fix(attach): reattach buffers once detached

fnl/emission/init.fnl

@@ -272,7 +272,10 @@
               new-end-col-offset
               new-end-byte-offset]
   (if (. cache.buf->detach? buf)
-      true
+      (do
+        (tset cache.buf->detach? buf nil)
+        (debug! "detached from buf" buf)
+        true)
       ;; NOTE: Return a truthy value to detach.
       ;; NOTE: `on_bytes` would be called before buf becomes valid; therefore,
       ;; check to detach should only be managed by `buf->detach` value.
@@ -347,10 +350,6 @@
         ;; HACK: Keep the `nil` to make sure not to detach unexpectedly.
         nil)))
 
-(fn on-detach [_string-detach buf]
-  (tset cache.buf->detach? buf nil)
-  (debug! "detached from buf" buf))
-
 (fn excluded-buf? [buf]
   (or (vim.list_contains cache.config.attach.excluded_buftypes
                          (. vim.bo buf :buftype))
@@ -375,7 +374,8 @@
            (do
              (cache-old-texts buf)
              (vim.api.nvim_buf_attach buf false
-                                      {:on_bytes on-bytes :on_detach on-detach})
+                                      ;; NOTE: on_detach does not work?
+                                      {:on_bytes on-bytes})
              (debug! "attached to buf" buf))
            (debug! "the buf did not meet the requirements to be attached" buf))
       (vim.defer_fn cache.config.attach.delay))