193,6 +193,6 @@ Defaults
 """"""""
 
 The default value of *nmax* is deduced from the number of steps
-in a run (or multiple runs when using the *start* and *stop* 
+in a run (or multiple runs when using the *start* and *stop*
 keywords of the :doc:`run command <run>`) divided by the choice
 of *Nevery* plus 1.

src/fix_vector.cpp

@@ -57,9 +57,10 @@ FixVector::FixVector(LAMMPS *lmp, int narg, char **arg) :
     val.id = argi.get_name();
     val.val.c = nullptr;
 
-    if ((val.which == ArgInfo::UNKNOWN) || (val.which == ArgInfo::NONE) || (argi.get_dim() > 1))
+    if ((val.which == ArgInfo::UNKNOWN) || (argi.get_dim() > 1))
       error->all(FLERR, "Invalid fix vector argument: {}", arg[iarg]);
 
+    if (val.which == ArgInfo::NONE) break;
     values.push_back(val);
     ++iarg;
   }

src/fix_vector.h

@@ -50,10 +50,10 @@ class FixVector : public Fix {
 
   bigint nextstep, initialstep;
 
-  int ncount;       // # of values currently in growing vector or array
-  int ncountmax;    // max # of values vector/array can hold
-  int nmaxval;      // maximum allowed number of values
-  int nindex;       // start index of data, may wrap around
+  bigint ncount;       // # of values processed and stored into growing vector or array
+  bigint ncountmax;    // max # of values vector/array can hold
+  bigint nmaxval;      // maximum allowed number of values
+  bigint nindex;       // start index of data, may wrap around
 
   double *vector;
   double **array;