Are any of these bracket-fixing challenges duplicate?

Question

While collecting a list of all challenges related to balanced strings I found that we have (at least) 4 challenges related to fixing unbalanced strings by adding or removing parentheses/braces/brackets. I haven't compared the specs in detail yet, but I figured there is likely going to be some overlap, and I thought it should probably be up to the community anyway to decide if any of those are duplicates or not:

• Fix unbalanced brackets
• Finish lazy parentheses
• Write a program which replaces with spaces the braces in cases where braces in places cause stasis
• Fix the Braces, etc

If the outcome is "they're all sufficiently different" that's fine, but I figured we should talk about it...

Answer 1

1 and 4 are very similar. They both allow only brackets, and they both require the minimum number of additions to make the brackets fully balanced. 4 is newer, but IMO better written with a more concise spec. Therefore, we should close 1 as a dupe of 4.

2 and 3 are also very similar. Initially, I was going to recommend closing one of them, but I've changed my mind. I think the differences are significant enough that they should both stay open.

They both require parsing of string literals and comments, but 2:

• Is multiline.

• Only requires balancing parentheses.

• Allows adding or deleting of parentheses.

3:

• Is single line.

• Requires balancing several types of brackets.

• Only allows removing brackets.

So I'd say 2 and 3 should stay open.