Allow vim-polyglot to load in non-compatible mode

autoload/go/config.vim

@@ -581,9 +581,9 @@ function! go#config#DiagnosticsEnabled() abort
 endfunction
 
 function! go#config#DiagnosticsLevel() abort
-  let l:default = 2
-  if has_key(g:, 'go_diagnostics_enabled') && !g:go_diagnostics_enabled
-    let l:default = 0
+  let l:default = 0
+  if has_key(g:, 'go_diagnostics_enabled') && g:go_diagnostics_enabled
+    let l:default = 2
   endif
 
   return get(g:, 'go_diagnostics_level', l:default)

autoload/polyglot/sleuth.vim

@@ -1,3 +1,9 @@
+" Restore 'cpoptions'
+let s:cpo_save = &cpo
+set cpo&vim
+
+" DO NOT EDIT CODE BELOW, IT IS GENERATED WITH MAKEFILE
+
 let s:globs = {
   \ '8th': '*.8th',
   \ 'Jenkinsfile': '*.jenkinsfile,*.Jenkinsfile,Jenkinsfile,Jenkinsfile*',
@@ -624,6 +630,13 @@ let s:globs = {
   \ 'zsh': '*.zsh,.zshrc,.zshenv,.zlogin,.zprofile,.zlogout,.zlog*,.zcompdump*,.zfbfmarks,.zsh*',
   \}
 
+
+" DO NOT EDIT CODE ABOVE, IT IS GENERATED WITH MAKEFILE
+
 func! polyglot#sleuth#GlobForFiletype(type)
   return get(s:globs, a:type, '')
 endfunc
+
+" Restore 'cpoptions'
+let &cpo = s:cpo_save
+unlet s:cpo_save

doc/vim-go.txt

@@ -1948,9 +1948,9 @@ disabled.
 
 Specifies the `gopls` diagnostics level. Valid values are 0, 1, and 2. 0
 ignores `gopls` diagnostics, 1 is for errors only, and 2 is for errors and
-warnings. By default it is 2.
+warnings. By default it is 0.
 >
-  let g:go_diagnostics_level = 2
+  let g:go_diagnostics_level = 0
 <
 
                                                   *'g:go_template_autocreate'*

ftdetect/polyglot.vim

@@ -10,6 +10,10 @@ endif
 
 let did_load_polyglot = 1
 
+" Switch to compatible mode for the time being
+let s:cpo_save = &cpo
+set cpo&vim
+
 " It can happen vim filetype.vim loads first, then we need a reset
 if exists("did_load_filetypes")
   au! filetypedetect
@@ -2625,6 +2629,7 @@ au BufEnter * if &ft == "" && expand("<afile>:e") == ""  |
 
 augroup END
 
+
 if !has_key(s:disabled_packages, 'autoindent')
   " Code below re-implements sleuth for vim-polyglot
   let g:loaded_sleuth = 1
@@ -3430,3 +3435,7 @@ if exists("did_load_filetypes") && exists("g:polyglot_disabled")
   unlet did_load_filetypes
   runtime! extras/filetype.vim
 endif
+
+" Restore 'cpoptions'
+let &cpo = s:cpo_save
+unlet s:cpo_save

scripts/build

@@ -848,15 +848,7 @@ def generate_plugins(packages)
   end
   output << "  \\}\n\n"
 
-
-  output << <<~EOS
-    func! polyglot#sleuth#GlobForFiletype(type)
-      return get(s:globs, a:type, '')
-    endfunc
-  EOS
-
-
-  File.write('autoload/polyglot/sleuth.vim', output)
+  inject_code('autoload/polyglot/sleuth.vim', output)
 end
 
 def process_list(list, extras)

scripts/test

@@ -7,7 +7,6 @@ def run_script(src)
 end
 
 def run_vimscript(src)
-
   wrapper = <<~EOF
     vim --clean --not-a-term -u <(cat <<- "EOM"
     set nocompatible