#fmt handles $.4f incorrectly when the number is round

[bzbarsky]

Testcase:

use std;
fn main() {
let i = 5.0;
std::io::println(#fmt("hello world %.4f!", i));
}

This should print "hello world 5.0000!" but prints "hello world 5!"

[jdm]

This looks like it's covered by #1375.

[bzbarsky]

Not quite. That bug is about default precision; one can argue that the default should be "as few digits as needed", as some people are arguing in that issue. This bug is about the case when the precision is explicitly specified.

It's possible that a fix for the other would fix this one, of course. Any way to mark issues as depending on each other?

[brson]

Fixed by 6527fc3

[graydon]

Re: bug dependencies, no. Another thing they felt was too much trouble to add to a tracker.