On 05/12/2014 10:48, Hans Hagen wrote: > On 12/4/2014 10:56 PM, Joseph Wright wrote: > >> this deliberate or a bug? If it's deliberate, what's the reasoning: it's >> tricky for doing a diff against pdfTeX log. > > btw, you cannot expect luatex to be byte-by-byte log compatible ... we > might as wel decide to rewrite parts of the log system some time > > Hans
Each engine is different, and indeed the reason we have various engines is for functionality changes: it's not realistic to expect the logs to be the same. When checking code between engines what is useful is knowing what to expect to be different because of the engines so you can focus on any real issues. Engine differences can be normalised out to some extent, which can then be combined with some notes for places that's not the situation. To do that it's useful to have an idea about when the changes are deliberate: I've raised on the list precisely because I don't know what the expectation is here. With other log differences some have turned out to be deliberate and other cases not. -- Joseph Wright
