Hi,
Good suggestion!
We have started to implement this feature.
Before adding this to SyntaxChecker#checkSyntax we would like to test it.
So we've slightly changed the information PlantUML displays when there is a syntax error.
We now provide the complete file path (and correct line number) in the error description.
And if the error is in some included file, we also provide the name of this file.
If the new printed data are relevant for you, we will add them in the API.
Note that we are not sure whether it's a good idea to add the complete file path on the generated image.
It may be usefull for people running PlantUML from the command line.
But for people using PlantUML as a plugin, we will then display the name and path of a probably temporary file used by this plugin. So it may be confusing for users.
Any though?
Thanks again!