From 771b84141fedc0ca221992e287a86eaa929e8bed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6ran=20Karl?=
 <3951388+JoeKar@users.noreply.github.com>
Date: Sun, 29 Dec 2024 13:22:35 +0100
Subject: [PATCH] plugin: linter: Use new `onBufferOptionChanged` callback

---
 runtime/plugins/linter/linter.lua | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/runtime/plugins/linter/linter.lua b/runtime/plugins/linter/linter.lua
index 0ce4b2b0..d5bd9541 100644
--- a/runtime/plugins/linter/linter.lua
+++ b/runtime/plugins/linter/linter.lua
@@ -141,6 +141,32 @@ function onSave(bp)
     return true
 end
 
+function onBufferOptionChanged(buf, option, old, new)
+    if option == "filetype" then
+        if old ~= new then
+            for k, v in pairs(linters) do
+                local ftmatch = old == v.filetype
+                if v.domatch then
+                    ftmatch = string.match(old, v.filetype)
+                end
+
+                local hasOS = contains(v.os, runtime.GOOS)
+                if not hasOS and v.whitelist then
+                    ftmatch = false
+                end
+                if hasOS and not v.whitelist then
+                    ftmatch = false
+                end
+
+                if ftmatch then
+                    buf:ClearMessages(k)
+                end
+            end
+        end
+    end
+    return true
+end
+
 function lint(buf, linter, cmd, args, errorformat, loff, coff, callback)
     buf:ClearMessages(linter)