diff options
Diffstat (limited to 'zic.8')
| -rw-r--r-- | zic.8 | 29 |
1 files changed, 25 insertions, 4 deletions
@@ -190,7 +190,10 @@ the named file rather than in the standard location. Be more verbose, and complain about the following situations: .RS .PP -The input specifies a link to a link. +The input specifies a link to a link, +something not supported by some older parsers, including +.B zic +itself through release 2022e. .PP A year that appears in a data file is outside the range of representable years. @@ -691,19 +694,37 @@ The .B TARGET field should appear as the .B NAME -field in some zone line. +field in some zone line or as the +.B LINK-NAME +field in some link line. The .B LINK-NAME field is used as an alternative name for that zone; it has the same syntax as a zone line's .B NAME field. +Links can chain together, although the behavior is unspecified if a +chain of one or more links does not terminate in a Zone name. +A link line can appear before the line that defines the link target. +For example: +.sp +.ne 3 +.nf +.in +2m +.ta \w'Zone\0\0'u +\w'Greenwich\0\0'u +Link Greenwich G_M_T +Link Etc/GMT Greenwich +Zone Etc/GMT\0\00\0\0\*-\0\0GMT +.sp +.in +.fi +The two links are chained together, and G_M_T, Greenwich, and Etc/GMT +all name the same zone. .PP Except for continuation lines, lines may appear in any order in the input. However, the behavior is unspecified if multiple zone or link lines -define the same name, or if the source of one link line is the target -of another. +define the same name. .PP The file that describes leap seconds can have leap lines and an expiration line. |