Vim - Count number of certain character

Question

I'm trying to define a function that does A if there's an even number of dollar signs (in my buffer), and B if there's an odd number of dollar signs. However, I'm unsure how to count the number of dollar signs, and then report that number for defining the function. For instance, entering

:%s/\\$//gn

will spit out this number on the status line. But how can one apply the result for defining a function?

Answer 1

根据@ DaveNewman的评论，你可以写：

:%s/\$//gn | let i = split(v:statusmsg)[0] | if i % 2 | ... | else | ... | endif