From 9804d86786189251982825ea536f55658aaa3a0e Mon Sep 17 00:00:00 2001
From: zPlus <zplus@peers.community>
Date: Fri, 5 Aug 2022 07:23:23 +0200
Subject: [PATCH] Fix Log diffstats when commit has no parents.

Do not display diffstats in the Log page for commit with no parents
(first commit).
---
 templates/repository/log.html | 8 ++++++--
 web.py                        | 4 +++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/templates/repository/log.html b/templates/repository/log.html
index 696fe32..2ddb8f8 100644
--- a/templates/repository/log.html
+++ b/templates/repository/log.html
@@ -72,10 +72,14 @@
                         {{ commit_time(commit.commit_time, commit.commit_time_offset)|ago }}
                     </td>
                     <td class="files">
-                        {{ diff[commit.short_id].stats.files_changed }}
+                        {% if commit.short_id in diff %}
+                            {{ diff[commit.short_id].stats.files_changed }}
+                        {% endif %}
                     </td>
                     <td class="lines">
-                        <span class="deletions">-{{ diff[commit.short_id].stats.deletions }}</span>/<span class="insertions">+{{ diff[commit.short_id].stats.insertions }}</span>
+                        {% if commit.short_id in diff %}
+                            <span class="deletions">-{{ diff[commit.short_id].stats.deletions }}</span>/<span class="insertions">+{{ diff[commit.short_id].stats.insertions }}</span>
+                        {% endif %}
                     </td>
                 </tr>
             {% endfor %}
diff --git a/web.py b/web.py
index b1331f9..4386480 100644
--- a/web.py
+++ b/web.py
@@ -505,7 +505,9 @@ def log(repository, revision):
             break
         
         commits.append(commit)
-        diff[commit.short_id] = commit.parents[0].tree.diff_to_tree(commit.tree)
+        
+        if len(commit.parents) > 0:
+            diff[commit.short_id] = commit.parents[0].tree.diff_to_tree(commit.tree)
     
     return template(
         'repository/log.html',