1 files changed, 29 insertions, 0 deletions
diff --git a/src/nvim/autocmd.c b/src/nvim/autocmd.c
index c66ee4286e..578542adfe 100644
--- a/src/nvim/autocmd.c
+++ b/src/nvim/autocmd.c
@@ -2758,3 +2758,32 @@ void do_autocmd_focusgained(bool gained)
 
   recursive = false;
 }
+
+void do_filetype_autocmd(buf_T *buf, bool force)
+{
+  static int ft_recursive = 0;
+
+  if (ft_recursive > 0 && !force) {
+    return;  // disallow recursion
+  }
+
+  char **varp = &buf->b_p_ft;
+  int secure_save = secure;
+
+  // Reset the secure flag, since the value of 'filetype' has
+  // been checked to be safe.
+  secure = 0;
+
+  ft_recursive++;
+  did_filetype = true;
+  // Only pass true for "force" when it is true or
+  // used recursively, to avoid endless recurrence.
+  apply_autocmds(EVENT_FILETYPE, buf->b_p_ft, buf->b_fname, force || ft_recursive == 1, buf);
+  ft_recursive--;
+
+  // Just in case the old "buf" is now invalid
+  if (varp != &(buf->b_p_ft)) {
+    varp = NULL;
+  }
+  secure = secure_save;
+}