Hi,

=:dir= specifies the directory for code execution, i.e. when you hit =C-c
C-c= what is the environment in which the code is run?

=:mkdirp= forces creation of the directory for tangle output, i.e. when you
=org-babel-tangle= where do you put the output source code?

They are quite separate concerns.

Regards,
Sean

On Tue, 5 Mar 2019 at 06:03, stardiviner <numbchild@gmail.com> wrote:

>
> I realized one thing, the combination of ~:mkdir~, ~:dir~, and ~:tangle~
> does not work
> good enough. Can make ~:tangle~ respect ~:dir~ too. WDYT?
>
> Here is an example:
>
> #+begin_src clojure :mkdirp yes :dir "data/code/clj-crawler-demo" :tangle
> "src/clj_crawler_demo/core.clj"
> (ns clj-crawler-demo.core
>   (:require [clj-http.client :as http])
>   (:require [net.cgrand.enlive-html :as html]))
>
> (html/select
>  (-> (http/get "https://www.baidu.com")
>      :body
>      html/html-snippet)
>  [:div])
> #+end_src
>
> Why need this? If ~:tangle~ respect ~:dir~, it will don't need the
> complete path to
> tangled file. And when the source block has other header argument need dir
> like
> ~:file~, this will make ~:tangle~ and other related header arguments
> shorter.
>
> If ~:tangle~ does not respect ~:dir~, user need to repeat the path:
>
> #+begin_src clojure :mkdirp yes :dir "data/code/clj-crawler-demo" :tangle
> "data/code/clj-crawler-demo/src/clj_crawler_demo/core.clj"
> (ns clj-crawler-demo.core
>   (:require [clj-http.client :as http])
>   (:require [net.cgrand.enlive-html :as html]))
>
> (html/select
>  (-> (http/get "https://www.baidu.com")
>      :body
>      html/html-snippet)
>  [:div])
> #+end_src
>
> This is long, I know there is ~#+headers:~ for source block. But reduce
> info would
> be better. I also consider the disadvantage of this change. Some user's
> existing
> source block might be broken.
>
> Let's level this change for discussion.
>
> --
> [ stardiviner ]
>        I try to make every word tell the meaning what I want to express.
>
>        Blog: https://stardiviner.github.io/
>        IRC(freenode): stardiviner, Matrix: stardiviner
>        GPG: F09F650D7D674819892591401B5DF1C95AE89AC3
>
>
>