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Documentation to the above changes (bug 10871).
[BZ #10871] * manual/locale.texi: Document ALTMON_1..12 constants for nl_langinfo. Specify when to use ALTMON instead of MON. * manual/time.texi (strftime, strptime): Document GNU extension permitting O modifier with %B and %b. Specify when to use %OB instead of %B. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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@ -1,3 +1,12 @@
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2018-01-22 Rafal Luzynski <digitalfreak@lingonborough.com>
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[BZ #10871]
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* manual/locale.texi: Document ALTMON_1..12 constants for
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nl_langinfo. Specify when to use ALTMON instead of MON.
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* manual/time.texi (strftime, strptime): Document GNU extension
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permitting O modifier with %B and %b. Specify when to use
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%OB instead of %B.
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2018-01-22 Rafal Luzynski <digitalfreak@lingonborough.com>
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[BZ #10871]
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24
NEWS
24
NEWS
@ -69,6 +69,30 @@ Major new features:
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collation ordering. Previous glibc versions used locale-specific
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ordering, the change might break systems that relied on that.
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* Support for two grammatical forms of month names has been added.
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In a call to strftime, the "%B" and "%b" format specifiers will now
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produce the grammatical form required when the month is used as part
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of a complete date. New "%OB" and "%Ob" specifiers produce the form
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required when the month is named by itself. For instance, in Greek
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and in many Slavic and Baltic languages, "%B" will produce the month
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in genitive case, and "%OB" will produce the month in nominative case.
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In a call to strptime, "%B", "%b", "%h", "%OB", "%Ob", and "%Oh"
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are all valid and will all accept any known form of month
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name---standalone or complete, abbreviated or full. In a call to
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nl_langinfo, the query constants MON_1..12 and ABMON_1..12 return
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the strings used by "%B" and "%b", respectively. New query
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constants ALTMON_1..12 and _NL_ABALTMON_1..12 return the strings
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used by "%OB" and "%Ob", respectively.
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In a locale definition file, use "alt_mon" and "ab_alt_mon" to
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define the strings for %OB and %Ob, respectively; these have the
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same syntax as "mon" and "ab_mon".
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This feature is currently a GNU extension, but it is expected to
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be added to the next revision of POSIX, and it is also already
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available on some BSD-derived operating systems.
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Deprecated and removed features, and other changes affecting compatibility:
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* Support for statically linked applications which call dlopen is deprecated
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@ -923,7 +923,7 @@ corresponds to Sunday.
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@itemx DAY_5
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@itemx DAY_6
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@itemx DAY_7
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Similar to @code{ABDAY_1} etc., but here the return value is the
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Similar to @code{ABDAY_1} etc.,@: but here the return value is the
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unabbreviated weekday name.
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@item ABMON_1
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@itemx ABMON_2
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@ -937,7 +937,8 @@ unabbreviated weekday name.
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@itemx ABMON_10
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@itemx ABMON_11
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@itemx ABMON_12
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The return value is abbreviated name of the month. @code{ABMON_1}
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The return value is the abbreviated name of the month, in the grammatical
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form used when the month forms part of a complete date. @code{ABMON_1}
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corresponds to January.
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@item MON_1
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@itemx MON_2
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@ -951,8 +952,27 @@ corresponds to January.
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@itemx MON_10
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@itemx MON_11
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@itemx MON_12
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Similar to @code{ABMON_1} etc., but here the month names are not abbreviated.
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Similar to @code{ABMON_1} etc.,@: but here the month names are not abbreviated.
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Here the first value @code{MON_1} also corresponds to January.
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@item ALTMON_1
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@itemx ALTMON_2
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@itemx ALTMON_3
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@itemx ALTMON_4
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@itemx ALTMON_5
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@itemx ALTMON_6
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@itemx ALTMON_7
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@itemx ALTMON_8
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@itemx ALTMON_9
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@itemx ALTMON_10
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@itemx ALTMON_11
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@itemx ALTMON_12
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Similar to @code{MON_1} etc.,@: but here the month names are in the grammatical
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form used when the month is named by itself. The @code{strftime} functions
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use these month names for the format specifier @code{OB}.
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Note that not all languages need two different forms of the month names,
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so the strings returned for @code{MON_@dots{}} and @code{ALTMON_@dots{}}
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may or may not be the same, depending on the locale.
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@item AM_STR
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@itemx PM_STR
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The return values are strings which can be used in the representation of time
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@ -1346,8 +1346,13 @@ example, @code{%Ex} might yield a date format based on the Japanese
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Emperors' reigns.
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@item O
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Use the locale's alternate numeric symbols for numbers. This modifier
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applies only to numeric format specifiers.
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With all format specifiers that produce numbers: use the locale's
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alternate numeric symbols.
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With @code{%B} and @code{%b}: use the grammatical form for month names
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that is appropriate when the month is named by itself, rather than
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the form that is appropriate when the month is used as part of a
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complete date. This is a GNU extension.
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@end table
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If the format supports the modifier but no alternate representation
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@ -1365,13 +1370,21 @@ The abbreviated weekday name according to the current locale.
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The full weekday name according to the current locale.
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@item %b
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The abbreviated month name according to the current locale.
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The abbreviated month name according to the current locale, in the
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grammatical form used when the month is part of a complete date.
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As a GNU extension, the @code{O} modifier can be used (@code{%Ob})
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to get the grammatical form used when the month is named by itself.
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@item %B
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The full month name according to the current locale.
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The full month name according to the current locale, in the
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grammatical form used when the month is part of a complete date.
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As a GNU extension, the @code{O} modifier can be used (@code{%OB})
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to get the grammatical form used when the month is named by itself.
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Using @code{%B} together with @code{%d} produces grammatically
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incorrect results for some locales.
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Note that not all languages need two different forms of the month
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names, so the text produced by @code{%B} and @code{%OB}, and by
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@code{%b} and @code{%Ob}, may or may not be the same, depending on
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the locale.
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@item %c
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The preferred calendar time representation for the current locale.
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@ -1778,8 +1791,14 @@ the full name.
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@item %b
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@itemx %B
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@itemx %h
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The month name according to the current locale, in abbreviated form or
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the full name.
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A month name according to the current locale. All three specifiers
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will recognize both abbreviated and full month names. If the
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locale provides two different grammatical forms of month names,
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all three specifiers will recognize both forms.
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As a GNU extension, the @code{O} modifier can be used with these
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specifiers; it has no effect, as both grammatical forms of month
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names are recognized.
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@item %c
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The date and time representation for the current locale.
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