### UnoCSS version 66.5.7 ### Describe the bug The writing of a negative sign at the beginning is not supported, but `space-x--2` is fine. ### Reproduction https://unocss.dev/play/#html=DwEwlgbgBAxgNgQwM5ILwCIBmcCmAPKAWiQAcEYdC9CAmdAPgCgopgxZEUMxCYEAnAEYB7AHaE4wgObDCUsABcAFgFdBDYAHowTFmw7I06HnyFiJ02fOVqN23a3bxD3XgJHjJMuYtXr6WjqMWuAQ9EA&config=JYWwDg9gTgLgBAbwFBzgEwKYDNgDsMDCEuOA5gDQpxhQYDOGMAgjDFMAEYCuMwWAnpVQ16jAJIBjYnSHVaDGAHU8aACyUAvnCxQIIOAHIuuCBLp0DSJBgAekWOmwBDLgBt4mHPiIlgpABTIqFBu9ABccADaVKiRBhJcdDB6ALQhrhgG5IhwUq7QEQa0aAZwGgC6spVUdAAW0DAJMHQRQaiGCUmpdQ1NBoUwtjAprqRwgzbD0E64pBhw9QBuGFBhE8ODTq5ZVBqyIgotUTFyokoqqv4AlLLC8owsbJw8fPzXt6cKktKBJ6h0Ei2GAiAEYAHQAJg%2BqAkaFwhVqrDALQA9Cj6CAwXUUTt2mUblRqhorkggA&css=PQKgBA6gTglgLgUzAYwK4Gc4HsC2YDCAyoWABYJQIA0YAhgHYAmYcUD6AZllDhWOqgAOg7nAB0YAGLcwCAB60cggDYIAXGBDAAUKDBi0mXGADe2sGC704AWgDuCGAHNScDQFYADJ4Dc5sAACtMLKAJ5gggCMLPK2ABR2pPBIcsoAlH4WAEa0yADWTlBYqEw2yFjK3Bpw5LxxAOTllVDoYpSMYgAs3vUZ2gC%2BmsBAA&options=N4XyA ### System Info _No response_ ### Validations - [x] Read the [Contributing Guidelines](https://github.com/unocss/unocss/blob/main/.github/CONTRIBUTING.md). - [x] Check that there isn't [already an issue](https://github.com/unocss/unocss/issues) that reports the same bug to avoid creating a duplicate. - [x] Check that this is a concrete bug. For Q&A open a [GitHub Discussion](https://github.com/unocss/unocss/discussions) or join our [Discord Chat Server](https://chat.antfu.me). - [x] The provided reproduction is a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) of the bug.
UnoCSS version
66.5.7
Describe the bug
The writing of a negative sign at the beginning is not supported, but
space-x--2is fine.Reproduction
https://unocss.dev/play/#html=DwEwlgbgBAxgNgQwM5ILwCIBmcCmAPKAWiQAcEYdC9CAmdAPgCgopgxZEUMxCYEAnAEYB7AHaE4wgObDCUsABcAFgFdBDYAHowTFmw7I06HnyFiJ02fOVqN23a3bxD3XgJHjJMuYtXr6WjqMWuAQ9EA&config=JYWwDg9gTgLgBAbwFBzgEwKYDNgDsMDCEuOA5gDQpxhQYDOGMAgjDFMAEYCuMwWAnpVQ16jAJIBjYnSHVaDGAHU8aACyUAvnCxQIIOAHIuuCBLp0DSJBgAekWOmwBDLgBt4mHPiIlgpABTIqFBu9ABccADaVKiRBhJcdDB6ALQhrhgG5IhwUq7QEQa0aAZwGgC6spVUdAAW0DAJMHQRQaiGCUmpdQ1NBoUwtjAprqRwgzbD0E64pBhw9QBuGFBhE8ODTq5ZVBqyIgotUTFyokoqqv4AlLLC8owsbJw8fPzXt6cKktKBJ6h0Ei2GAiAEYAHQAJg%2BqAkaFwhVqrDALQA9Cj6CAwXUUTt2mUblRqhorkggA&css=PQKgBA6gTglgLgUzAYwK4Gc4HsC2YDCAyoWABYJQIA0YAhgHYAmYcUD6AZllDhWOqgAOg7nAB0YAGLcwCAB60cggDYIAXGBDAAUKDBi0mXGADe2sGC704AWgDuCGAHNScDQFYADJ4Dc5sAACtMLKAJ5gggCMLPK2ABR2pPBIcsoAlH4WAEa0yADWTlBYqEw2yFjK3Bpw5LxxAOTllVDoYpSMYgAs3vUZ2gC%2BmsBAA&options=N4XyA
System Info
No response
Validations