transformerDirectives fails to apply in nested CSS

[CodeF53]

UnoCSS version

0.60.2

Describe the bug

@apply doesn't work following nested css.

.a {
  @apply 'ma'; /* applies */
  .b { @apply 'bg-green' } /* applies */
  @apply 'bg-red'; /* doesn't apply */
}

Reproduction

Reproduction

System Info

Windows 10, WSL Ubuntu, Firefox and Chromium, UnoCSS CLI, Ruby On Rails

Validations

• Read the Contributing Guidelines.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[Simon-He95]

css-tree does not currently support nested css, so there may be problems with parsing and it is not recommended to use it this way.