diff options
Diffstat (limited to 'manual/time.texi')
| -rw-r--r-- | manual/time.texi | 45 |
1 files changed, 23 insertions, 22 deletions
diff --git a/manual/time.texi b/manual/time.texi index eb5a36183e..e16a7294a2 100644 --- a/manual/time.texi +++ b/manual/time.texi @@ -1143,7 +1143,8 @@ the result is written right adjusted and space padded to the given size. An optional modifier can follow the optional flag and width -specification. The modifiers, which are POSIX.2 extensions, are: +specification. The modifiers, which were first standardized by +POSIX.2-1992 and by @w{ISO C99}, are: @table @code @item E @@ -1185,7 +1186,7 @@ The preferred calendar time representation for the current locale. The century of the year. This is equivalent to the greatest integer not greater than the year divided by 100. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %d The day of the month as a decimal number (range @code{01} through @code{31}). @@ -1193,19 +1194,19 @@ The day of the month as a decimal number (range @code{01} through @code{31}). @item %D The date using the format @code{%m/%d/%y}. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %e The day of the month like with @code{%d}, but padded with blank (range @code{ 1} through @code{31}). -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %F The date using the format @code{%Y-%m-%d}. This is the form specified in the @w{ISO 8601} standard and is the preferred form for all uses. -This format is a @w{ISO C99} extension. +This format was first standardized by @w{ISO C99} and by POSIX.1-2001. @item %g The year corresponding to the ISO week number, but without the century @@ -1213,7 +1214,7 @@ The year corresponding to the ISO week number, but without the century as @code{%y}, except that if the ISO week number (see @code{%V}) belongs to the previous or next year, that year is used instead. -This format was introduced in @w{ISO C99}. +This format was first standardized by @w{ISO C99} and by POSIX.1-2001. @item %G The year corresponding to the ISO week number. This has the same format @@ -1221,14 +1222,14 @@ and value as @code{%Y}, except that if the ISO week number (see @code{%V}) belongs to the previous or next year, that year is used instead. -This format was introduced in @w{ISO C99} but was previously available -as a GNU extension. +This format was first standardized by @w{ISO C99} and by POSIX.1-2001 +but was previously available as a GNU extension. @item %h The abbreviated month name according to the current locale. The action is the same as for @code{%b}. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %H The hour as a decimal number, using a 24-hour clock (range @code{00} through @@ -1262,7 +1263,7 @@ The minute as a decimal number (range @code{00} through @code{59}). @item %n A single @samp{\n} (newline) character. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %p Either @samp{AM} or @samp{PM}, according to the given time value; or the @@ -1278,19 +1279,19 @@ Either @samp{am} or @samp{pm}, according to the given time value; or the corresponding strings for the current locale, printed in lowercase characters. Noon is treated as @samp{pm} and midnight as @samp{am}. -This format was introduced in @w{ISO C99} but was previously available -as a GNU extension. +This format is a GNU extension. @item %r The complete calendar time using the AM/PM format of the current locale. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. +In the POSIX locale, this format is equivalent to @code{%I:%M:%S %p}. @item %R The hour and minute in decimal numbers using the format @code{%H:%M}. -This format was introduced in @w{ISO C99} but was previously available -as a GNU extension. +This format was first standardized by @w{ISO C99} and by POSIX.1-2001 +but was previously available as a GNU extension. @item %s The number of seconds since the epoch, i.e., since 1970-01-01 00:00:00 UTC. @@ -1304,18 +1305,18 @@ The seconds as a decimal number (range @code{00} through @code{60}). @item %t A single @samp{\t} (tabulator) character. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %T The time of day using decimal numbers using the format @code{%H:%M:%S}. -This format is a POSIX.2 extension. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %u The day of the week as a decimal number (range @code{1} through @code{7}), Monday being @code{1}. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %U The week number of the current year as a decimal number (range @code{00} @@ -1334,7 +1335,7 @@ The week before week @code{01} of a year is the last week (@code{52} or @code{53}) of the previous year even if it contains days from the new year. -This format is a POSIX.2 extension and also appears in @w{ISO C99}. +This format was first standardized by POSIX.2-1992 and by @w{ISO C99}. @item %w The day of the week as a decimal number (range @code{0} through @@ -1365,10 +1366,10 @@ before the year @code{1} are numbered @code{0}, @code{-1}, and so on. @code{-0600} or @code{+0100}), or nothing if no time zone is determinable. -This format was introduced in @w{ISO C99} but was previously available -as a GNU extension. +This format was first standardized by @w{ISO C99} and by POSIX.1-2001 +but was previously available as a GNU extension. -A full @w{RFC 822} timestamp is generated by the format +In the POSIX locale, a full @w{RFC 822} timestamp is generated by the format @w{@samp{"%a, %d %b %Y %H:%M:%S %z"}} (or the equivalent @w{@samp{"%a, %d %b %Y %T %z"}}). |