[gimp] Issue #8124: plug-in localization now totally moved plug-in side.



commit 81b569cb8ca69df21b7db3c63857a5e4e14aac92
Author: Jehan <jehan girinstud io>
Date:   Mon Jul 4 16:37:08 2022 +0200

    Issue #8124: plug-in localization now totally moved plug-in side.
    
    Plug-in localization was always partially plug-in side, especially for
    things like custom GUI. But labels or blurb in GIMP (such as in menus or
    action search) were localizing GIMP side.
    
    It had many drawbacks:
    
    - To get menu localization, a plug-in had to set up gettext, even though
      they might want to use something else for their GUI (after all, giving
      facilities for gettext is a good idea, but there is no reason to force
      using this system).
    - There was a complex internal system passing the localization domain
      name, as well as the catalog file system path to core, then through
      various classes which we can now get rid of.
    - There could be domain name clashes, if 2 plug-ins were to use the same
      i18n domain name. This was handled in now removed functions
      gimp_plug_in_manager_get_locale_domains() by simply keeping a unique
      one (and gimp_plug_in_manager_bind_text_domains() would just bind the
      domain to the kept directory). In other words, one of the duplicate
      plug-ins would use the wrong catalog. We could try to make the whole
      thing more complicated or try to forbid plug-ins to use any random
      name (in particular made easier with the new extension wrapper). But
      anyway this whole issue doesn't happen anymore if localization is
      fully made plug-in side, so why bother?
    
    I tried to evaluate the advantages of the core-side localization of
    plug-in labels/blurbs and could only find one theoretical: if we wanted
    to keep access to the original English text. This could be useful
    (theoretically) if we wanted to search (e.g. in the action search) in
    both localized and English text; or if we wanted to be able to swap
    easily en/l10n text in a UI without reload. But even if we were to ever
    do this, it would only be possible for plug-ins (GEGL operations in
    particular are localized GEGL-side), so it lacks consistency. And it's
    unsure why special-casing English should really make sense for other
    language natives who want text in their lang, and search in their lang.
    They don't necessarily care about original.
    
    So in the end, I decided to simplify the whole thing, make localization
    of plug-ins a plug-in side thing. Core will only receive translated text
    and that's it. It cuts a lot of code out of the core, simplify runtime
    processing and make plug-in creation simpler to understand.
    
    The only think I still want to look at is how exactly menu paths are
    translated right now. Note that it still works, but it's possible that
    some things may be worth improving/simplifying on this side too.

 app/actions/plug-in-actions.c                 | 127 ++---------------
 app/gimpcore.def                              |   3 -
 app/menus/plug-in-menus.c                     |  28 +---
 app/pdb/internal-procs.c                      |   2 +-
 app/pdb/plug-in-cmds.c                        |  67 ---------
 app/plug-in/Makefile.am                       |   2 -
 app/plug-in/gimpplugin.c                      |   9 --
 app/plug-in/gimpplugindef.c                   |  33 -----
 app/plug-in/gimpplugindef.h                   |   6 -
 app/plug-in/gimppluginmanager-locale-domain.c | 189 --------------------------
 app/plug-in/gimppluginmanager-locale-domain.h |  44 ------
 app/plug-in/gimppluginmanager-restore.c       |  42 +-----
 app/plug-in/gimppluginmanager.c               |   3 -
 app/plug-in/gimppluginmanager.h               |   1 -
 app/plug-in/gimppluginprocedure.c             |  47 +------
 app/plug-in/gimppluginprocedure.h             |   8 --
 app/plug-in/meson.build                       |   1 -
 app/plug-in/plug-in-rc.c                      |  55 --------
 libgimp/gimpplugin.c                          |  15 --
 libgimp/gimpplugin_pdb.c                      |  42 ------
 libgimp/gimpplugin_pdb.h                      |   2 -
 pdb/groups/plug_in.pdb                        |  49 +------
 22 files changed, 22 insertions(+), 753 deletions(-)
---
diff --git a/app/actions/plug-in-actions.c b/app/actions/plug-in-actions.c
index ba10d819ff..e2435e5a5e 100644
--- a/app/actions/plug-in-actions.c
+++ b/app/actions/plug-in-actions.c
@@ -34,7 +34,6 @@
 
 #include "plug-in/gimppluginmanager.h"
 #include "plug-in/gimppluginmanager-help-domain.h"
-#include "plug-in/gimppluginmanager-locale-domain.h"
 #include "plug-in/gimppluginmanager-menu-branch.h"
 #include "plug-in/gimppluginprocedure.h"
 
@@ -69,10 +68,7 @@ static void     plug_in_actions_menu_path_added      (GimpPlugInProcedure *proc,
 static void     plug_in_actions_add_proc             (GimpActionGroup     *group,
                                                       GimpPlugInProcedure *proc);
 
-static gboolean plug_in_actions_check_translation    (const gchar         *original,
-                                                      const gchar         *translated);
 static void     plug_in_actions_build_path           (GimpActionGroup     *group,
-                                                      const gchar         *original,
                                                       const gchar         *translated);
 
 
@@ -186,30 +182,11 @@ plug_in_actions_menu_branch_added (GimpPlugInManager *manager,
                                    const gchar       *menu_label,
                                    GimpActionGroup   *group)
 {
-  const gchar *locale_domain   = NULL;
-  gchar       *full_translated = NULL;
-  gchar       *full;
+  gchar *full;
 
   full = g_strconcat (menu_path, "/", menu_label, NULL);
+  plug_in_actions_build_path (group, full);
 
-  if (gimp_plug_in_manager_get_i18n (manager, file, &locale_domain, NULL))
-    {
-      const gchar *path_translated;
-      const gchar *label_translated;
-
-      path_translated  = dgettext (locale_domain, menu_path);
-      label_translated = dgettext (locale_domain, menu_label);
-
-      full_translated = g_strconcat (path_translated, "/", label_translated, NULL);
-    }
-
-  if (full_translated != NULL &&
-      plug_in_actions_check_translation (full, full_translated))
-    plug_in_actions_build_path (group, full, full_translated);
-  else
-    plug_in_actions_build_path (group, full, full);
-
-  g_free (full_translated);
   g_free (full);
 }
 
@@ -276,22 +253,12 @@ plug_in_actions_menu_path_added (GimpPlugInProcedure *plug_in_proc,
                                  const gchar         *menu_path,
                                  GimpActionGroup     *group)
 {
-  const gchar *locale_domain   = NULL;
-  const gchar *path_translated = NULL;
-
 #if 0
   g_print ("%s: %s (%s)\n", G_STRFUNC,
            gimp_object_get_name (plug_in_proc), menu_path);
 #endif
 
-  if (gimp_plug_in_procedure_get_i18n (plug_in_proc, &locale_domain))
-    path_translated = dgettext (locale_domain, menu_path);
-
-  if (path_translated &&
-      plug_in_actions_check_translation (menu_path, path_translated))
-    plug_in_actions_build_path (group, menu_path, path_translated);
-  else
-    plug_in_actions_build_path (group, menu_path, menu_path);
+  plug_in_actions_build_path (group, menu_path);
 }
 
 static void
@@ -299,11 +266,7 @@ plug_in_actions_add_proc (GimpActionGroup     *group,
                           GimpPlugInProcedure *proc)
 {
   GimpProcedureActionEntry  entry;
-  const gchar              *locale_domain = NULL;
   GList                    *list;
-  gboolean                  localize;
-
-  localize = gimp_plug_in_procedure_get_i18n (proc, &locale_domain);
 
   entry.name        = gimp_object_get_name (proc);
   entry.icon_name   = gimp_viewable_get_icon_name (GIMP_VIEWABLE (proc));
@@ -318,13 +281,9 @@ plug_in_actions_add_proc (GimpActionGroup     *group,
 
   for (list = proc->menu_paths; list; list = g_list_next (list))
     {
-      const gchar *original   = list->data;
-      const gchar *translated = localize ? dgettext (locale_domain, original) : NULL;
+      const gchar *original = list->data;
 
-      if (translated && plug_in_actions_check_translation (original, translated))
-        plug_in_actions_build_path (group, original, translated);
-      else
-        plug_in_actions_build_path (group, original, original);
+      plug_in_actions_build_path (group, original);
     }
 
   if (proc->image_types_val)
@@ -351,73 +310,13 @@ plug_in_actions_add_proc (GimpActionGroup     *group,
     }
 }
 
-static gboolean
-plug_in_actions_check_translation (const gchar *original,
-                                   const gchar *translated)
-{
-  const gchar *p1;
-  const gchar *p2;
-
-  /*  first check if <Prefix> is present and identical in both strings  */
-  p1 = strchr (original, '>');
-  p2 = strchr (translated, '>');
-
-  if (!p1 || !p2                           ||
-      (p1 - original) != (p2 - translated) ||
-      strncmp (original, translated, p1 - original))
-    {
-      g_printerr ("bad translation \"%s\"\n"
-                  "for menu path   \"%s\"\n"
-                  "(<Prefix> must not be translated)\n\n",
-                  translated, original);
-      return FALSE;
-    }
-
-  p1++;
-  p2++;
-
-  /*  then check if either a '/' or nothing follows in *both* strings  */
-  if (! ((*p1 == '/' && *p2 == '/') ||
-         (*p1 == '\0' && *p2 == '\0')))
-    {
-      g_printerr ("bad translation \"%s\"\n"
-                  "for menu path   \"%s\"\n"
-                  "(<Prefix> must be followed by either nothing or '/')\n\n",
-                  translated, original);
-      return FALSE;
-    }
-
-  /*  then check the number of slashes in the remaining string  */
-  while (p1 && p2)
-    {
-      p1 = strchr (p1, '/');
-      p2 = strchr (p2, '/');
-
-      if (p1) p1++;
-      if (p2) p2++;
-    }
-
-  if (p1 || p2)
-    {
-      g_printerr ("bad translation \"%s\"\n"
-                  "for menu path   \"%s\"\n"
-                  "(number of '/' must be the same)\n\n",
-                  translated, original);
-      return FALSE;
-    }
-
-  return TRUE;
-}
-
 static void
 plug_in_actions_build_path (GimpActionGroup *group,
-                            const gchar     *path_original,
                             const gchar     *path_translated)
 {
   GHashTable *path_table;
-  gchar      *copy_original;
   gchar      *copy_translated;
-  gchar      *p1, *p2;
+  gchar      *p2;
 
   path_table = g_object_get_data (G_OBJECT (group), "plug-in-path-table");
 
@@ -431,13 +330,11 @@ plug_in_actions_build_path (GimpActionGroup *group,
                               (GDestroyNotify) g_hash_table_destroy);
     }
 
-  copy_original   = gimp_strip_uline (path_original);
   copy_translated = g_strdup (path_translated);
 
-  p1 = strrchr (copy_original, '/');
   p2 = strrchr (copy_translated, '/');
 
-  if (p1 && p2 && ! g_hash_table_lookup (path_table, copy_original))
+  if (p2 && ! g_hash_table_lookup (path_table, copy_translated))
     {
       GimpAction *action;
       gchar      *label;
@@ -446,22 +343,20 @@ plug_in_actions_build_path (GimpActionGroup *group,
 
 #if 0
       g_print ("adding plug-in submenu '%s' (%s)\n",
-               copy_original, label);
+               copy_translated, label);
 #endif
 
-      action = gimp_action_impl_new (copy_original, label, NULL, NULL, NULL);
+      action = gimp_action_impl_new (copy_translated, label, NULL, NULL, NULL);
       gimp_action_group_add_action (group, action);
       g_object_unref (action);
 
-      g_hash_table_insert (path_table, g_strdup (copy_original), action);
+      g_hash_table_insert (path_table, g_strdup (copy_translated), action);
 
-      *p1 = '\0';
       *p2 = '\0';
 
       /* recursively call ourselves with the last part of the path removed */
-      plug_in_actions_build_path (group, copy_original, copy_translated);
+      plug_in_actions_build_path (group, copy_translated);
     }
 
-  g_free (copy_original);
   g_free (copy_translated);
 }
diff --git a/app/gimpcore.def b/app/gimpcore.def
index 12d4d58494..09e9228598 100644
--- a/app/gimpcore.def
+++ b/app/gimpcore.def
@@ -738,7 +738,6 @@ gimp_pickable_get_tiles
 gimp_plug_in_manager_data_free
 gimp_plug_in_manager_get_help_domain
 gimp_plug_in_manager_get_help_domains
-gimp_plug_in_manager_get_i18n
 gimp_procedure_execute_async
 gimp_procedure_get_arguments
 gimp_procedure_get_type
@@ -774,7 +773,6 @@ gimp_plug_in_procedure_get_label
 gimp_plug_in_procedure_get_type
 gimp_plug_in_procedure_new
 gimp_plug_in_procedure_set_file_proc
-gimp_plug_in_procedure_set_i18n
 gimp_plug_in_procedure_set_icon
 gimp_plug_in_procedure_set_image_types
 gimp_plug_in_procedure_set_mime_type
@@ -834,7 +832,6 @@ gimp_message_valist
 gimp_viewable_set_stock_id
 
 gimp_plug_in_procedure_get_blurb
-gimp_plug_in_procedure_get_i18n
 
 gimp_channel_select_round_rect
 gimp_drawable_undo_get_type
diff --git a/app/menus/plug-in-menus.c b/app/menus/plug-in-menus.c
index 8d89634b39..e4ec8531e9 100644
--- a/app/menus/plug-in-menus.c
+++ b/app/menus/plug-in-menus.c
@@ -31,7 +31,6 @@
 #include "core/gimp.h"
 
 #include "plug-in/gimppluginmanager.h"
-#include "plug-in/gimppluginmanager-locale-domain.h"
 #include "plug-in/gimppluginprocedure.h"
 
 #include "widgets/gimpuimanager.h"
@@ -137,14 +136,7 @@ plug_in_menus_setup (GimpUIManager *manager,
       if (plug_in_proc->menu_label &&
           ! plug_in_proc->file_proc)
         {
-          GFile       *file = gimp_plug_in_procedure_get_file (plug_in_proc);
-          GList       *path;
-          const gchar *locale_domain = NULL;
-          gboolean     localize;
-
-          localize =
-            gimp_plug_in_manager_get_i18n (plug_in_manager,
-                                           file, &locale_domain, NULL);
+          GList *path;
 
           for (path = plug_in_proc->menu_paths; path; path = g_list_next (path))
             {
@@ -156,21 +148,9 @@ plug_in_menus_setup (GimpUIManager *manager,
                   entry->proc      = plug_in_proc;
                   entry->menu_path = path->data;
 
-                  if (localize)
-                    {
-                      menu = g_strconcat (dgettext (locale_domain,
-                                                    path->data),
-                                          "/",
-                                          dgettext (locale_domain,
-                                                    plug_in_proc->menu_label),
-                                          NULL);
-                    }
-                  else
-                    {
-                      menu = g_strconcat (path->data, "/",
-                                          plug_in_proc->menu_label,
-                                          NULL);
-                    }
+                  menu = g_strconcat (path->data, "/",
+                                      plug_in_proc->menu_label,
+                                      NULL);
 
                   plug_in_menus_tree_insert (menu_entries, menu, entry);
                   g_free (menu);
diff --git a/app/pdb/internal-procs.c b/app/pdb/internal-procs.c
index 1fa6c26fde..67aeef98ff 100644
--- a/app/pdb/internal-procs.c
+++ b/app/pdb/internal-procs.c
@@ -30,7 +30,7 @@
 #include "internal-procs.h"
 
 
-/* 765 procedures registered total */
+/* 764 procedures registered total */
 
 void
 internal_procs_init (GimpPDB *pdb)
diff --git a/app/pdb/plug-in-cmds.c b/app/pdb/plug-in-cmds.c
index 2e5efd9b6c..35652bf2fa 100644
--- a/app/pdb/plug-in-cmds.c
+++ b/app/pdb/plug-in-cmds.c
@@ -85,42 +85,6 @@ plug_ins_query_invoker (GimpProcedure         *procedure,
   return return_vals;
 }
 
-static GimpValueArray *
-plug_in_domain_register_invoker (GimpProcedure         *procedure,
-                                 Gimp                  *gimp,
-                                 GimpContext           *context,
-                                 GimpProgress          *progress,
-                                 const GimpValueArray  *args,
-                                 GError               **error)
-{
-  gboolean success = TRUE;
-  const gchar *domain_name;
-  GFile *domain_file;
-
-  domain_name = g_value_get_string (gimp_value_array_index (args, 0));
-  domain_file = g_value_get_object (gimp_value_array_index (args, 1));
-
-  if (success)
-    {
-      GimpPlugIn *plug_in = gimp->plug_in_manager->current_plug_in;
-
-      if (plug_in && plug_in->call_mode == GIMP_PLUG_IN_CALL_QUERY)
-        {
-          gchar *domain_path = domain_file ? g_file_get_path (domain_file) : NULL;
-
-          gimp_plug_in_def_set_locale_domain (plug_in->plug_in_def,
-                                              domain_name, domain_path);
-
-          g_free (domain_path);
-        }
-      else
-        success = FALSE;
-    }
-
-  return gimp_procedure_get_return_values (procedure, success,
-                                           error ? *error : NULL);
-}
-
 static GimpValueArray *
 plug_in_help_register_invoker (GimpProcedure         *procedure,
                                Gimp                  *gimp,
@@ -306,37 +270,6 @@ register_plug_in_procs (GimpPDB *pdb)
   gimp_pdb_register_procedure (pdb, procedure);
   g_object_unref (procedure);
 
-  /*
-   * gimp-plug-in-domain-register
-   */
-  procedure = gimp_procedure_new (plug_in_domain_register_invoker);
-  gimp_object_set_static_name (GIMP_OBJECT (procedure),
-                               "gimp-plug-in-domain-register");
-  gimp_procedure_set_static_help (procedure,
-                                  "Registers a textdomain for localisation.",
-                                  "This procedure adds a textdomain to the list of domains GIMP searches for 
strings when translating its menu entries.\n"
-                                  "Only core plug-ins should call this function directly. Third-party 
plug-ins are expected instead to define a custom `set_i18n()` method returning their domain and a path 
relative to their folder. In other words, this should be considered an internal PDB function which should not 
be used except by core developers.",
-                                  NULL);
-  gimp_procedure_set_static_attribution (procedure,
-                                         "Sven Neumann <sven gimp org>",
-                                         "Sven Neumann",
-                                         "2000");
-  gimp_procedure_add_argument (procedure,
-                               gimp_param_spec_string ("domain-name",
-                                                       "domain name",
-                                                       "The name of the textdomain (must be unique)",
-                                                       FALSE, FALSE, FALSE,
-                                                       NULL,
-                                                       GIMP_PARAM_READWRITE));
-  gimp_procedure_add_argument (procedure,
-                               g_param_spec_object ("domain-file",
-                                                    "domain file",
-                                                    "The path to the locally installed compiled message 
catalog (may be NULL)",
-                                                    G_TYPE_FILE,
-                                                    GIMP_PARAM_READWRITE));
-  gimp_pdb_register_procedure (pdb, procedure);
-  g_object_unref (procedure);
-
   /*
    * gimp-plug-in-help-register
    */
diff --git a/app/plug-in/Makefile.am b/app/plug-in/Makefile.am
index 4e036d68bd..f6b4f43014 100644
--- a/app/plug-in/Makefile.am
+++ b/app/plug-in/Makefile.am
@@ -51,8 +51,6 @@ libappplug_in_a_SOURCES = \
        gimppluginmanager-file.h                \
        gimppluginmanager-help-domain.c         \
        gimppluginmanager-help-domain.h         \
-       gimppluginmanager-locale-domain.c       \
-       gimppluginmanager-locale-domain.h       \
        gimppluginmanager-menu-branch.c         \
        gimppluginmanager-menu-branch.h         \
        gimppluginmanager-query.c               \
diff --git a/app/plug-in/gimpplugin.c b/app/plug-in/gimpplugin.c
index 9040f5ddc4..4e46a8ea7c 100644
--- a/app/plug-in/gimpplugin.c
+++ b/app/plug-in/gimpplugin.c
@@ -89,7 +89,6 @@
 #include "gimpplugindef.h"
 #include "gimppluginmanager.h"
 #include "gimppluginmanager-help-domain.h"
-#include "gimppluginmanager-locale-domain.h"
 #include "gimptemporaryprocedure.h"
 
 #include "gimp-intl.h"
@@ -927,8 +926,6 @@ gimp_plug_in_add_temp_proc (GimpPlugIn             *plug_in,
 {
   GimpPlugInProcedure *overridden;
   const gchar         *help_domain;
-  const gchar         *locale_domain = NULL;
-  gboolean             localize;
 
   g_return_if_fail (GIMP_IS_PLUG_IN (plug_in));
   g_return_if_fail (GIMP_IS_TEMPORARY_PROCEDURE (proc));
@@ -940,16 +937,10 @@ gimp_plug_in_add_temp_proc (GimpPlugIn             *plug_in,
     gimp_plug_in_remove_temp_proc (plug_in,
                                    GIMP_TEMPORARY_PROCEDURE (overridden));
 
-  localize = gimp_plug_in_manager_get_i18n (plug_in->manager,
-                                            plug_in->file,
-                                            &locale_domain,
-                                            NULL);
   help_domain = gimp_plug_in_manager_get_help_domain (plug_in->manager,
                                                       plug_in->file,
                                                       NULL);
 
-  gimp_plug_in_procedure_set_i18n (GIMP_PLUG_IN_PROCEDURE (proc), localize,
-                                   locale_domain);
   gimp_plug_in_procedure_set_help_domain (GIMP_PLUG_IN_PROCEDURE (proc),
                                           help_domain);
 
diff --git a/app/plug-in/gimpplugindef.c b/app/plug-in/gimpplugindef.c
index 4725bd9c94..e9088476c6 100644
--- a/app/plug-in/gimpplugindef.c
+++ b/app/plug-in/gimpplugindef.c
@@ -63,8 +63,6 @@ gimp_plug_in_def_finalize (GObject *object)
   GimpPlugInDef *plug_in_def = GIMP_PLUG_IN_DEF (object);
 
   g_object_unref (plug_in_def->file);
-  g_free (plug_in_def->locale_domain_name);
-  g_free (plug_in_def->locale_domain_path);
   g_free (plug_in_def->help_domain_name);
   g_free (plug_in_def->help_domain_uri);
 
@@ -81,8 +79,6 @@ gimp_plug_in_def_get_memsize (GimpObject *object,
   gint64         memsize     = 0;
 
   memsize += gimp_g_object_get_memsize (G_OBJECT (plug_in_def->file));
-  memsize += gimp_string_get_memsize (plug_in_def->locale_domain_name);
-  memsize += gimp_string_get_memsize (plug_in_def->locale_domain_path);
   memsize += gimp_string_get_memsize (plug_in_def->help_domain_name);
   memsize += gimp_string_get_memsize (plug_in_def->help_domain_uri);
 
@@ -126,9 +122,6 @@ gimp_plug_in_def_add_procedure (GimpPlugInDef       *plug_in_def,
 
   proc->mtime = plug_in_def->mtime;
 
-  if (plug_in_def->locale_domain_name)
-    gimp_plug_in_procedure_set_i18n (proc, TRUE,
-                                     plug_in_def->locale_domain_name);
   gimp_plug_in_procedure_set_help_domain (proc,
                                           plug_in_def->help_domain_name);
 
@@ -147,32 +140,6 @@ gimp_plug_in_def_remove_procedure (GimpPlugInDef       *plug_in_def,
   g_object_unref (proc);
 }
 
-void
-gimp_plug_in_def_set_locale_domain (GimpPlugInDef *plug_in_def,
-                                    const gchar   *domain_name,
-                                    const gchar   *domain_path)
-{
-  GSList *list;
-
-  g_return_if_fail (GIMP_IS_PLUG_IN_DEF (plug_in_def));
-
-  if (plug_in_def->locale_domain_name)
-    g_free (plug_in_def->locale_domain_name);
-  plug_in_def->locale_domain_name = g_strdup (domain_name);
-
-  if (plug_in_def->locale_domain_path)
-    g_free (plug_in_def->locale_domain_path);
-  plug_in_def->locale_domain_path = g_strdup (domain_path);
-
-  for (list = plug_in_def->procedures; list; list = g_slist_next (list))
-    {
-      GimpPlugInProcedure *procedure = list->data;
-
-      gimp_plug_in_procedure_set_i18n (procedure, TRUE,
-                                       plug_in_def->locale_domain_name);
-    }
-}
-
 void
 gimp_plug_in_def_set_help_domain (GimpPlugInDef *plug_in_def,
                                   const gchar   *domain_name,
diff --git a/app/plug-in/gimpplugindef.h b/app/plug-in/gimpplugindef.h
index d819e1ae6a..81e55ca65e 100644
--- a/app/plug-in/gimpplugindef.h
+++ b/app/plug-in/gimpplugindef.h
@@ -39,8 +39,6 @@ struct _GimpPlugInDef
 
   GFile      *file;
   GSList     *procedures;
-  gchar      *locale_domain_name;
-  gchar      *locale_domain_path;
   gchar      *help_domain_name;
   gchar      *help_domain_uri;
   gint64      mtime;
@@ -63,10 +61,6 @@ void   gimp_plug_in_def_add_procedure     (GimpPlugInDef       *plug_in_def,
 void   gimp_plug_in_def_remove_procedure  (GimpPlugInDef       *plug_in_def,
                                            GimpPlugInProcedure *proc);
 
-void   gimp_plug_in_def_set_locale_domain (GimpPlugInDef       *plug_in_def,
-                                           const gchar         *domain_name,
-                                           const gchar         *domain_path);
-
 void   gimp_plug_in_def_set_help_domain   (GimpPlugInDef       *plug_in_def,
                                            const gchar         *domain_name,
                                            const gchar         *domain_uri);
diff --git a/app/plug-in/gimppluginmanager-restore.c b/app/plug-in/gimppluginmanager-restore.c
index 80cd23a5fb..6ac77f1c8e 100644
--- a/app/plug-in/gimppluginmanager-restore.c
+++ b/app/plug-in/gimppluginmanager-restore.c
@@ -44,7 +44,6 @@
 #include "gimppluginmanager-call.h"
 #include "gimppluginmanager-file.h"
 #include "gimppluginmanager-help-domain.h"
-#include "gimppluginmanager-locale-domain.h"
 #include "gimppluginmanager-restore.h"
 #include "gimppluginprocedure.h"
 #include "plug-in-rc.h"
@@ -69,7 +68,6 @@ static void    gimp_plug_in_manager_init_plug_ins     (GimpPlugInManager    *man
 static void    gimp_plug_in_manager_run_extensions    (GimpPlugInManager    *manager,
                                                        GimpContext          *context,
                                                        GimpInitStatusFunc    status_callback);
-static void    gimp_plug_in_manager_bind_text_domains (GimpPlugInManager    *manager);
 static void    gimp_plug_in_manager_add_from_file     (GimpPlugInManager    *manager,
                                                        GFile                *file,
                                                        guint64               mtime);
@@ -148,19 +146,10 @@ gimp_plug_in_manager_restore (GimpPlugInManager  *manager,
 
   g_object_unref (pluginrc);
 
-  /* create locale and help domain lists */
+  /* create help domain lists */
   for (list = manager->plug_in_defs; list; list = list->next)
     {
-      GimpPlugInDef *plug_in_def   = list->data;
-      const gchar   *locale_domain = NULL;
-
-      if (plug_in_def->locale_domain_name)
-        {
-          gimp_plug_in_manager_add_locale_domain (manager,
-                                                  plug_in_def->file,
-                                                  plug_in_def->locale_domain_name,
-                                                  plug_in_def->locale_domain_path);
-        }
+      GimpPlugInDef *plug_in_def = list->data;
 
       if (plug_in_def->help_domain_name)
         gimp_plug_in_manager_add_help_domain (manager,
@@ -173,9 +162,6 @@ gimp_plug_in_manager_restore (GimpPlugInManager  *manager,
   g_slist_free_full (manager->plug_in_defs, (GDestroyNotify) g_object_unref);
   manager->plug_in_defs = NULL;
 
-  /* bind plug-in text domains  */
-  gimp_plug_in_manager_bind_text_domains (manager);
-
   /* add the plug-in procs to the procedure database */
   for (list = manager->plug_in_procedures; list; list = list->next)
     {
@@ -642,30 +628,6 @@ gimp_plug_in_manager_run_extensions (GimpPlugInManager  *manager,
     }
 }
 
-static void
-gimp_plug_in_manager_bind_text_domains (GimpPlugInManager *manager)
-{
-  gchar **locale_domains;
-  gchar **locale_paths;
-  gint    n_domains;
-  gint    i;
-
-  n_domains = gimp_plug_in_manager_get_locale_domains (manager,
-                                                       &locale_domains,
-                                                       &locale_paths);
-
-  for (i = 0; i < n_domains; i++)
-    {
-      bindtextdomain (locale_domains[i], locale_paths[i]);
-#ifdef HAVE_BIND_TEXTDOMAIN_CODESET
-      bind_textdomain_codeset (locale_domains[i], "UTF-8");
-#endif
-    }
-
-  g_strfreev (locale_domains);
-  g_strfreev (locale_paths);
-}
-
 /**
  * gimp_plug_in_manager_ignore_plugin_basename:
  * @basename: Basename to test with
diff --git a/app/plug-in/gimppluginmanager.c b/app/plug-in/gimppluginmanager.c
index 31b86e1cde..46d534c5d3 100644
--- a/app/plug-in/gimppluginmanager.c
+++ b/app/plug-in/gimppluginmanager.c
@@ -46,7 +46,6 @@
 #include "gimppluginmanager.h"
 #include "gimppluginmanager-data.h"
 #include "gimppluginmanager-help-domain.h"
-#include "gimppluginmanager-locale-domain.h"
 #include "gimppluginmanager-menu-branch.h"
 #include "gimppluginshm.h"
 #include "gimptemporaryprocedure.h"
@@ -161,7 +160,6 @@ gimp_plug_in_manager_finalize (GObject *object)
   g_clear_pointer (&manager->debug, gimp_plug_in_debug_free);
 
   gimp_plug_in_manager_menu_branch_exit (manager);
-  gimp_plug_in_manager_locale_domain_exit (manager);
   gimp_plug_in_manager_help_domain_exit (manager);
   gimp_plug_in_manager_data_free (manager);
 
@@ -192,7 +190,6 @@ gimp_plug_in_manager_get_memsize (GimpObject *object,
   memsize += gimp_g_slist_get_memsize (manager->display_raw_load_procs, 0);
 
   memsize += gimp_g_slist_get_memsize (manager->menu_branches,  0 /* FIXME */);
-  memsize += gimp_g_slist_get_memsize (manager->locale_domains, 0 /* FIXME */);
   memsize += gimp_g_slist_get_memsize (manager->help_domains,   0 /* FIXME */);
 
   memsize += gimp_g_slist_get_memsize_foreach (manager->open_plug_ins,
diff --git a/app/plug-in/gimppluginmanager.h b/app/plug-in/gimppluginmanager.h
index 18328e3750..cd153c215a 100644
--- a/app/plug-in/gimppluginmanager.h
+++ b/app/plug-in/gimppluginmanager.h
@@ -56,7 +56,6 @@ struct _GimpPlugInManager
   GSList            *display_raw_load_procs;
 
   GSList            *menu_branches;
-  GSList            *locale_domains;
   GSList            *help_domains;
 
   GimpPlugIn        *current_plug_in;
diff --git a/app/plug-in/gimppluginprocedure.c b/app/plug-in/gimppluginprocedure.c
index f30e945c5a..03346f728a 100644
--- a/app/plug-in/gimppluginprocedure.c
+++ b/app/plug-in/gimppluginprocedure.c
@@ -255,14 +255,7 @@ gimp_plug_in_procedure_get_menu_label (GimpProcedure *procedure)
   GimpPlugInProcedure *proc = GIMP_PLUG_IN_PROCEDURE (procedure);
 
   if (proc->menu_label)
-    {
-      const gchar *locale_domain = NULL;
-
-      if (gimp_plug_in_procedure_get_i18n (proc, &locale_domain))
-        return dgettext (locale_domain, proc->menu_label);
-      else
-        return proc->menu_label;
-    }
+    return proc->menu_label;
 
   return GIMP_PROCEDURE_CLASS (parent_class)->get_menu_label (procedure);
 }
@@ -270,18 +263,8 @@ gimp_plug_in_procedure_get_menu_label (GimpProcedure *procedure)
 static const gchar *
 gimp_plug_in_procedure_get_blurb (GimpProcedure *procedure)
 {
-  GimpPlugInProcedure *proc = GIMP_PLUG_IN_PROCEDURE (procedure);
-
-  /*  do not to pass the empty string to gettext()  */
-  if (procedure->blurb && strlen (procedure->blurb))
-    {
-      const gchar *locale_domain = NULL;
-
-      if (gimp_plug_in_procedure_get_i18n (proc, &locale_domain))
-        return dgettext (locale_domain, procedure->blurb);
-      else
-        return procedure->blurb;
-    }
+  if (procedure->blurb)
+    return procedure->blurb;
 
   return NULL;
 }
@@ -571,30 +554,6 @@ gimp_plug_in_procedure_get_file (GimpPlugInProcedure *proc)
   return GIMP_PLUG_IN_PROCEDURE_GET_CLASS (proc)->get_file (proc);
 }
 
-void
-gimp_plug_in_procedure_set_i18n (GimpPlugInProcedure *proc,
-                                 gboolean             localize,
-                                 const gchar         *locale_domain)
-{
-  g_return_if_fail (GIMP_IS_PLUG_IN_PROCEDURE (proc));
-
-  proc->localize      = localize;
-  proc->locale_domain = localize && locale_domain ? g_quark_from_string (locale_domain) : 0;
-}
-
-gboolean
-gimp_plug_in_procedure_get_i18n (GimpPlugInProcedure  *proc,
-                                 const gchar         **domain)
-{
-  g_return_val_if_fail (GIMP_IS_PLUG_IN_PROCEDURE (proc), FALSE);
-  g_return_val_if_fail (domain && *domain == NULL, FALSE);
-
-  if (proc->localize)
-    *domain = g_quark_to_string (proc->locale_domain);
-
-  return proc->localize;
-}
-
 void
 gimp_plug_in_procedure_set_help_domain (GimpPlugInProcedure *proc,
                                         const gchar         *help_domain)
diff --git a/app/plug-in/gimppluginprocedure.h b/app/plug-in/gimppluginprocedure.h
index 56fd048a99..8394bdfb71 100644
--- a/app/plug-in/gimppluginprocedure.h
+++ b/app/plug-in/gimppluginprocedure.h
@@ -40,8 +40,6 @@ struct _GimpPlugInProcedure
 
   /*  common members  */
   GFile               *file;
-  gboolean             localize;
-  GQuark               locale_domain;
   GQuark               help_domain;
   gchar               *menu_label;
   GList               *menu_paths;
@@ -98,12 +96,6 @@ GimpPlugInProcedure * gimp_plug_in_procedure_find      (GSList              *lis
 
 GFile       * gimp_plug_in_procedure_get_file          (GimpPlugInProcedure *proc);
 
-void          gimp_plug_in_procedure_set_i18n          (GimpPlugInProcedure *proc,
-                                                        gboolean             localize,
-                                                        const gchar         *locale_domain);
-gboolean      gimp_plug_in_procedure_get_i18n          (GimpPlugInProcedure *proc,
-                                                        const gchar        **domain);
-
 void          gimp_plug_in_procedure_set_help_domain   (GimpPlugInProcedure *proc,
                                                         const gchar         *help_domain);
 const gchar * gimp_plug_in_procedure_get_help_domain   (GimpPlugInProcedure *proc);
diff --git a/app/plug-in/meson.build b/app/plug-in/meson.build
index 43c9facc21..1cf44a5666 100644
--- a/app/plug-in/meson.build
+++ b/app/plug-in/meson.build
@@ -33,7 +33,6 @@ libappplugin_sources = [
   'gimppluginmanager-data.c',
   'gimppluginmanager-file.c',
   'gimppluginmanager-help-domain.c',
-  'gimppluginmanager-locale-domain.c',
   'gimppluginmanager-menu-branch.c',
   'gimppluginmanager-query.c',
   'gimppluginmanager-restore.c',
diff --git a/app/plug-in/plug-in-rc.c b/app/plug-in/plug-in-rc.c
index 500e6f1404..d2ead9d5da 100644
--- a/app/plug-in/plug-in-rc.c
+++ b/app/plug-in/plug-in-rc.c
@@ -66,8 +66,6 @@ static GTokenType plug_in_proc_arg_deserialize   (GScanner             *scanner,
                                                   Gimp                 *gimp,
                                                   GimpProcedure        *procedure,
                                                   gboolean              return_value);
-static GTokenType plug_in_locale_def_deserialize (GScanner             *scanner,
-                                                  GimpPlugInDef        *plug_in_def);
 static GTokenType plug_in_help_def_deserialize   (GScanner             *scanner,
                                                   GimpPlugInDef        *plug_in_def);
 static GTokenType plug_in_has_init_deserialize   (GScanner             *scanner,
@@ -80,7 +78,6 @@ enum
   FILE_VERSION,
   PLUG_IN_DEF,
   PROC_DEF,
-  LOCALE_DEF,
   HELP_DEF,
   HAS_INIT,
   PROC_ARG,
@@ -134,8 +131,6 @@ plug_in_rc_parse (Gimp    *gimp,
 
   g_scanner_scope_add_symbol (scanner, PLUG_IN_DEF,
                               "proc-def", GINT_TO_POINTER (PROC_DEF));
-  g_scanner_scope_add_symbol (scanner, PLUG_IN_DEF,
-                              "locale-def", GINT_TO_POINTER (LOCALE_DEF));
   g_scanner_scope_add_symbol (scanner, PLUG_IN_DEF,
                               "help-def", GINT_TO_POINTER (HELP_DEF));
   g_scanner_scope_add_symbol (scanner, PLUG_IN_DEF,
@@ -337,10 +332,6 @@ plug_in_def_deserialize (Gimp      *gimp,
                 g_object_unref (proc);
               break;
 
-            case LOCALE_DEF:
-              token = plug_in_locale_def_deserialize (scanner, plug_in_def);
-              break;
-
             case HELP_DEF:
               token = plug_in_help_def_deserialize (scanner, plug_in_def);
               break;
@@ -957,32 +948,6 @@ plug_in_proc_arg_deserialize (GScanner      *scanner,
   return token;
 }
 
-static GTokenType
-plug_in_locale_def_deserialize (GScanner      *scanner,
-                                GimpPlugInDef *plug_in_def)
-{
-  gchar *domain_name;
-  gchar *domain_path   = NULL;
-  gchar *expanded_path = NULL;
-
-  if (! gimp_scanner_parse_string (scanner, &domain_name))
-    return G_TOKEN_STRING;
-
-  if (gimp_scanner_parse_string (scanner, &domain_path))
-    expanded_path = gimp_config_path_expand (domain_path, TRUE, NULL);
-
-  gimp_plug_in_def_set_locale_domain (plug_in_def, domain_name, expanded_path);
-
-  g_free (domain_name);
-  g_free (domain_path);
-  g_free (expanded_path);
-
-  if (! gimp_scanner_parse_token (scanner, G_TOKEN_RIGHT_PAREN))
-    return G_TOKEN_RIGHT_PAREN;
-
-  return G_TOKEN_LEFT_PAREN;
-}
-
 static GTokenType
 plug_in_help_def_deserialize (GScanner      *scanner,
                               GimpPlugInDef *plug_in_def)
@@ -1335,26 +1300,6 @@ plug_in_rc_write (GSList  *plug_in_defs,
               gimp_config_writer_close (writer);
             }
 
-          if (plug_in_def->locale_domain_name)
-            {
-              gimp_config_writer_open (writer, "locale-def");
-              gimp_config_writer_string (writer,
-                                         plug_in_def->locale_domain_name);
-
-              if (plug_in_def->locale_domain_path)
-                {
-                  path = gimp_config_path_unexpand (plug_in_def->locale_domain_path,
-                                                    TRUE, NULL);
-                  if (path)
-                    {
-                      gimp_config_writer_string (writer, path);
-                      g_free (path);
-                    }
-                }
-
-              gimp_config_writer_close (writer);
-            }
-
           if (plug_in_def->help_domain_name)
             {
               gimp_config_writer_open (writer, "help-def");
diff --git a/libgimp/gimpplugin.c b/libgimp/gimpplugin.c
index bf84bc1d83..08baa91837 100644
--- a/libgimp/gimpplugin.c
+++ b/libgimp/gimpplugin.c
@@ -1046,26 +1046,11 @@ gimp_plug_in_register (GimpPlugIn *plug_in,
     {
       const gchar   *name = list->data;
       GimpProcedure *procedure;
-      gchar *gettext_domain = NULL;
-      gchar *catalog_dir    = NULL;
 
       procedure = _gimp_plug_in_create_procedure (plug_in, name);
       if (procedure)
         {
           GIMP_PROCEDURE_GET_CLASS (procedure)->install (procedure);
-
-          if (_gimp_plug_in_set_i18n (plug_in, gimp_procedure_get_name (procedure),
-                                      &gettext_domain, &catalog_dir))
-            {
-              GFile *file = g_file_new_for_path (catalog_dir);
-
-              _gimp_plug_in_domain_register (gettext_domain, file);
-
-              g_free (gettext_domain);
-              g_free (catalog_dir);
-              g_object_unref (file);
-            }
-
           g_object_unref (procedure);
         }
       else
diff --git a/libgimp/gimpplugin_pdb.c b/libgimp/gimpplugin_pdb.c
index 9e98bdc55d..0fc5043a1c 100644
--- a/libgimp/gimpplugin_pdb.c
+++ b/libgimp/gimpplugin_pdb.c
@@ -27,48 +27,6 @@
 #include "gimp.h"
 #include "gimpplugin_pdb.h"
 
-/**
- * _gimp_plug_in_domain_register:
- * @domain_name: The name of the textdomain (must be unique).
- * @domain_file: The path to the locally installed compiled message catalog (may be NULL).
- *
- * Registers a textdomain for localisation.
- *
- * This procedure adds a textdomain to the list of domains GIMP
- * searches for strings when translating its menu entries.
- * Only core plug-ins should call this function directly. Third-party
- * plug-ins are expected instead to define a custom `set_i18n()` method
- * returning their domain and a path relative to their folder. In other
- * words, this should be considered an internal PDB function which
- * should not be used except by core developers.
- *
- * Returns: TRUE on success.
- **/
-gboolean
-_gimp_plug_in_domain_register (const gchar *domain_name,
-                               GFile       *domain_file)
-{
-  GimpValueArray *args;
-  GimpValueArray *return_vals;
-  gboolean success = TRUE;
-
-  args = gimp_value_array_new_from_types (NULL,
-                                          G_TYPE_STRING, domain_name,
-                                          G_TYPE_FILE, domain_file,
-                                          G_TYPE_NONE);
-
-  return_vals = gimp_pdb_run_procedure_array (gimp_get_pdb (),
-                                              "gimp-plug-in-domain-register",
-                                              args);
-  gimp_value_array_unref (args);
-
-  success = GIMP_VALUES_GET_ENUM (return_vals, 0) == GIMP_PDB_SUCCESS;
-
-  gimp_value_array_unref (return_vals);
-
-  return success;
-}
-
 /**
  * _gimp_plug_in_help_register:
  * @domain_name: The XML namespace of the plug-in's help pages.
diff --git a/libgimp/gimpplugin_pdb.h b/libgimp/gimpplugin_pdb.h
index 14a95fc98a..6852ed6ffa 100644
--- a/libgimp/gimpplugin_pdb.h
+++ b/libgimp/gimpplugin_pdb.h
@@ -32,8 +32,6 @@ G_BEGIN_DECLS
 /* For information look into the C source or the html documentation */
 
 
-G_GNUC_INTERNAL gboolean            _gimp_plug_in_domain_register       (const gchar         *domain_name,
-                                                                         GFile               *domain_file);
 G_GNUC_INTERNAL gboolean            _gimp_plug_in_help_register         (const gchar         *domain_name,
                                                                          GFile               *domain_file);
 G_GNUC_INTERNAL gboolean            _gimp_plug_in_menu_branch_register  (const gchar         *menu_path,
diff --git a/pdb/groups/plug_in.pdb b/pdb/groups/plug_in.pdb
index 23fb0ad40c..fe516085e1 100644
--- a/pdb/groups/plug_in.pdb
+++ b/pdb/groups/plug_in.pdb
@@ -57,52 +57,6 @@ CODE
     );
 }
 
-sub plug_in_domain_register {
-    $blurb = 'Registers a textdomain for localisation.';
-
-    $help = <<'HELP';
-This procedure adds a textdomain to the list of domains GIMP searches
-for strings when translating its menu entries.
-
-Only core plug-ins should call this function directly. Third-party
-plug-ins are expected instead to define a custom `set_i18n()` method
-returning their domain and a path relative to their folder. In other
-words, this should be considered an internal PDB function which should
-not be used except by core developers.
-HELP
-
-    &neo_pdb_misc('2000');
-
-    $lib_private = 1;
-
-    @inargs = (
-       { name => 'domain_name', type => 'string',
-         desc => 'The name of the textdomain (must be unique)' },
-       { name => 'domain_file', type => 'file',
-         desc => 'The path to the locally installed compiled message catalog (may be NULL)' }
-    );
-
-    %invoke = (
-       code => <<'CODE'
-{
-  GimpPlugIn *plug_in = gimp->plug_in_manager->current_plug_in;
-
-  if (plug_in && plug_in->call_mode == GIMP_PLUG_IN_CALL_QUERY)
-    {
-      gchar *domain_path = domain_file ? g_file_get_path (domain_file) : NULL;
-
-      gimp_plug_in_def_set_locale_domain (plug_in->plug_in_def,
-                                          domain_name, domain_path);
-
-      g_free (domain_path);
-    }
-  else
-    success = FALSE;
-}
-CODE
-    );
-}
-
 sub plug_in_help_register {
     $blurb = "Register a help path for a plug-in.";
 
@@ -270,13 +224,12 @@ CODE
               "gimppdb-utils.h");
 
 @procs = qw(plug_ins_query
-           plug_in_domain_register
             plug_in_help_register
             plug_in_menu_branch_register
             plug_in_set_pdb_error_handler
             plug_in_get_pdb_error_handler);
 
-%exports = (app => [@procs], lib => [@procs[1,2,3,4,5]]);
+%exports = (app => [@procs], lib => [@procs[1,2,3,4]]);
 
 $desc = 'Plug-in';
 


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