From 1a8c024f6a66d3ea509cc40c3bde2b8b3e006ad0 Mon Sep 17 00:00:00 2001
From: li6in9muyou <libq5520@mails.jlu.edu.cn>
Date: Wed, 16 Jul 2025 22:12:02 +0800
Subject: [PATCH] feat(file-history): customize the max length of commit
 subject before truncating

---
 doc/diffview_defaults.txt                        | 1 +
 lua/diffview/config.lua                          | 1 +
 lua/diffview/scene/views/file_history/render.lua | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/diffview_defaults.txt b/doc/diffview_defaults.txt
index 1ff1f7db..5734e5fe 100644
--- a/doc/diffview_defaults.txt
+++ b/doc/diffview_defaults.txt
@@ -62,6 +62,7 @@ DEFAULT CONFIG                                  *diffview.defaults*
       },
     },
     file_history_panel = {
+      max_len_commit_subject = 72,
       log_options = {   -- See |diffview-config-log_options|
         git = {
           single_file = {
diff --git a/lua/diffview/config.lua b/lua/diffview/config.lua
index f1f6d0f1..16054e6d 100644
--- a/lua/diffview/config.lua
+++ b/lua/diffview/config.lua
@@ -83,6 +83,7 @@ M.defaults = {
     },
   },
   file_history_panel = {
+    max_len_commit_subject = 72,
     log_options = {
       ---@type ConfigLogOptions
       git = {
diff --git a/lua/diffview/scene/views/file_history/render.lua b/lua/diffview/scene/views/file_history/render.lua
index 24b13970..232b839f 100644
--- a/lua/diffview/scene/views/file_history/render.lua
+++ b/lua/diffview/scene/views/file_history/render.lua
@@ -142,7 +142,7 @@ local function render_entries(panel, parent, entries, updating)
       comp:add_text((" (%s)"):format(entry.commit.ref_names), "DiffviewReference")
     end
 
-    local subject = utils.str_trunc(entry.commit.subject, 72)
+    local subject = utils.str_trunc(entry.commit.subject, c.file_history_panel.max_len_commit_subject)
 
     if subject == "" then
       subject = "[empty message]"