--- a/inst/@dataframe/isfield.m
+++ b/inst/@dataframe/isfield.m
@@ -58,7 +58,7 @@
     else
       for indi = (size (name, 1):-1:1)
         try
-          dummy = df_name2idx (df._name{2}, name(indi, :), \
+          dummy = df_name2idx (df._name{2}, name(indi, :), ...
                                df._cnt(2), 'column');
           resu(indi, 1) = ~isempty (dummy);
           for indj = (1:length (dummy))
@@ -79,7 +79,7 @@
     else
       for indi = (length (name):-1:1)
         try
-          dummy = df_name2idx (df._name{2}, name{indi}, \
+          dummy = df_name2idx (df._name{2}, name{indi}, ...
                                df._cnt(2), 'column');
           keyboard
           resu{indi, 1} = ~isempty (dummy); idx{indi, 1} = dummy;