Bug 1804404 - Update l10n documentation due to DTD & .inc removal. r=flod

Differential Revision: https://phabricator.services.mozilla.com/D164047

build/docs/chrome-registration.rst

@@ -32,11 +32,11 @@ Content
 
 Locale
    Localizable applications keep all their localized information in
-   locale providers. This allows translators to plug in a different
+   locale providers and Fluent FTL files, which are handled separately.
+   This allows translators to plug in a different
    chrome package to translate an application without altering the rest
-   of the source code. The two main types of localizable files are
-   `DTD` files and Java-style properties
-   files.
+   of the source code. In a chrome provider, localizable files are mostly
+   Java-style properties files.
 Skin
    A skin provider is responsible for providing a complete set of files
    that describe the visual appearance of the chrome. Typically a skin

build/docs/locales.rst

@@ -260,16 +260,11 @@ The following file formats are known to the l10n tool chains:
 
 Fluent
     Used in Firefox UI, both declarative and programmatically.
-DTD
-    Deprecated. Used in XUL and XHTML.
 Properties
     Used from JavaScript and C++. When used from js, also comes with
-    `plural support <https://developer.mozilla.org/docs/Mozilla/Localization/Localization_and_Plurals>`_.
+    plural support (avoid if possible).
 ini
     Used by the crashreporter and updater, avoid if possible.
-inc
-    Used during builds, for example to create metadata for
-    language packs or bookmarks.
 
 Adding new formats involves changing various different tools, and is strongly
 discouraged.
@@ -291,12 +286,11 @@ a ``key``, and an action. An example like
 .. code-block:: toml
 
   [[filters]]
-      path = "{l}browser/defines.inc"
-      key = "MOZ_LANGPACK_CONTRIBUTORS"
+      path = "{l}calendar/chrome/calendar/calendar-event-dialog.properties"
+      key = "re:.*Nounclass[1-9].*"
       action = "ignore"
 
-indicates that the ``MOZ_LANGPACK_CONTRIBUTORS`` in ``browser/defines.inc``
-is optional.
+indicates that the matching messages in ``calendar-event-dialog.properties`` are optional.
 
 For the legacy ini configuration files, there's a Python module
 ``filter.py`` next to the main ``l10n.ini``, implementing :py:func:`test`, with the following
@@ -359,7 +353,7 @@ As part of the build and other localization tool chains, we run a variety
 of source-based checks. Think of them as linters.
 
 The suite of checks is usually determined by file type, i.e., there's a
-suite of checks for DTD files and one for properties files, etc.
+suite of checks for Fluent files and one for properties files, etc.
 
 Localizations
 -------------

docs/code-quality/coding-style/coding_style_cpp.rst

@@ -297,7 +297,7 @@ Literals
 ~~~~~~~~
 
 Use ``\uXXXX`` unicode escapes for non-ASCII characters. The character
-set for XUL, DTD, script, and properties files is UTF-8, which is not easily
+set for XUL, script, and properties files is UTF-8, which is not easily
 readable.
 
 

docs/contributing/build/artifact_builds.rst

@@ -115,7 +115,7 @@ Things that are supported
 -------------------------
 
 -  Modifying JavaScript, (X)HTML, and CSS resources; and string
-   properties and DTD and FTL files.
+   properties and FTL files.
 -  Modifying Android Java code, resources, and strings.
 -  Running mochitests and xpcshell tests.
 -  Modifying ``Scalars.yaml`` to add Scalar Telemetry (since {{

intl/l10n/docs/glossary.rst

@@ -16,9 +16,6 @@ L10N Glossary
     L10n
         *Numeronym* for Localization, *L*, 10 chars, *n*
 
-    L12y
-        Numeronym for Localizability
-
     l10n-merge
         nick-name for the process of merging ``en-US`` and a particular
         localization into one joint artifact without any missing strings, and

intl/l10n/docs/migrations/index.rst

@@ -18,7 +18,7 @@ would have the adverse effect of forcing contributors to localize hundreds of
 strings from scratch.
 
 `Fluent Migration`_ is a Python library designed to solve this specific problem:
-it allows to migrate legacy translations from `.dtd` and `.properties` files,
+it allows to migrate translations from `.properties` and other legacy file formats,
 not only moving strings and transforming them as needed to adapt to the `FTL`
 syntax, but also replicating "blame" for each string in VCS.
 
@@ -47,7 +47,6 @@ Don’t hesitate to reach out to the l10n-drivers for feedback, help to test or
 write the migration recipes:
 
  - Francesco Lodolo (:flod)
- - Zibi Braniecki (:gandalf)
  - Eemeli Aro (:eemeli)
 
 .. _Fluent: http://projectfluent.org/

intl/l10n/docs/overview.rst

@@ -166,8 +166,7 @@ preferred over short identifiers like :js:`ok` or :js:`ok-button`.
 Localization Systems
 ====================
 
-Gecko has three main localization systems: Fluent and two legacy systems,
-DTD and StringBundle.
+Gecko has two main localization systems: Fluent and StringBundle, a legacy system.
 
 Fluent
 ------
@@ -181,19 +180,18 @@ features including good internationalization model and strong bidirectionality s
 
 To learn more about Fluent, follow the `Fluent for Firefox Developers`_ guide.
 
-DTD & StringBundle
-------------------
-
-DTD are deprecated, but still used for XUL and XHTML file localization. It uses `.dtd` files
-and the only localization feature it provides is the ability to reference one
-string from another via entity reference.
+StringBundle
+------------
 
 StringBundle is a runtime API used primarily for localization of C++ code.
 The messages are stored in `.properties` files and loaded using the StringBundle API
 and then retrieved from there via imperative calls.
 
 The system provides external arguments which can be placed into the string, and
-support basic plural categories via a proprietary API `PluralForms.jsm`.
+supports basic plural categories via a proprietary API `PluralForm.sys.mjs`.
+
+Adding new StringBundle messages should only be done after serious consideration,
+and in particular any new use of PluralForm messages should be avoided.
 
 .. _Pontoon: https://pontoon.mozilla.org/
 .. _hg.mozilla.org/l10n-central: https://hg.mozilla.org/l10n-central/