Hi, I’m on Emacs 29.4 and Org 9.7-pre (`org-git-version`: `release_9.6.28-1418-g288e0a`).
I noticed many `org-babel-default-header-args:*` variables are plain `defvar`s (e.g., `org-babel-default-header-args:sh`), while some related Babel settings are `defcustom`s with explicit types. Because these are `defvar`s, Customize has no declared `custom-type` and uses type guessing in `cus-edit.el` (`custom-variable-type` / `custom-guess-type`). For `org-babel-default-header-args:sh`, using Customize’s `Toggle` can set the value to `t` instead of an alist, and then tangling fails with: ```text wrong-type-argument listp t org-babel-merge-params(... t ...) ``` Would it make sense to define `org-babel-default-header-args:*` as `defcustom` with an explicit alist type (similar in spirit to typed Babel vars like `org-babel-tangle-lang-exts`), so Customize does not present boolean-style toggle behavior here? Thanks, Matthew
