Project rules can not access mentioned files

Bug Reports
1

In new project rules it is supposedly possible to include other files via mention.

This is my database.mdc:

---
description: Datenbankstruktur je nach Bereich
globs: *.cpp
---
Lagerverwaltung, Einkauf - [Datenbank-Lager-Einkauf.txt](mdc:.cursor/rules/Datenbank-Lager-Einkauf.txt)
Kundenverwaltung - [Datenbank-CRM.txt](mdc:.cursor/rules/Datenbank-CRM.txt)
Produktion, Produktionsplanung, Ressourcenplanung - [Datenbank-Produktion.txt](mdc:.cursor/rules/Datenbank-Produktion.txt)
Projektverwaltung, Projektmanagement - [Datenbank-Projekt.txt](mdc:.cursor/rules/Datenbank-Projekt.txt)
FIBU, Buchhaltung - [Datenbank-FIBU.txt](mdc:.cursor/rules/Datenbank-FIBU.txt)
POS, Kasse - [Datenbank-POS-Kasse.txt](mdc:.cursor/rules/Datenbank-POS-Kasse.txt)
Verkauf, Angebot, Auftrag, Lieferschein, Rechnung - [Datenbank-Verkauf.txt](mdc:.cursor/rules/Datenbank-Verkauf.txt)
Lagerverwaltung mit Chargen und Seriennummern - [Datenbank-Chargen-Seriennummer.txt](mdc:.cursor/rules/Datenbank-Chargen-Seriennummer.txt)
Vermietung - [Datenbank-Mietvertrag.txt](mdc:.cursor/rules/Datenbank-Mietvertrag.txt)
Qualitätskontrolle mit Proben - [Datenbank-Proben.txt](mdc:.cursor/rules/Datenbank-Proben.txt)
Wartung - [Datenbank-Wartung.txt](mdc:.cursor/rules/Datenbank-Wartung.txt)
Zeiterfassung - [Datenbank-Zeiterfassung.txt](mdc:.cursor/rules/Datenbank-Zeiterfassung.txt)

When I use it in the prompt (@database.mdc)

The Composer answers like this:

I see that the database rules are mentioned in database.mdc, but the actual content of the referenced files (like Datenbank-Verkauf.txt) is not available.

I can mention the txt file directly, and then the Composer can access it.

Here is the request-id: 98be8781-7d71-4e48-aefd-6648bf6265d3

2

I just found the answer - the other files must also be mdc. I hope this helps someone.

2 Likes
3

Ok, now I have added all my documentation files in form of mdc, the Composer refuses to find them.

They are parked under .cursor/rules

Screenshot 2025-02-11 225246
Screenshot 2025-02-11 225246285Ă—373 7.99 KB

Here is the request id: 20980792-4b05-4e7e-886f-c4967245ab90

4

Can you see them in your Project Rules section in your Cursor settings?

5

Yes, they were visible there.
I believe I have found the cause. All the files together are very large. It seems they are not indexed, like the codebase, but taken in their entirety as the context.

The effect was, that the genai got extremely stupid, and could not answer even the most simple questions.

My solution is to put those files on the internet, and add them to the project as @docs. I have not done that yet, but am expecting this to be the right solution.

6

I believe hyphens were not correctly supported in this case, but we have added some UI in v0.46 (rolling out today or tomorrow to all users), which shows what rules are available and in use for each prompt.

1 Like