Update syntax/propane.vim for propane 4.5.0

plugin/holtrop.lua

@@ -43,9 +43,14 @@ vim.api.nvim_create_autocmd({ "BufReadPost", "BufNewFile" }, {
             if vim.bo.filetype ~= "make" then
                 vim.opt_local.expandtab = true
             end
-            vim.opt_local.ts = 4
-            vim.opt_local.sw = 4
-            vim.opt_local.sts = 4
+            local ft = vim.bo.filetype
+            local indent = 4
+            if ft == "ruby" or ft == "html" or ft == "xml" then
+                indent = 2
+            end
+            vim.opt_local.ts = indent
+            vim.opt_local.sw = indent
+            vim.opt_local.sts = indent
             vim.opt_local.cinoptions = ":0,g0"
         end)
     end,

syntax/propane.vim

@@ -8,7 +8,11 @@ if exists("b:current_syntax")
 endif
 
 if !exists("b:propane_subtype")
-  let b:propane_subtype = "d"
+  if search('\<import\s\+\%(std\|core\)\.', 'nw') > 0
+    let b:propane_subtype = "d"
+  else
+    let b:propane_subtype = "cpp"
+  endif
 endif
 
 exe "syn include @propaneTarget syntax/".b:propane_subtype.".vim"
@@ -20,7 +24,7 @@ syn match propaneOperator "->"
 syn match propaneFieldAlias ":[a-zA-Z0-9_]\+" contains=propaneFieldOperator
 syn match propaneFieldOperator ":" contained
 syn match propaneOperator "?"
-syn keyword propaneKeyword drop free_token_node free_token_user_fields module prefix ptype start token token_user_fields tokenid tree tree_prefix tree_suffix
+syn keyword propaneKeyword context_user_fields drop free_token_node lex_fn module noline on_token_node prefix ptype start token token_user_fields tokenid tree tree_prefix tree_suffix
 
 syn region propaneRegex start="/" end="/" skip="\v\\\\|\\/"