Question

Say if we have a project known as main, and then we have a project that is analytics, and in Bash, we are at the analytics working directory and accidentally push to the main remote repository, will all the files in analytics be added to the main project, and is it reversible?

Answer 1

You will get a complaint from Mercurial and the push will be aborted. It looks like this:

# create main repo:
% hg init main
% touch main/a.txt
% hg -R main commit --addremove -m main
adding a.txt

# create analytics repo
% hg init analytics
% touch analytics/a.txt
% hg -R analytics commit --addremove -m analytics
adding a.txt

# try the push:
% hg -R analytics push main
pushing to main
searching for changes
abort: repository is unrelated

Mercurial knows if two repositories are related based on their root nodes. That is, repositories A and B are related if they share a common root node.