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lib/vsprintf: Allow to override ISO 8601 date and time separator

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ISO 8601 defines 'T' as a separator between date and time. Though,
some ABIs use time and date with ' ' (space) separator instead.

Add a flavour to the %pt specifier to override default separator.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20210511153958.34527-1-andriy.shevchenko@linux.intel.com
This commit is contained in:
Andy Shevchenko
2021-05-11 18:39:55 +03:00
committed by Petr Mladek
parent 7f3d08b255
commit 20bc8c1e97
3 changed files with 28 additions and 6 deletions
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7
Documentation/core-api/printk-formats.rst
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@@ -514,9 +514,10 @@ Time and date
::
%pt[RT] YYYY-mm-ddTHH:MM:SS
%pt[RT]s YYYY-mm-dd HH:MM:SS
%pt[RT]d YYYY-mm-dd
%pt[RT]t HH:MM:SS
%pt[RT][dt][r]
%pt[RT][dt][r][s]
For printing date and time as represented by::
@@ -528,6 +529,10 @@ in human readable format.
By default year will be incremented by 1900 and month by 1.
Use %pt[RT]r (raw) to suppress this behaviour.
The %pt[RT]s (space) will override ISO 8601 separator by using ' ' (space)
instead of 'T' (Capital T) between date and time. It won't have any effect
when date or time is omitted.
Passed by reference.
struct clk