🐛 `rg --json -l | delta` yields unexpected results

[antoniojkim]

If you specify the -l option to ripgrep and pipe the output into delta and the file names contain hyphens, then we get unexpected behaviour.

I've constructed this small reproducer

 $ rg --json "test" | delta
test-3
1:test

test-1
1:test

test-2
1:test

with -l, I would expected just the names of the 3 test files, but instead

 rg --json -l "test" | delta
test:3
test:2
test:1

The hyphens get turned into semicolons, despite the output of ripgrep being as expected

$ rg --json -l "test"
test-3
test-2
test-1

[th1000s]

That is unfortunate, rg -l, --files-with-matches doesn't really output --json but just a plain list of files, and delta does its best to deal with this somewhat ambiguous output.

But delta rg .. (not released yet) could be improved to parse the -l and output what is expected.