vim-patch:9.0.0088: pattern for detecting bitbake files is not sufficient (#19547)

Problem:    Pattern for detecting bitbake files is not sufficient.
Solution:   Adjust the pattern. (Gregory Anders, closes vim/vim#10743)
30e212dac1

runtime/autoload/dist/ft.vim

@@ -519,7 +519,7 @@ func dist#ft#FTinc()
     " headers so assume POV-Ray
     elseif lines =~ '^\s*\%({\|(\*\)' || lines =~? s:ft_pascal_keywords
       setf pascal
-    elseif lines =~# '\<\%(require\|inherit\)\>' || lines =~# '\w\+ = '
+    elseif lines =~# '\<\%(require\|inherit\)\>' || lines =~# '[A-Z][A-Za-z0-9_:${}]*\s\+\%(??\|[?:+]\)\?= '
       setf bitbake
     else
       call dist#ft#FTasmsyntax()

runtime/lua/vim/filetype/detect.lua

@@ -554,7 +554,7 @@ function M.inc(bufnr)
     -- headers so assume POV-Ray
   elseif findany(lines, { '^%s{', '^%s%(%*' }) or matchregex(lines, pascal_keywords) then
     return 'pascal'
-  elseif findany(lines, { '^%s*inherit ', '^%s*require ', '^%s*%w+%s+= ' }) then
+  elseif findany(lines, { '^%s*inherit ', '^%s*require ', '^%s*%u[%w_:${}]*%s+%??[?:+]?= ' }) then
     return 'bitbake'
   else
     local syntax = M.asm_syntax(bufnr)

src/nvim/testdir/test_filetype.vim

@@ -1861,6 +1861,31 @@ func Test_inc_file()
   call assert_equal('bitbake', &filetype)
   bwipe!
 
+  call writefile(['S = "${WORKDIR}"'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('bitbake', &filetype)
+  bwipe!
+
+  call writefile(['DEPENDS:append = " somedep"'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('bitbake', &filetype)
+  bwipe!
+
+  call writefile(['MACHINE ??= "qemu"'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('bitbake', &filetype)
+  bwipe!
+
+  call writefile(['PROVIDES := "test"'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('bitbake', &filetype)
+  bwipe!
+
+  call writefile(['RDEPENDS_${PN} += "bar"'], 'Xfile.inc')
+  split Xfile.inc
+  call assert_equal('bitbake', &filetype)
+  bwipe!
+
   " asm
   call writefile(['asmsyntax=bar'], 'Xfile.inc')
   split Xfile.inc