From 5143419e2251efd7a3a63f0c7f34bbc51b46f239 Mon Sep 17 00:00:00 2001
From: Muhammad Saheed <89859744+MainKt@users.noreply.github.com>
Date: Wed, 26 Nov 2025 02:08:32 +0530
Subject: [PATCH] fix(man.lua): :Man slow/hangs if MANPAGER is set #36689

Problem:
When `MANPAGER` is set to something like 'nvim +Man!',
`vim.system({ 'nvim' })` call waits forever for input and times out
after 10 seconds in `system()` and the assert on `stdout` being not
`nil` fails.

Solution:
Set `MANPAGER=cat` when calling `system()`

(cherry picked from commit 87bd16e470b2d7a45f38c7402037ad1bcf91ded9)
---
 runtime/lua/man.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/runtime/lua/man.lua b/runtime/lua/man.lua
index 8f47757c2f..f0478dc113 100644
--- a/runtime/lua/man.lua
+++ b/runtime/lua/man.lua
@@ -427,7 +427,8 @@ local function get_page(path, silent)
   if localfile_arg == nil then
     local mpath = get_path('man')
     -- Check for -l support.
-    localfile_arg = (mpath and system({ 'man', '-l', mpath }, true) or '') ~= ''
+    localfile_arg = (mpath and system({ 'man', '-l', mpath }, true, { MANPAGER = 'cat' }) or '')
+      ~= ''
   end
 
   local cmd = localfile_arg and { 'man', '-l', path } or { 'man', path }