在Git源代码的date.c文件中,我注意到特殊时间名称的以下结构:
static const struct special {
const char *name;
void (*fn)(struct tm *, struct tm *, int *);
} special[] = {
{ "yesterday", date_yesterday },
{ "noon", date_noon },
{ "midnight", date_midnight },
{ "tea", date_tea },
{ "PM", date_pm },
{ "AM", date_am },
{ "never", date_never },
{ "now", date_now },
{ NULL }
};
我了解其中大多数的实用程序,但是为什么要花点时间(估计为17:00小时)?这只是一种Easter egg吗?
答案 0 :(得分:66)
此提交可能会为您提供一个为什么包含它的线索: https://github.com/git/git/commit/a8aca418d6484400d6804e22717bd49ca06c28e9
我认为最初建议这只是个玩笑,但实际上是为了向用户展示自己包括自定义时间/日期段的能力而实现的:
On Fri, 18 Nov 2005, David Roundy wrote:
> Don't forget "high noon"! (and perhaps "tea time"?) :)
Done.
[torvalds@g5 git]$ ./test-date "now" "midnight" "high noon" "tea-time"
now -> bad -> Wed Dec 31 16:00:00 1969
now -> Fri Nov 18 08:50:54 2005
midnight -> bad -> Wed Dec 31 16:00:00 1969
midnight -> Fri Nov 18 00:00:00 2005
high noon -> bad -> Wed Dec 31 16:00:00 1969
high noon -> Thu Nov 17 12:00:00 2005
tea-time -> bad -> Wed Dec 31 16:00:00 1969
tea-time -> Thu Nov 17 17:00:00 2005
Thanks for pointing out tea-time.
This is also written to easily extended to allow people to add their own
important dates like Christmas and their own birthdays.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>