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Make seconds optional in Date-Time and Time #894

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Jul 30, 2022
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1 change: 1 addition & 0 deletions CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@

* Clarify where and how dotted keys define tables.
* Add new `\e` shorthand for the escape character.
* Seconds in Date-Time and Time values are now optional.
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## 1.0.0 / 2021-01-11

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2 changes: 1 addition & 1 deletion toml.abnf
Original file line number Diff line number Diff line change
Expand Up @@ -175,7 +175,7 @@ time-secfrac = "." 1*DIGIT
time-numoffset = ( "+" / "-" ) time-hour ":" time-minute
time-offset = "Z" / time-numoffset

partial-time = time-hour ":" time-minute ":" time-second [ time-secfrac ]
partial-time = time-hour ":" time-minute [ ":" time-second [ time-secfrac ] ]
full-date = date-fullyear "-" date-month "-" date-mday
full-time = partial-time time-offset

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20 changes: 20 additions & 0 deletions toml.md
Original file line number Diff line number Diff line change
Expand Up @@ -553,6 +553,14 @@ time with a space character (as permitted by RFC 3339 section 5.6).
odt4 = 1979-05-27 07:32:00Z
```

One exception to RFC 3339 is permitted: seconds may be omitted, in which case
`:00` will be assumed. The offset immediately follows the minutes.

```toml
odt5 = 1979-05-27 07:32Z
odt6 = 1979-05-27 07:32-07:00
```

Millisecond precision is required. Further precision of fractional seconds is
implementation-specific. If the value contains greater precision than the
implementation can support, the additional precision must be truncated, not
Expand All @@ -572,6 +580,12 @@ ldt1 = 1979-05-27T07:32:00
ldt2 = 1979-05-27T00:32:00.999999
```

Seconds may be omitted, in which case `:00` will be assumed.

```toml
ldt3 = 1979-05-27T07:32
```

Millisecond precision is required. Further precision of fractional seconds is
implementation-specific. If the value contains greater precision than the
implementation can support, the additional precision must be truncated, not
Expand Down Expand Up @@ -601,6 +615,12 @@ lt1 = 07:32:00
lt2 = 00:32:00.999999
```

Seconds may be omitted, in which case `:00` will be assumed.

```toml
lt3 = 07:32
```

Millisecond precision is required. Further precision of fractional seconds is
implementation-specific. If the value contains greater precision than the
implementation can support, the additional precision must be truncated, not
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