comment-spacings exceptions do not work if there's no colon after the exception

[gfariasalves-ionos]

Describe the bug
Some projects like Kubebuilder have markers that do not follow the pattern //name:, example: //+optional. Due to

revive/rule/comment-spacings.go

Line 34 in f88f60d

r.allowList = append(r.allowList, `//`+allow+`:`)

having a colon added at the end they don't work.

To Reproduce
Steps to reproduce the behavior:

1. Write this config file:

[rule.comment-spacings]
  arguments = ["+optional"]

1. Write this test file:

package main

import "fmt"

// example is an example struct
//+optional
type example struct {
	a int
}

func main() {
	a := example{a: 1}
	fmt.Println(a.a)
}

Expected behavior
I don't get an error

Logs
I get an error (logs from golangci-lint but the idea is the same):

comment-spacings: no space between comment delimiter and comment text (revive)
        //+optional
        ^

Desktop (please complete the following information):

• OS: OpenSUSE Tumbleweed
• Version of Go: 1.22

[chavacava]

Hi @gfariasalves-ionos, thanks for reporting the issue.
As you already pointed out, removing the : from line 34 of the rule will fix the problem.
(PR are welcome)

[gfariasalves-ionos]

I'll create one :)