Big renaming:

start ---> head
  end   ---> tail
Much frustration with sed syntax. Need to learn perl some day.

doc/AsciiQuickReference.txt

@@ -41,8 +41,8 @@ A.setIdentity();  // Fill A with the identity.
 // Eigen                           // Matlab
 x.start(n)                         // x(1:n)
 x.start<n>()                       // x(1:n)
-x.end(n)                           // N = rows(x); x(N - n: N)
-x.end<n>()                         // N = rows(x); x(N - n: N)
+x.tail(n)                           // N = rows(x); x(N - n: N)
+x.tail<n>()                         // N = rows(x); x(N - n: N)
 x.segment(i, n)                    // x(i+1 : i+n)
 x.segment<n>(i)                    // x(i+1 : i+n)
 P.block(i, j, rows, cols)          // P(i+1 : i+rows, j+1 : j+cols)

doc/C01_QuickStartGuide.dox

@@ -493,7 +493,7 @@ Read-write access to sub-vectors:
 <td></td>
 
 <tr><td>\code vec1.start(n)\endcode</td><td>\code vec1.start<n>()\endcode</td><td>the first \c n coeffs </td></tr>
-<tr><td>\code vec1.end(n)\endcode</td><td>\code vec1.end<n>()\endcode</td><td>the last \c n coeffs </td></tr>
+<tr><td>\code vec1.tail(n)\endcode</td><td>\code vec1.tail<n>()\endcode</td><td>the last \c n coeffs </td></tr>
 <tr><td>\code vec1.segment(pos,n)\endcode</td><td>\code vec1.segment<n>(pos)\endcode</td>
     <td>the \c size coeffs in \n the range [\c pos : \c pos + \c n [</td></tr>
 <tr style="border-style: dashed none dashed none;"><td>

doc/echelon.cpp

@@ -27,8 +27,8 @@ struct unroll_echelon
     m.row(k).swap(m.row(k+rowOfBiggest));
     m.col(k).swap(m.col(k+colOfBiggest));
     m.template corner<CornerRows-1, CornerCols>(BottomRight)
-      -= m.col(k).template end<CornerRows-1>()
-       * (m.row(k).template end<CornerCols>() / m(k,k));
+      -= m.col(k).template tail<CornerRows-1>()
+       * (m.row(k).template tail<CornerCols>() / m(k,k));
   }
 };
 
@@ -59,7 +59,7 @@ struct unroll_echelon<Derived, Dynamic>
       m.row(k).swap(m.row(k+rowOfBiggest));
       m.col(k).swap(m.col(k+colOfBiggest));
       m.corner(BottomRight, cornerRows-1, cornerCols)
-        -= m.col(k).end(cornerRows-1) * (m.row(k).end(cornerCols) / m(k,k));
+        -= m.col(k).tail(cornerRows-1) * (m.row(k).tail(cornerCols) / m(k,k));
     }
   }
 };

doc/snippets/MatrixBase_end_int.cpp

@@ -1,5 +1,5 @@
 RowVector4i v = RowVector4i::Random();
 cout << "Here is the vector v:" << endl << v << endl;
-cout << "Here is v.end(2):" << endl << v.end(2) << endl;
-v.end(2).setZero();
+cout << "Here is v.tail(2):" << endl << v.tail(2) << endl;
+v.tail(2).setZero();
 cout << "Now the vector v is:" << endl << v << endl;

doc/snippets/MatrixBase_start_int.cpp

@@ -1,5 +1,5 @@
 RowVector4i v = RowVector4i::Random();
 cout << "Here is the vector v:" << endl << v << endl;
-cout << "Here is v.start(2):" << endl << v.start(2) << endl;
-v.start(2).setZero();
+cout << "Here is v.head(2):" << endl << v.head(2) << endl;
+v.head(2).setZero();
 cout << "Now the vector v is:" << endl << v << endl;

doc/snippets/MatrixBase_template_int_end.cpp

@@ -1,5 +1,5 @@
 RowVector4i v = RowVector4i::Random();
 cout << "Here is the vector v:" << endl << v << endl;
-cout << "Here is v.end(2):" << endl << v.end<2>() << endl;
-v.end<2>().setZero();
+cout << "Here is v.tail(2):" << endl << v.tail<2>() << endl;
+v.tail<2>().setZero();
 cout << "Now the vector v is:" << endl << v << endl;

doc/snippets/MatrixBase_template_int_start.cpp

@@ -1,5 +1,5 @@
 RowVector4i v = RowVector4i::Random();
 cout << "Here is the vector v:" << endl << v << endl;
-cout << "Here is v.start(2):" << endl << v.start<2>() << endl;
-v.start<2>().setZero();
+cout << "Here is v.head(2):" << endl << v.head<2>() << endl;
+v.head<2>().setZero();
 cout << "Now the vector v is:" << endl << v << endl;