Re: Use regex in ~/.emacs.d/init.el to match no_proxy.

[Leo Butler]

Hongyi Zhao <hongyi.zhao@gmail.com> writes:

> On Ubuntu 20.04, I set the following proxy settings in ~/.emacs.d/init.el,
>
> ;;; begin
> (setq url-proxy-services '(
>             ("no_proxy" .
> "^\\(.*\\.cn\\|localhost\\|10\\..*\\|127\\..*\\|172\\.16\\..*\\|172\\.17\\..*\\|192\\.168\\..*\\)")
>             ; "http://127.0.0.1:8080"; doesn't work
>             ("http" . "127.0.0.1:8080")
>             ("https" . "127.0.0.1:8080")
>                           ))
> ;;; end
>
> As you can see, the "no_proxy" string is rather cumbersome, and I want
> to express the following, but I still don't know what to do:
>
> "*.cn,localhost,10.0.0.0/8,127.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
>
> Any hints will be highly appreciated.


C-h i f regexp-opt RET