From 60967cd9aac545a5a5f17070d39121d4070e2298 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Sat, 27 Jul 2024 16:48:29 +0800
Subject: vim-patch:9.1.0616: filetype: Make syntax highlighting off for MS
 Makefiles (#29874)

Problem:  filetype: Make syntax highlighting off for MS Makefiles
Solution: Try to detect MS Makefiles and adjust syntax rules to it.
          (Ken Takata)

Highlighting of variable expansion in Microsoft Makefile can be broken.
E.g.:
https://github.com/vim/vim/blob/2979cfc2627d76a9c09cad46a1647dcd4aa73f5f/src/Make_mvc.mak#L1331

Don't use backslash as escape characters if `make_microsoft` is set.
Also fix that `make_no_comments` was not considered if `make_microsoft`
was set.

Also add description for `make_microsoft` and `make_no_comments` to the
documentation and include a very simple filetype test

closes: vim/vim#15341

https://github.com/vim/vim/commit/eb4b903c9b238ebcc1d14cfcb207129b4931a33d

Co-authored-by: Ken Takata <kentkt@csc.jp>
---
 runtime/lua/vim/filetype.lua        |  6 +++---
 runtime/lua/vim/filetype/detect.lua | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+), 3 deletions(-)

(limited to 'runtime/lua/vim')

diff --git a/runtime/lua/vim/filetype.lua b/runtime/lua/vim/filetype.lua
index 7cbf3a158d..bf00392087 100644
--- a/runtime/lua/vim/filetype.lua
+++ b/runtime/lua/vim/filetype.lua
@@ -693,8 +693,8 @@ local extension = {
     return not (path:find('html%.m4$') or path:find('fvwm2rc')) and 'm4' or nil
   end,
   eml = 'mail',
-  mk = 'make',
-  mak = 'make',
+  mk = detect.make,
+  mak = detect.make,
   page = 'mallard',
   map = 'map',
   mws = 'maple',
@@ -2122,7 +2122,7 @@ local pattern = {
     ['^Containerfile%.'] = starsetf('dockerfile'),
     ['^Dockerfile%.'] = starsetf('dockerfile'),
     ['^[jJ]ustfile$'] = 'just',
-    ['[mM]akefile$'] = 'make',
+    ['[mM]akefile$'] = detect.make,
     ['^[mM]akefile'] = starsetf('make'),
     ['^[rR]akefile$'] = 'ruby',
     ['^[rR]akefile'] = starsetf('ruby'),
diff --git a/runtime/lua/vim/filetype/detect.lua b/runtime/lua/vim/filetype/detect.lua
index 1fe7db0e1f..cb953f9d0c 100644
--- a/runtime/lua/vim/filetype/detect.lua
+++ b/runtime/lua/vim/filetype/detect.lua
@@ -972,6 +972,24 @@ local function m4(contents)
   end
 end
 
+--- Check if it is a Microsoft Makefile
+--- @type vim.filetype.mapfn
+function M.make(_, bufnr)
+  vim.b.make_microsoft = nil
+  for _, line in ipairs(getlines(bufnr, 1, 1000)) do
+    if matchregex(line, [[\c^\s*!\s*\(ifn\=\(def\)\=\|include\|message\|error\)\>]]) then
+      vim.b.make_microsoft = 1
+      break
+    elseif
+      matchregex(line, [[^ *ifn\=\(eq\|def\)\>]])
+      or findany(line, { '^ *[-s]?%s', '^ *%w+%s*[!?:+]=' })
+    then
+      break
+    end
+  end
+  return 'make'
+end
+
 --- @type vim.filetype.mapfn
 function M.markdown(_, _)
   return vim.g.filetype_md or 'markdown'
-- 
cgit