fix: populate timezone data when formatting time #3203
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The `jv2tm` function was zeroing fields of `struct tm` that were not specified by the standard. However, depending on the libc this produced incorrect timezone data when used together with formatting functions. This change tries to fill the timezone data using either `mktime`, `timegm`, or manually.
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The
jv2tmfunction was zeroing fields ofstruct tmthat were not specified by the standard. However, depending on the libc this produced incorrect timezone data when used together with formatting functions. This change tries to fill the timezone data using eithermktime,timegm, or manually.Fixes #2475 and #2429.
Example:
TZ=Asia/Tokyo jq -rn '1731627341 | strflocaltime("%F %T %z %Z"), strftime("%F %T %z %Z")'Before:
After: