Redmine 2.5.1 issues show line number.

redmine_issues_show_linenumber.patch

--- app/views/issues/_list.html.erb.org	2014-03-30 01:56:38 +0900
+++ app/views/issues/_list.html.erb	2014-06-23 17:44:49 +0900
@@ -4,6 +4,9 @@
 <table class="list issues">
   <thead>
     <tr>
+      <th>
+        <%= raw("LN") %>
+      </th>
       <th class="checkbox hide-when-print">
         <%= link_to image_tag('toggle_check.png'), {},
                               :onclick => 'toggleIssuesSelection(this); return false;',
@@ -16,6 +19,9 @@
   </thead>
   <% previous_group = false %>
   <tbody>
+  <%
+    line_number = @offset + 1
+  %>
   <% issue_list(issues) do |issue, level| -%>
   <% if @query.grouped? && (group = @query.group_by_column.value(issue)) != previous_group %>
     <% reset_cycle %>
@@ -30,8 +36,12 @@
     <% previous_group = group %>
   <% end %>
   <tr id="issue-<%= issue.id %>" class="hascontextmenu <%= cycle('odd', 'even') %> <%= issue.css_classes %> <%= level > 0 ? "idnt idnt-#{level}" : nil %>">
+    <td><%= line_number %></td>
     <td class="checkbox hide-when-print"><%= check_box_tag("ids[]", issue.id, false, :id => nil) %></td>
     <%= raw query.inline_columns.map {|column| "<td class=\"#{column.css_classes}\">#{column_content(column, issue)}</td>"}.join %>
+    <%
+      line_number = line_number + 1
+    %>
   </tr>
   <% @query.block_columns.each do |column|
        if (text = column_content(column, issue)) && text.present? -%>