Problem:
- Current lua indentexpr does not indent for '(' ')'.
- Missing indent test for lua.
Solution:
- Match '(', ')' in `function GetLuaIndentIntern`.
- Add an indent test for lua.
closes: #15364
Signed-off-by: Yinzuo Jiang <jiangyinzuo@foxmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>