If you ask SemanticDiff to compute the differences for an unsupported file format, you will get a “fallback diff”. This is a special type of diff that uses the same algorithms as all our other diffs, but without taking the structure of the file into account. Each line is simply treated as a long text token.

In practice, you will get a standard text diff with moved line detection. You can recognize a fallback by such a warning above the diff content: