chore: Sync 'master' into 'devel' - #676
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This PR fixes and closes #613. There was no issue with `create_sigma_star_nft`, contrary to what the issue suggested. The problem was in the implementation of `is_in_lang_by_levels`, which is called by `is_in_lang`. In the case of a jump transition, the method did not use the symbol of that transition. Instead, it incorrectly used the first symbol of the input word. As a result, words such as `{'a', 'a'}` correctly passed a `DONT_CARE` jump transition, but words such as `{'a', 'b'}` were incorrectly rejected. Moreover, this bug allowed any word beginning with `DONT_CARE` to be accepted by any jump transition, which is incorrect. For example, the word `{DONT_CARE, 'b'}` was accepted by a jump transition over the repeated symbol `'a'` because every comparison was made against the first symbol of the word (`DONT_CARE`) instead of the symbol on the transition.
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July 14, 2026 13:39
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Automated sync of 'master' into 'devel' after release. Auto-merged when all checks pass.