bug(rule): unique-headings not ignored

1. Summary

I couldn't ignore unique-headings rule, use ignoring parts of CSS during linting.

I don't reproduce this issue for another CSSLint rules.

2. Environment

Windows 10.0.18362 Enterprise 64-bit EN
Node.js 12.12.0
csslint 1.0.4

3. Data

KiraIgnoreHeadings.css:

/* csslint ignore:start */

h1,
.SashaFirstClass {
    font-family: sans-serif
}

h1,
.SashaSecondClass {
    font-style: italic
}

/* csslint ignore:end */

4. Steps to reproduce

csslint KiraIgnoreHeadings.css

I reproduce the problem for CSSLint online.

5. Expected behavior

No errors and/or warnings.

6. Actual behavior

csslint: There is 1 problem in D:\SashaDebugging\KiraCSSLint\KiraIgnoreHeadings.css.

KiraIgnoreHeadings.css
1: warning
You have 2 h1s defined in this stylesheet.

7. Not helped

I can't use ignoring rules per line, because I use Stylus → I can't preserve comment on specific line after Stylus to CSS compilation.
peterorum answer doesn't work for me, see my comment.

8. Don't offer

8.1. “You don't need to ignore this option”

Please, read #80. I agree with users @trygve-lie and @Nateowami.

Thanks.

CSSLint / csslint

bug(rule): unique-headings not ignored #759