PICARD-3084: Allow up to 3 chars for Windows file name compatibility replacements

[jpauwels]

Summary

• This is a…
  • [] Bug fix
  • [x] Feature addition
  • [ ] Refactoring
  • [ ] Minor / simple change (like a typo)
  • [ ] Other
• Describe this change in 1-2 sentences: Allow up to 3 chars for Windows file name compatibility replacements.

Problem

Only allowing one-for-one replacements of problematic characters on Windows limits the flexibility in rewriting file names. Concretely, I'd like to replace a colon with a dash with additional whitespace, such that "Title: Subtitle" becomes "Title - Subtitle" instead of "Title- Subtitle".

Solution

Adapt the regex conformity check to allow up to three characters replacement for a single problematic character.

Action

Additional actions required:

• [ ] Update Picard documentation (please include a reference to this PR)
• [ ] Other (please specify below)

[phw]

As this is a functional change that needs to be added to the changelog we also need a ticket on https://tickets.metabrainz.org/ before we can merge this.

[phw]

I added PICARD-3084 to track this. But the PR still needs more work before it is mergeable. The UI must be adjusted to allow more characters as well.

[rdswift]

I'm not against this change, but couldn't the desired behavior be produced using a tagger script? Something like:

$set(_new_title,$rreplace($replace(%title%,:, - ),\\s+, ))

and then use %_new_title% in the file naming script instead of %title%?