fix #684 - improve g_ in visual mode
fix #684 - improve g_ in visual mode

wbcustc/Vintageous,zhangtuoparis13/Vintageous,himacro/Vintageous,wbcustc/Vintageous,gerardroche/Vintageous,denim2x/Vintageous,xushuwei202/Vintageous,guillermooo-forks/Vintageous,xushuwei202/Vintageous,himacro/Vintageous,zhangtuoparis13/Vintageous,himacro/Vintageous,denim2x/Vintageous,xushuwei202/Vintageous,zhangtuoparis13/Vintageous,wbcustc/Vintageous,vastcharade/Vintageous,guillermooo-forks/Vintageous,vastcharade/Vintageous,guillermooo-forks/Vintageous,denim2x/Vintageous