Style/IfWithSemicolon auto-correction produces invalid code when statement includes elsif

[Desentso]

Style/IfWithSemicolon auto-correction produces syntactically invalid code when if semicolon statement also includes elsif semicolon statement.

---

Expected behavior

I would expect it to produce valid code or not try to auto-correct at all.

Actual behavior

Style/IfWithSemicolon auto-correction produces code that has syntax error.

In more detail, when trying to auto-correct statements that include if; and elsif; rubocop produces syntactically invalid code.

Steps to reproduce the problem

Run it on any file that contains structure similar to:

if x; "abc"
elsif y; "123"
end

You can then see that it produces =>

x ? "abc" : elsif y; "123"

which is obviously syntactically invalid.

RuboCop version

0.92.0 (using Parser 2.7.1.5, rubocop-ast 0.7.1, running on ruby 2.5.7 x86_64-darwin18)

[adrian-rivera]

I've made a PR #8831 this tries to fix this issue in the following way:

if x; 'abc' elsif y; '123' end

if x
  'abc'
elsif y
  '123'
end

It also accepts multiple elsif statements and else statements.