--- a/libinterp/corefcn/ls-hdf5.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/corefcn/ls-hdf5.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -415,7 +415,7 @@
     }
   else if (info.type == H5G_DATASET && ident_valid)
     {
-      // For backwards compatiability.
+      // For backwards compatibility.
 #if HAVE_HDF5_18
       data_id = H5Dopen (group_id, name, H5P_DEFAULT);
 #else

--- a/libinterp/octave-value/ov-bool-mat.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/octave-value/ov-bool-mat.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -200,7 +200,7 @@
   else
     {
       // Keep this case, rather than use generic code above for backward
-      // compatiability. Makes load_ascii much more complex!!
+      // compatibility.  Makes load_ascii much more complex!!
       os << "# rows: " << rows () << "\n"
          << "# columns: " << columns () << "\n";
 

--- a/libinterp/octave-value/ov-cell.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/octave-value/ov-cell.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -786,7 +786,7 @@
   else
     {
       // Keep this case, rather than use generic code above for backward
-      // compatiability. Makes load_ascii much more complex!!
+      // compatibility.  Makes load_ascii much more complex!!
       os << "# rows: " << rows () << "\n"
          << "# columns: " << columns () << "\n";
 

--- a/libinterp/octave-value/ov-cx-mat.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/octave-value/ov-cx-mat.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -344,7 +344,7 @@
   else
     {
       // Keep this case, rather than use generic code above for backward
-      // compatiability. Makes load_ascii much more complex!!
+      // compatibility.  Makes load_ascii much more complex!!
       os << "# rows: " << rows () << "\n"
          << "# columns: " << columns () << "\n";
 

--- a/libinterp/octave-value/ov-flt-cx-mat.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/octave-value/ov-flt-cx-mat.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -318,7 +318,7 @@
   else
     {
       // Keep this case, rather than use generic code above for backward
-      // compatiability. Makes load_ascii much more complex!!
+      // compatibility.  Makes load_ascii much more complex!!
       os << "# rows: " << rows () << "\n"
          << "# columns: " << columns () << "\n";
 

--- a/libinterp/octave-value/ov-flt-re-mat.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/octave-value/ov-flt-re-mat.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -345,7 +345,7 @@
   else
     {
       // Keep this case, rather than use generic code above for backward
-      // compatiability. Makes load_ascii much more complex!!
+      // compatibility.  Makes load_ascii much more complex!!
       os << "# rows: " << rows () << "\n"
          << "# columns: " << columns () << "\n";
 

--- a/libinterp/octave-value/ov-re-mat.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/octave-value/ov-re-mat.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -447,7 +447,7 @@
   else
     {
       // Keep this case, rather than use generic code above for backward
-      // compatiability. Makes load_ascii much more complex!!
+      // compatibility.  Makes load_ascii much more complex!!
       os << "# rows: " << rows () << "\n"
          << "# columns: " << columns () << "\n";
 

--- a/libinterp/octave-value/ov-str-mat.cc	Mon Aug 17 09:24:07 2015 -0700
+++ b/libinterp/octave-value/ov-str-mat.cc	Mon Aug 17 09:32:20 2015 -0700
@@ -300,7 +300,7 @@
   else
     {
       // Keep this case, rather than use generic code above for
-      // backward compatiability. Makes load_ascii much more complex!!
+      // backward compatibility.  Makes load_ascii much more complex!!
       charMatrix chm = char_matrix_value ();
       octave_idx_type elements = chm.rows ();
       os << "# elements: " << elements << "\n";
@@ -442,7 +442,7 @@
 
           if (len >= 0)
             {
-              // This is cruft for backward compatiability,
+              // This is cruft for backward compatibility,
               // but relatively harmless.
 
               // Use this instead of a C-style character buffer so
@@ -697,7 +697,7 @@
     }
   else
     {
-      // This is cruft for backward compatiability and easy data
+      // This is cruft for backward compatibility and easy data
       // importation
       if (rank == 0) //FIXME: Does rank==0 even exist for strings in HDF5?
         {