From 71503a15d791649fd7464682850763774aa08f63 Mon Sep 17 00:00:00 2001
From: Joe Paterson <1@1.com>
Date: Wed, 5 Nov 2025 22:58:50 +0000
Subject: [PATCH] Expose popup borderchars + document

---
 autoload/go/doc.vim |  4 +++-
 doc/vim-go.txt      | 15 +++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/autoload/go/doc.vim b/autoload/go/doc.vim
index 253637fa9b..45eba1ceb1 100644
--- a/autoload/go/doc.vim
+++ b/autoload/go/doc.vim
@@ -93,7 +93,9 @@ function! s:GodocView(newposition, position, content, package) abort
       call popup_clear()
 
       let borderchars = ['-', '|', '-', '|', '+', '+', '+', '+']
-      if &encoding == "utf-8"
+      if exists('g:go_borderchars')
+        let borderchars = g:go_borderchars
+      elseif &encoding == "utf-8"
         let borderchars = [ "═", "║", "═", "║", "╔","╗", "╝", "╚" ]
       endif
 
diff --git a/doc/vim-go.txt b/doc/vim-go.txt
index 00dfc7797e..e78e2d08c8 100644
--- a/doc/vim-go.txt
+++ b/doc/vim-go.txt
@@ -1394,6 +1394,21 @@ Use this option to use the popup-window for |K| and |:GoDoc|, rather than the
   let g:go_doc_popup_window = 0
 <
 
+                                                        *'g:go_borderchars'*
+
+Use this option to control the border chars for the popup window, if enabled.
+Default is:
+>
+  ['-', '|', '-', '|', '+', '+', '+', '+']
+<
+And if UTF is enabled: 
+>
+  [ "═", "║", "═", "║", "╔","╗", "╝", "╚" ]
+>
+>
+  let g:go_borderchars = ['─', '│', '─', '│', '┌', '┐', '┘', '└']
+<
+
                                                              *'g:go_def_mode'*
 
 Use this option to define the command to be used for |:GoDef|. By default