使用正则表达式模式的奇怪行为

Question

I'm using the following regular expression to match 0 or more characters of any kind not including -,$,]

Regex Expression:

(.*[^\-\$\]])

Is this the correct expression for doing this? When I try it on the following string "hello-world" it doesn't seem to exclude the -

Answer 1

You are matching any character including those characters an arbitrary number of times, followed by a single character that isn't one of those characters (ie your regex only dictates that those characters can't appear at the end of the string). You want this:

[^\-\$\]]*