diff --git a/docs/ldml/tr35.md b/docs/ldml/tr35.md index 1a33b28d0d5..e89cb4e2439 100644 --- a/docs/ldml/tr35.md +++ b/docs/ldml/tr35.md @@ -4379,10 +4379,32 @@ Updates to [LDML Conformance](#Conformance) including ### Message Format Modifications -Significant updates to [Message Format](tr35-messageFormat.md#Contents) -- Removed all of the reserved and private use syntax constructs, simplifying the grammar. -- Changed the structure of the .match (selector) to require use of local or input declarations. This is a breaking change for existing messages. -- Added support for bidirectional isolates and marks, and clarified whitespace handling to better enable messages that contains right-to-left identifiers and text. +[MessageFormat](tr35-messageFormat.md#Contents) was promoted to Final Candidate, +including the following changes from version 46.0: +- Add ‘resolved values’ and ‘function handler’ sections to formatting. +- Apply NFC normalization as a requirement for selector key comparison. +- Permit unpaired surrogate code points in text literals. +- Define _option resolution_ and require order of _options_ to be insignificant. +- Clarify eager vs. lazy evaluation. +- Clarify initialization of the base string direction for a _message_ or a _function_. +- Clarify matching of number values in message selection. +- Better define "implementation-defined" literal and type values. +- Require bidi isolation when `u:dir` is set and provide for ignoring isolation. + +The [MessageFormat] default function set was also significantly updated, +including these changes: +- Provide normative guidance on function, option, and option-value implementation. +- Define REQUIRED and RECOMMENDED functions and options in the default function set. +- Limit the _option_ values that can be defined by the specification in the future. +- Define function composition for number, date/time, and string functions. +- Fix the values allowed for the `useGrouping` _option_ of the `:integer` function. +- Define the `:currency` _function_ in the default function set. +- Define the `:math` _function_ in the default function set, supporting the MessageFormat 1 ‘offset’ feature. +- Add `calendar` and `numberingSystem` _options_ to date/time _functions_. +- Add `hour12` date/time override _option_. +- Add `timezone` as a Proposed REQUIRED _option_ for date/time functions. +- Add `:unit` as a Proposed RECOMMENDED _function_. +- Add `:u` _options_ to the `:u` _namespace_. ### Date Modifications - Added a tech preview section on [semantic skeletons](tr35-dates.md#Semantic_Skeletons), allowing for less data and faster performance in formatting dates. @@ -4414,7 +4436,7 @@ Click on **Previous Version** in the header until you get to the desired version * * * -© 2024–2024 Unicode, Inc. +© 2001–2025 Unicode, Inc. This publication is protected by copyright, and permission must be obtained from Unicode, Inc. prior to any reproduction, modification, or other use not permitted by the [Terms of Use](https://www.unicode.org/copyright.html). Specifically, you may make copies of this publication and may annotate and translate it solely for personal or internal business purposes and not for public distribution,