Re: Convert the shell command used in emacs init-file into its normal version.

[Hongyi Zhao <hongyi.zhao@gmail.com>]

On Wed, Jun 9, 2021 at 3:01 PM Jean Louis <bugs@gnu.support> wrote:
>
> * Hongyi Zhao <hongyi.zhao@gmail.com> [2021-06-09 09:50]:
> > I found the following command from
> > <https://github.com/jethrokuan/mathpix.el/blob/02016ca4aee9ffce32e730372f45de35c00a3657/mathpix.el#L49>:
> >
> > "curl -s https://api.mathpix.com/v3/latex -X POST -H \"app_id: %s\" -H
> > \"app_key: %s\" -H \"Content-Type: application/json\" --data
> > \"{\\\"src\\\":\\\"%s\\\",\\\"formats\\\":
> > [\\\"latex_styled\\\"],\\\"format_options\\\":{\\\"latex_styled\\\":
> > {\\\"transforms\\\": [\\\"rm_spaces\\\"]}}}\""
> >
> > I want to obtain its normal version and test it under the system's
> > shell terminal. Any hints for deleting the escape characters correctly
> > from the above command in Emacs way?
>
> You should use the function `call-process' as it will help with
> quoting:
>
> (call-process "curl" nil nil nil "-s" "https://api.mathpix.com/v3/latex"
>               "-X" "POST" "-H" (format "app_id: %s" id)
>               "-H" (format "app_key: %s" key)
>               "-H" "Content-Type: application/json"
>               "--data" "{\"src\":\"%s\",
>                          \"formats\": [\"latex_styled\"],
>                          \"format_options\": {\"latex_styled\":
>                                              {\"transforms\": [\"rm_spaces\"]}}}")

You've stripped the escaping characters out manually in the above code.

>
> The data part I would format before it arrives to function `call-process'

I still can't figure out what do mean in this specific case.

>
> Please study the function definition with {C-h f call-process RET}
>
> --
> Jean
>
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-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
NO. 552 North Gangtie Road, Xingtai, China