CLDR-19186 Update MessageFormat for v49 (#5278)

Author: eemeli

docs/ldml/tr35-messageFormat.md

@@ -190,7 +190,6 @@ The LDML specification is divided into the following parts:
 * [Unicode Namespace](#unicode-namespace)
   * [Unicode Namespace Options](#unicode-namespace-options)
     * [`u:id`](#uid)
-    * [`u:locale`](#ulocale)
     * [`u:dir`](#udir)
 * [Interchange Data Model](#interchange-data-model)
   * [Message Model](#message-model)
@@ -2915,7 +2914,7 @@ The function `:string` has no _options_.
 > For example:
 >
 > ```
-> {$s :string u:dir=ltr u:locale=fr-CA}
+> {$s :string u:dir=ltr u:id=my-string}
 > ```
 
 ##### `:string` Resolved Value
@@ -3210,12 +3209,8 @@ The _function_ `:offset` performs selection as described in [Number Selection](#
 
 #### The `:currency` function
 
-> [!IMPORTANT]
-> The _function_ `:currency` has a status of **Draft**.
-> It is proposed for inclusion in a future release of this specification and is not Stable.
-
 The _function_ `:currency` is a _formatter_ for currency values,
-which are a specialized form of numeric formatting.
+which is a specialized form of numeric formatting.
 
 ##### `:currency` Operands
 
@@ -3387,10 +3382,6 @@ together with the resolved options' values.
 
 #### The `:percent` function
 
-> [!IMPORTANT]
-> The _function_ `:percent` has a status of **Draft**.
-> It is proposed for inclusion in a future release of this specification and is not Stable.
-
 The function `:percent` is a selector and formatter for percent values.
 
 ##### `:percent` Operands
@@ -4232,48 +4223,6 @@ or can be resolved to a string without error.
 For other values, a _Bad Option_ error is emitted
 and the `u:id` _option_ and its _option value_ are ignored.
 
-#### `u:locale`
-
-> [!IMPORTANT]
-> This _option_ has a status of **Draft**.
-> It is proposed for inclusion in a future release and is not Stable.
-
-Implementations MAY support this option.
-
-Replaces the _locale_ defined in the _function context_ for this _expression_.
-
-A comma-delimited list consisting of
-well-formed [BCP 47](https://www.rfc-editor.org/rfc/bcp/bcp47.txt)
-language tags,
-or an implementation-defined list of such tags.
-
-If this _option_ is set on _markup_, a _Bad Option_ error is emitted
-and the `u:locale` _option_ and its _option value_ are ignored.
-
-During processing, the `u:locale` _option_
-MUST be removed from the resolved mapping of _options_
-before calling the _function handler_.
-
-Values matching the following ABNF are always accepted:
-```abnf
-u-locale-option = unicode_bcp47_locale_id *(o "," o unicode_bcp47_locale_id)
-```
-using `unicode_bcp47_locale_id` as defined for
-[Unicode Locale Identifier](tr35.md#unicode_bcp47_locale_id).
-
-Implementations MAY support additional language tags,
-such as private-use or grandfathered tags,
-or tags using `_` instead of `-` as a separator.
-When the value of `u:locale` is set by a _variable_,
-implementations MAY support non-string values otherwise representing locales.
-
-Implementations MAY emit a _Bad Option_ error
-and MAY ignore the `u:locale` _option_ and _option value_ as a whole
-or any of the entries in the list of language tags.
-This might be because the locale specified is not supported
-or because the language tag is not well-formed,
-not valid, or some other reason.
-
 #### `u:dir`
 
 Implementations SHOULD support this option.

docs/ldml/tr35-modifications.md

@@ -31,6 +31,14 @@ This is a partial document, describing only the changes to the LDML since the pr
 <!--
       Note: As of CLDR-18209, ALL changes to the spec require this file, tr35-modifications.md to be modified as well. If you are making a change that doesn't need to be noted, or is already noted, please simply add an HTML comment (such as this one) to the appropriate section.  The comment will not be visible to viewers of the HTML page.
 -->
+
+**Changes in LDML Version 49 (Differences from Version 48.1)**
+
+### MessageFormat
+
+* The `:currency` and `:percent` functions are now Stable, with the same implementations as previously.
+* The `u:locale` option (previously in Draft) is dropped from the specification.
+
 <!-- Bump spec this-version and previous-version due to spec update in 48.1, update spec date -->
 
 **Changes in LDML Version 48.1 (Differences from Version 48)**