diff --git a/build_linux64/libamsstring4.linux64.a b/build_linux64/libamsstring4.linux64.a
index 46a9418..b15a1f8 100644
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diff --git a/build_linux64/objstore/amsstring4_bintextencoding.o b/build_linux64/objstore/amsstring4_bintextencoding.o
index 20132cd..bdcb348 100644
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diff --git a/build_linux64/objstore/amsstring4_class.o b/build_linux64/objstore/amsstring4_class.o
index 2dc679c..ec8cff6 100644
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diff --git a/build_linux64/objstore/amsstring4_convenience1.o b/build_linux64/objstore/amsstring4_convenience1.o
index e093c1e..78cd721 100644
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diff --git a/build_linux64/objstore/amsstring4_portability.o b/build_linux64/objstore/amsstring4_portability.o
index ce4db38..c1d2df1 100644
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diff --git a/build_linux64/objstore/amsstring4_template.o b/build_linux64/objstore/amsstring4_template.o
index 03f1437..8a78b0a 100644
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diff --git a/build_linux64/objstore/amsstring4_tests1.o b/build_linux64/objstore/amsstring4_tests1.o
index 07cb23d..25f6787 100644
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diff --git a/build_linux64/objstore/amsstring4_unicode.o b/build_linux64/objstore/amsstring4_unicode.o
index 8102b28..6869d9e 100644
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diff --git a/build_linux64/tests b/build_linux64/tests
index 2095091..3f460be 100644
Binary files a/build_linux64/tests and b/build_linux64/tests differ
diff --git a/include/amsstring4/amsstring4_tests.hpp b/include/amsstring4/amsstring4_tests.hpp
index c26b76f..8d59b05 100644
--- a/include/amsstring4/amsstring4_tests.hpp
+++ b/include/amsstring4/amsstring4_tests.hpp
@@ -21,6 +21,7 @@ namespace ams
     
     void amsstring4_test_convenience1a();
     void amsstring4_test_convenience1b();
+    void amsstring4_test_convenience1c();
 
 };
 
diff --git a/src/amsstring4/amsstring4_convenience1.cpp b/src/amsstring4/amsstring4_convenience1.cpp
index f4ed842..66f7013 100644
--- a/src/amsstring4/amsstring4_convenience1.cpp
+++ b/src/amsstring4/amsstring4_convenience1.cpp
@@ -511,7 +511,10 @@ amsarray<amsstring> splitalphanum(const amsstring &s)
 
     if(mode==1 && (!amsstring_ischarnumeric(c) || I>=(s.length-1)))
     {
-      I1 = I;
+      if(I>=(s.length-1))
+        I1 = s.length;
+      else
+        I1 = I;
       s2 = s.substring(I0,I1);
       sa.append(s2);
       mode = 0;
@@ -787,14 +790,14 @@ void amsstring4_test_convenience1b()
   int I;
 
   s1 = "1e2e3,45, 6.7E8,-9.13E24 ";
-  sa = splitalphanum(s1);
+  sa = s1.splitalphanum();
   for(I=0;I<sa.length;I++)
   {
     printf("s[%d] = '%s'\n",I,sa[I].cstring);
   }
 
   s1 = "arandomtuple = (apples,1.2,pi);";
-  s2 = select_between(s1,"(",")");
+  s2 = s1.select_between("(",")");
   printf("s1='%s'\ns2='%s'\n",s1.cstring,s2.cstring);
 
   s1 = "arandomtuple = {apples,1.2,pi);";
@@ -822,7 +825,7 @@ void amsstring4_test_convenience1b()
   printf("s1='%s'\ns2='%s'\n",s1.cstring,s2.cstring);
 
   s1 = "kernellaunch<<<nblocks,nthreads>>>(apples,1.2,pi);";
-  s2 = select_between(s1,"",">>>");
+  s2 = s1.select_between("",">>>");
   printf("s1='%s'\ns2='%s'\n",s1.cstring,s2.cstring);
 
   sa.resize(0);
@@ -842,8 +845,21 @@ void amsstring4_test_convenience1b()
   stripnewlines(&sa);
   s1 = concat_lines(sa);
   printf("\nconcat_lines(sa) = '%s'\n----\n",s1.cstring);
+}
+
+void amsstring4_test_convenience1c()
+{
+  amsstring s1,s2;
+  amsarray<amsstring> sa;
+  int I;
+
+  s1 = "1.2,   1.3, 6.21E7, 1.1 ";
+  sa = s1.splitalphanum();
+  for(I=0;I<sa.length;I++)
+  {
+    printf("sa[%d]='%s'\n",I,sa[I].cstring);
+  }
 
-  
 }
 
 };//end namespace ams
diff --git a/src/main.cpp b/src/main.cpp
index 71837d7..b8998e1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -23,7 +23,8 @@ int main(int argc, char* argv[])
     // amsstring4_test_concatenation_operators(); 
 
     //amsstring4_test_convenience1a();
-    amsstring4_test_convenience1b();
+    //amsstring4_test_convenience1b();
+    amsstring4_test_convenience1c();
     
     return ret;
 }
\ No newline at end of file