1. How to set the default vertical split screen when opening multiple files?
It can only be implemented now, and the default is horizontal split screen
2. How to set up to support syntax highlighting when opening Macvim?
Now open a blank space, save it as XXX.cpp and then reopen it to support highlighting
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This is a problem with vim and has nothing to do with Mac
vim -o file1 file2和vim -O file1 file2分别是打开vim时直接水平分屏和垂直分屏，或者-o和-O后面跟数字参数表示希望分屏的数量，当然gvim或者mvim的参数也一样。如果已经打开vim，使用:split和:vsplitHorizontal split screen and vertical split screen respectivelyIf you have an unsaved file and want to force syntax highlighting in a certain language, use the command
:set syntax=XXX，例如:set syntax=cpp，:set syntax=offto close it1、
split是水平分屏的意思，vsplit是垂直分屏2、没有文件名文件又是空的情况下，vim 是无从判断使用的是什么语言的，可以执行一句
set ft=cpp,如果你想直接打开就是cpp不用执行这一句，那么就可以把这一句写到配置文件里，但是这样打开其他无论什么文件都会被设置为cpp