Fix .env.local additions in .gitignore

[evadecker]

Discussed in Discord here.

I'm working on an open source repo that requires contributors to initialize Convex on their local machines. I've noticed a few contributors push code that adds .env.local at the bottom of .gitignore, even though it's already listed above. I think this is being added automatically during the initialization process. Is there a way to disable this, or to improve the .gitignore pattern matching so it doesn't get added?

This PR updates the changesToGitIgnore() function to more robustly check for .env.local (and related variants), accounting for /r on Windows or extra whitespace which previously led to false positives.

New test cases were added to verify the updated conditions.

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[evadecker]

After reviewing the .gitignore spec: inline comments with # aren't valid. Comments must always start on a new line. Updated the matching + tests to reflect this.

[thomasballinger]

Thanks for the fix @evadecker! This PR merged in 1af1b7f

[evadecker]

@thomasballinger it looks like the last commit in my PR was left out of the merged version.

I had to change some logic because inline comments aren't valid in .gitignore, and I was concerned splitting on # could potentially split a directory or file by mistake (very unlikely but possible)

c853fcc

Also added other test cases

[thomasballinger]

Oops, thanks. I'll fix that up and fix the script that pulls things into the other repo.