I have 2 use cases for cf), but I don't use it a lot in the end:
One is when inside a parenthesis, and wanting to really delete till the closing parenthesis. But that would leave an unbalanced open paren. So in this case, I use ct) most of the times.
The other is when the cursor is before the opening parenthesis, and I want to delete the whole block. In that case, I found c% to be easier to me. The advantage being that it works with other delimiters ({[]}) handles nesting better, and it's multiline friendly.
If instead of c%, we speak about d%, another plus is that dot (.) will repeat the generic command, so
if (is_foo()) {
return 1;
}
can be cleared with `d%.` from the beginning of the first line.
One is when inside a parenthesis, and wanting to really delete till the closing parenthesis. But that would leave an unbalanced open paren. So in this case, I use ct) most of the times.
The other is when the cursor is before the opening parenthesis, and I want to delete the whole block. In that case, I found c% to be easier to me. The advantage being that it works with other delimiters ({[]}) handles nesting better, and it's multiline friendly.
If instead of c%, we speak about d%, another plus is that dot (.) will repeat the generic command, so
can be cleared with `d%.` from the beginning of the first line.