csplit: empty file not created with --suppress-matched and multiple patterns

[Felle33]

While I was experimenting the --suppress-matched option, I have found this particular case:

printf "1\n2\n3\n4\na\n" | ./target/debug/csplit --suppress-matched - 2 /a/

The uutils csplit outputs in standard output:

2
4

The GNU csplit outputs in standard output:

2
4
0

It creates three files and the last one (xx02) is empty.
I have created a new issue because I think it is different from the #7052. What do you think?

[cakebaker]

Yes, it looks like a different issue.

[Felle33]

Note: this issue is what makes the csplit-suppress-matched.pl test 7318 fail