Is format specification in fmt supported?

[zhuzhzh]

The fmt library supports numerous format specifications outlined in its syntax documentation (https://fmt.dev/11.0/syntax/#format-specification-mini-language), whereas Quill lacks these formatting capabilities.

For ecample, outputting numbers with zero-padded 4-digit width in hex (e.g., 0x0030 instead of 48), is there a simpler method than implementing a custom formatter? While one approach could be pre-formatting values using fmt and then passing the formatted strings to Quill, I'm concerned about the potential performance overhead of this dual-step process.

[odygrd]

the specification mini language is supported, please try it inside a statement e.g.

LOG_INFO(logger, "{:>30}", std::string_view {"right aligned"});

[zhuzhzh]

It's my fault. I tested it with two wrong writing.
LOG_INFO(logger, "{:.2f}", 48); // should be 48.0
LOG_INFO(logger, "{:04#x}", vec_data); // should be {::#04x}

With the correct format specification, it works now.