gogs/templates/repo/diff/section_unified.tmpl

{{$file := .}}
{{$highlightClass := $file.HighlightClass}}
{{range $j, $section := $file.Sections}}
	{{range $k, $line := $section.Lines}}
		<tr class="{{DiffLineTypeToStr .Type}}-code nl-{{$k}} ol-{{$k}}">
			{{if eq .Type 4}}
				<td colspan="2" class="lines-num">
					{{/* {{if gt $j 0}}<span class="fold octicon octicon-fold"></span>{{end}} */}}
				</td>
			{{else}}
				<td class="lines-num lines-num-old" {{if $line.LeftLine}} id="diff-{{$file.OldIndex}}L{{$line.LeftLine}}" data-line-number="{{$line.LeftLine}}"{{end}}></td>
				<td class="lines-num lines-num-new" {{if $line.RightLine}} id="diff-{{$file.Index}}R{{$line.RightLine}}" data-line-number="{{$line.RightLine}}"{{end}}></td>
			{{end}}
			<td class="lines-code">
				<pre><code class="{{if $highlightClass}}language-{{$highlightClass}}{{else}}nohighlight{{end}}">{{$section.ComputedInlineDiffFor $line}}</code></pre>
			</td>
		</tr>
	{{end}}
{{end}}