From ee69335de176d9325267b0fd2597a22901d927b1 Mon Sep 17 00:00:00 2001
From: Frederick Zhang <frederick888@tsundere.moe>
Date: Wed, 29 Mar 2023 15:38:59 +1100
Subject: [PATCH] Use ?plain=1 for range links to GitHub markups

GitHub markups are by default rendered by [1], which doesn't map
original line anchors into the previews.

[1] https://github.com/github/markup
---
 autoload/rhubarb.vim | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/autoload/rhubarb.vim b/autoload/rhubarb.vim
index 1709981..4e5999c 100644
--- a/autoload/rhubarb.vim
+++ b/autoload/rhubarb.vim
@@ -296,6 +296,8 @@ endfunction
 
 " Section: Fugitive :GBrowse support
 
+" https://github.com/github/markup
+let s:markup_exts = ['markdown', 'mdown', 'mkdn', 'md', 'textile', 'rdoc', 'org', 'creole', 'mediawiki', 'wiki', 'rst', 'asciidoc', 'adoc', 'asc', 'pod']
 function! rhubarb#FugitiveUrl(...) abort
   if a:0 == 1 || type(a:1) == type({})
     let opts = a:1
@@ -323,6 +325,9 @@ function! rhubarb#FugitiveUrl(...) abort
   elseif get(opts, 'type', '') ==# 'blob' || opts.path =~# '[^/]$'
     let escaped_commit = substitute(commit, '#', '%23', 'g')
     let url = root . '/blob/' . escaped_commit . '/' . path
+    if get(opts, 'line1') > 0 && index(s:markup_exts, fnamemodify(path, ':e')) >= 0
+      let url .= '?plain=1'
+    endif
     if get(opts, 'line2') > 0 && get(opts, 'line1') == opts.line2
       let url .= '#L' . opts.line1
     elseif get(opts, 'line1') > 0 && get(opts, 'line2') > 0