Composer: unsupported value if != constraint used

[martipoe]

What would you like help with?

I think I found a bug

How are you running Renovate?

Self-hosted

If you're self-hosting Renovate, tell us which platform (GitHub, GitLab, etc) and which version of Renovate.

Gitlab

Please tell us more about your question or problem

I am using this version constraint with PHP Composer in composer.json:
"typo3/cms-core": "^12.4.7 !=12.4.8",

This syntax should be supported as per https://semver.madewithlove.com/?package=typo3%2Fcms-core&constraint=%5E12.4.7+!%3D12.4.8&stability=stable

However, RenovateBot seems not to support this syntax (see logs).

Consequently, this package and all packages depending on it are not updated.

It would be nice if this could be fixed/supported.

Logs (if relevant)

Logs

DEBUG: Dependency typo3/cms-core has unsupported/unversioned value ^12.4.7 !=12.4.8 (versioning=composer)`

[rarkins]

It seems like it's the != part causing the problem. Here's some example tests I added:

    ✓ isValid("^12.4.7") === true
    ✕ isValid("!=12.4.8") === true (1 ms)
    ✕ isValid("^12.4.7 !=12.4.8") === true
    ✓ isValid("^12.4.7 >12.4.8") === true
    ✕ isValid("^12.4.7 | !=12.4.8") === true (1 ms)
    ✕ isValid("^12.4.7 || !=12.4.8") === true

[rarkins]

Converted to issue: #31504