Fix bug where RED prerpocessing crashes if input 100% unmasked

ComparativeGenomicsToolkit / cactus

Official home of genome aligner based upon notion of Cactus graphs

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Fix bug where RED prerpocessing crashes if input 100% unmasked #1328

Closed glennhickey closed 3 months ago

glennhickey commented 3 months ago

Even though it's recommended to RepeatMask Progressive Cactus input, that's still no excuse for crashing when the input is completely unmasked. But that's what happens as of v.2.8.0. This PR fixes it.

Resolves #1327

See https://github.com/ComparativeGenomicsToolkit/cactus/issues/1327#issuecomment-2021443396 for workarounds.