<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - clang-format: missing options for templates formatting"
   href="https://llvm.org/bugs/show_bug.cgi?id=25148">25148</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang-format: missing options for templates formatting
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>3.7
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>new bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>j.l.k@gmx.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When writing templated C++ code, I've converged to the following style for
out-of-class member function definitions:

template< typename Mesh,
          typename MeshDependentData,
          typename DifferentialOperator,
          typename BoundaryConditions,
          typename RightHandSide,
          typename Matrix >
bool
Solver< Mesh, MeshDependentData, DifferentialOperator, BoundaryConditions,
RightHandSide, Matrix >::
preIterate( const RealType & time,
            const RealType & tau,
            const MeshType & mesh,
            DofVectorType & dofVector,
            MeshDependentDataType & mdd )
{
    ...
}

After reading the documentation for the style options [1], I don't see a way to
achieve exactly this result with clang-format. The closest I got with
"ColumnLimit: 0" is this:

template < typename Mesh, typename MeshDependentData, typename
DifferentialOperator, typename BoundaryConditions, typename RightHandSide,
typename Matrix >
bool
Solver< Mesh, MeshDependentData, DifferentialOperator, BoundaryConditions,
RightHandSide, Matrix >::preIterate( const RealType & time,
                                                                               
                                const RealType & tau,
                                                                               
                                const MeshType & mesh,
                                                                               
                                DofVectorType & dofVector,
                                                                               
                                MeshDependentDataType & mdd )
{
    ...
}

The missing options are:
1. Aligning template parameters on separate lines in template declarations and
possibly also member's class qualification. This should be the same as function
arguments list.
2. Breaking after :: if the member's class qualification is "sufficiently long"
(or always for consistency).

[1] <a href="http://clang.llvm.org/docs/ClangFormatStyleOptions.html">http://clang.llvm.org/docs/ClangFormatStyleOptions.html</a></pre>
        </div>
      </p>
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