Applying hgignore file to already committed file Mercurial repo

Trying to do something similar to here: Applying .gitignore to committed files

Where you apply the new hgignore file to the already committed files.

I have node_modules folder already committed with thousands of files and I'd like to remove it by using the new hgignore file.

I can't find anything online for it to work on a Mercurial repo, any ideas? Thanks!

1. Edit .hgignore to match files you want to ignore
2. hg forget "set:hgignore()" and commit

See in action:

• https://asciinema.org/a/kuJERsouDkOUBspADjDM5pMRQ

See also:

• hg remove all files listed in .hgignore
• How to check which files are being ignored because of .hgignore?