Feature Request: escape `$$`

[nicknovitski]

Thank you so much for this project, the -no-unset option was exactly what I was looking for, I've immediately replaced our usage of gettext with it.

Now that I'm a user, would it be possible for envsubst to replace all strings $$foo with $foo?

In my case, I have kubernetes templates for nginx configuration, which I template with some values, but which also contain nginx variables like $remote_user and $bytes_sent strings. My current choices are either to not use -no-unset, or (what I actually do) implement my own escaping with sed.

[a8m]

Hey @nicknovitski, Thanks for your feedback. I'm glad you find it useful.

I agree that this feature is necessary, but I'm not sure if I prefer \ or $ for escaping. I would like to see what other people think about it.

[tshak]

I like double dollar ($${escape_me}). This is how terraform templates works as well.

[a8m]

Closing via v1.1.0. Thanks