Fix format width calculation in no_std
environments
#1196
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When disabling the
std
feature, the calculation of the formatted width of the values is skipped and replaced by a fixed number (i.e. 4). This causes the output to be wrongly formatted when printing. I fixed this issue by implementing a custom writer, that implements thefmt::Write
trait, and counts the number of character in thewrite_str()
method, instead of printing them.How to reproduce the issue
Cargo.toml
main.rs
Output:
How to test the fix
Cargo.toml
main.rs
Output: