[gnome-shell] calendar Preparing for genitive/nominative months

[Florian Müllner <fmuellner src gnome org>]

commit a647445b952235581b4ffa7e9c9aa38c26532406
Author: Rafal Luzynski <digitalfreak lingonborough com>
Date:   Thu Feb 8 12:47:26 2018 +0100

    calendar Preparing for genitive/nominative months
    
    glibc 2.27 introduced new format specifiers for the month names.
    It's obligatory to use them in several languages already and it's
    encouraged to use them for all languages because it is not destructive
    for any language. As more languages are expected to follow this
    standard it's better to use the "%OB" format specifier now so it will
    start working correctly automatically.
    See also: https://sourceware.org/bugzilla/show_bug.cgi?id=10871
    
    This standard has been also working in BSD and OS X since 1990s,
    if anyone tries to use gnome-shell in these systems.
    
    Note: This will not work correctly with glibc < 2.27, there is no
    detection whether the system is old or new.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780957

 js/ui/calendar.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/calendar.js b/js/ui/calendar.js
index 286a24fe0..8261f40a5 100644
--- a/js/ui/calendar.js
+++ b/js/ui/calendar.js
@@ -376,15 +376,20 @@ var Calendar = new Lang.Class({
         /**
          * Translators: The header displaying just the month name
          * standalone, when this is a month of the current year.
+         * "%OB" is the new format specifier introduced in glibc 2.27,
+         * in most cases you should not change it.
          */
-        this._headerFormatWithoutYear = _('%B');
+        this._headerFormatWithoutYear = _('%OB');
         /**
          * Translators: The header displaying the month name and the year
          * number, when this is a month of a different year.  You can
          * reorder the format specifiers or add other modifications
          * according to the requirements of your language.
+         * "%OB" is the new format specifier introduced in glibc 2.27,
+         * in most cases you should not use the old "%B" here unless you
+         * absolutely know what you are doing.
          */
-        this._headerFormat = _('%B %Y');
+        this._headerFormat = _('%OB %Y');
 
         // Start off with the current date
         this._selectedDate = new Date();