Adding a different color/icon for an error in a file which comes from an imported file and not directly from a file

[OasisLead]

Is your request related to a problem? Please describe.
When you have many files in a single project (ex: MAELIA), where most files import each other, when one file has an error, each file connected to it has an error, but it is impossible to know distinctly from which file the error comes except by search file by file until finding the right file.

Describe the improvement you'd like
We could make a different display for files for which the error comes from the import of another file and file which have an error inside their code.

[lesquoyb]

Now the red color is only present on the file that contains the error