Problem:
- `syn region ...`s in syntax/mysql.vim match function names inaccurately.
- no syntax rules for mysql window function.
- coarse highlight definition in syntax/mysql.vim.
Solution:
- add `\<` before the function name for accuracy.
- add syntax rules for mysql window function.
- enhance the highlight definition.
closes: #15311
Signed-off-by: Yinzuo Jiang <jiangyinzuo@foxmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
6e37575760
