`%c` format specifier is not documented with its friends

[sogaiu]

The "Panicking" section of "Writing C Functions" has a nice table of format specifiers (used by janet_panic* and elsewhere).

I don't see %c in the list though it is used in a few places, e.g.:

janet_panicf("invalid flag %c, expected a, t, d, e, u, y, i, or p", view.bytes[i]);

via: https://github.com/janet-lang/janet/blob/79807bf2aba035525f99003a7c3df6a30aac0691/src/core/fiber.c#L521

I'm willing to make a PR, but don't know what to put for the "Description" and "Type" columns.

Any hints?

[pepe]

Just a wild guess from the usage in code, but I would say char. No authority, just trying to add indices to your search.

Via https://github.com/janet-lang/janet/blob/79807bf2aba035525f99003a7c3df6a30aac0691/src/core/capi.c#L384

[sogaiu]

Thanks for taking a look.

There are three column values in the table. The value for the first column is likely %c.

The question is what are good values for the other 2 columns.

As you mentioned, I think it's possible char might be involved somehow, but my guess is it's not likely to be the answer for both of the remaining columns having looked at what's here in the code and compared to what's in the table. I think %c itself may be handled above the aforementioned code.

Does that make sense?

[pepe]

I guess it does. Thx