# Re: \[PATCH v1\] config: add '--sources' option to print the source of a config value

- From: Jeff King \<hidden\>
- Date: 2016-06-15 23:08:09 
- List: git
- Page: https://ratatoskr.run/git/2016/06/7671973
- Thread: https://ratatoskr.run/git/2016/06/7671771/t.md

```text
On Sun, Feb 07, 2016 at 08:44:50PM +0100, Lars Schneider wrote:

> > Are there any other reasons why current_config_filename() would return
> > NULL, besides command-line config? I don't think so. It looks like we
> > can read config from stdin, but we use the token "<stdin>" there for the
> > name field (another ambiguity!).
> During my testing I haven't found any other case either. To be honest
> I didn't know the "stdin" way to set the config! I added a test case for 
> that, too!

I didn't remember it either, until I peeked at the code trying to answer my
own question. Ironically, I appear to have been involved in reviewing
the patches that added it. :-/

-Peff
```