gajus / gajus/fast-printf

Enhancement Request - support conversion of hex to uppercase - printf("%4X", 0xffff) => "FFFF"

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TypeScript
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Description

Current code supports conversion to hexadecimal as lowercase but the C/C++ specification also support 'X' token. Would be nice if module could also support this.

https://learn.microsoft.com/en-us/cpp/c-runtime-library/format-specification-syntax-printf-and-wprintf-functions?view=msvc-170

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