脚本 : How do I save and restore a register?

Question

如何保存寄存器的当前状态并在以后恢复它？

我想确保我的函数没有意外的副作用。

Answer 1

为了安全地执行此操作，您不仅需要恢复寄存器的内容，还需要恢复其类型:

let old_reg = getreg("a")               " Save the current content of register 'a'
let old_reg_type = getregtype("a")      " Save the type of the register as well

" <Use the register 'a' as a temporary scratch pad here>

call setreg("a", old_reg, old_reg_type) " Restore register 'a'