Function word_diff_ops_imara 

pub fn word_diff_ops_imara(
    old_words: &[&str],
    new_words: &[&str],
) -> Vec<DiffOp>

Diff two token streams with a faithful port of Git’s xdiff Myers engine and return the result as similar::DiffOps. Used by the word-diff machinery, where matching Git’s exact record selection and tie-breaking matters: imara-diff/similar pick different — but equally minimal — alignments for streams with many repeated tokens (e.g. the bibtex driver’s {/}/,), mismatching Git’s reference output.