`"c"` format does not work as expected about d3-format

[Fil]

In C, python and PHP printf("%c", 97) give "a". In

d3-format/src/formatTypes.js

Line 8 in ff87892

"c": (x) => x + "",

it gives "97".
The tests are only for a 1-char string input, so it looks like an oversight.

[mbostock]

The code is doing what is intended here, but it looks like we forgot to update the documentation accordingly. This was changed in e247671.

[ethanabrooks]

I see. Is there a way to do achieve the same effect as python's chr function with d3-format?

[mbostock]

Is there a way to do achieve the same effect as python's chr function with d3-format?

Not currently, but you could use String.fromCharCode(97) in conjunction with type c.