---
- branch: MAIN
  date: Thu Feb  8 02:53:53 UTC 2024
  files:
  - new: '1.5'
    old: '1.4'
    path: src/usr.bin/touch/Makefile
    pathrev: src/usr.bin/touch/Makefile@1.5
    type: modified
  - new: '1.37'
    old: '1.36'
    path: src/usr.bin/touch/touch.c
    pathrev: src/usr.bin/touch/touch.c@1.37
    type: modified
  id: 20240208T025353Z.9ee1759e2ec6daf8d0783578c1e7115a60e8e7e9
  log: "Properly implement the POSIX format -d option.\n\nPreviously we have hacked
    that using parsedate(3) - but parsedate()\nreturns a time_t and consequently while
    it \"handles\" fractional seconds,\nall that meant (all it really can mean) is
    that they're ignored.\n\nThe POSIX spec expects that (at least if the filesystem
    supports them)\nfractional seconds can be set using the -d option.\n\nHandle that
    by first attempting to parse the -d arg as a posix format\ndate-time string (using
    a reasonably strict parser), and if that fails,\nthen fall back on parsedate(3)
    to parse the arg.\n\nIf the posix format parse succeeds, the result will be the
    same as\nparsedate(3) would return for the same string - except any fractional\nseconds
    will be handled properly.   If it fails, then nothing changes\nfrom what we currently
    do.\n\nNote the POSIX string is\n\tYYYY-MM-DDThh:mm:ss[.frac][Z]\nwhere YYYY is
    (at least) 4 digits (leading 0's are acceptable if\nyou really must!) all the
    MM DD hh mm ss fields are exactly 2\ndigits, T is either 'T' or ' ', '.' is either
    itself, or ',',\nand 'frac' is one or more digits.  Z (if given) is 'Z'.  The\n[.,]frac
    and Z fields are optional.   Specify a time in a\nslight shorthand like 2024-2-8T7:44:20
    \ and the POSIX parse\nwill fail, leaving parsedate() to handle that (which it
    should).\nBut any fractional seconds which were given would be ignored.\n\nDoc
    update coming - note the doc will call the YYYY field CCYY\ninstead, that's just
    a convenience to make other parts of what\nis there make more sense - it is still
    one 4 (or more) digit field.\n\nThis should be an almost invisible change.\n"
  module: src
  subject: 'CVS commit: src/usr.bin/touch'
  unixtime: '1707360833'
  user: kre