GNU awk time functions and TZ handling: does mktime normalize ambiguous DST transition times consistently?
The goal is to determine whether GNU awk's mktime function consistently resolves ambiguous local times that occur during daylight‑saving‑time transitions. This behavior depends on the operating system's TZ database and the underlying C library, so results may vary between different gawk releases and host environments. Specifically, does gawk treat a nonexist
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