v1.3.3 add setlocale() call to set locale properly

 * limitations under the License.

 */

#include <gio/gio.h>

#include <locale.h>

#include <glib.h>

#ifdef G_OS_UNIX

#include <glib-unix.h>

	/* show panel, wait 3s, then hide panel and exit app */

	err = NULL;

	const gchar *const candidates[] = {"第一个", "第二个", "第三个"};

	/* g_message("first: %s", candidates[0]); */

	GVariant *hints = NULL;

	GVariantBuilder b = {0};

	g_variant_builder_init(&b, G_VARIANT_TYPE("a{sv}"));

	GApplication *app = NULL;

	int status = 0;

	setlocale(LC_ALL, "");

	app = g_application_new("com.emacsos.zero.ZeroPanelClientDemo",

				G_APPLICATION_FLAGS_NONE);

	g_assert_nonnull(app);

# -*- mode: conf -*-

project('zero-panel', 'c',

  version: '1.3.2',

  version: '1.3.3',

  license: 'EPL-2.0',

  meson_version: '>=0.46.0',

  default_options: [

* COMMENT -*- mode: org -*-

#+Date: 2019-09-02

Time-stamp: <2023-08-15>

Time-stamp: <2023-08-16>

#+STARTUP: content

* notes                                                               :entry:

** 2023-08-15 how to build from source?                                 :doc:

They don't work properly in Wayland.

- see minimal test application at ~/c/testing-only/do-not-focus/main.c

- 2023-08-16 search: how to mark a window as not focus on gtk window on wayland?

  search: does gtk3 support wayland properly?

* current                                                             :entry:

** 

** 2023-08-16 bug: ./build/zero-panel-client-demo segfault on RHEL9.

- it runs fine on lat21. but has a few warnings. fix the warnings.

  #+BEGIN_SRC sh

    sylecn@lat21:~/projects/zero-panel$ ./build/zero-panel-client-demo

    (zero-panel-client-demo:56547): GLib-CRITICAL **: 12:11:37.488: g_variant_new_string: assertion 'g_utf8_validate (string, -1, NULL)' failed

    (zero-panel-client-demo:56547): GLib-CRITICAL **: 12:11:37.488: g_variant_ref_sink: assertion 'value != NULL' failed

    (zero-panel-client-demo:56547): GLib-CRITICAL **: 12:11:37.488: g_variant_ref: assertion 'value != NULL' failed

    (zero-panel-client-demo:56547): GLib-CRITICAL **: 12:11:37.490: g_variant_unref: assertion 'value != NULL' failed

    ,** Message: 12:11:37.490: call ShowCandidates() okay

    ,** Message: 12:11:37.490: activate()

    ,** Message: 12:11:41.111: call Hide() okay

    ,** Message: 12:11:41.111: shutdown()

  #+END_SRC

- search: GLib-CRITICAL assert how to debug get source code line?

  rm -rf build/

  meson setup --buildtype debug build/

  cd build && ninja

  ./build/zero-panel-client-demo

  the warning is gone when I use debug build.

  env G_DEBUG=fatal-criticals ./build/zero-panel-client-demo

- I think the Chinese char* literal is most suspicious.

  try use ascii string there.

  yes. debugoptimized build warning is gone when only use ascii string.

  search: how to use unicode utf-8 string literal in gtk gchar

  all char* is assumed to be utf-8. it is supported out of the box.

- I got a minimal reproducible demo.

  #+BEGIN_SRC c

    const gchar* first = "第一个";

    g_assert_true(g_utf8_validate(first, -1, NULL));

    const gchar* second = "第二个";

    const gchar* third = "第三个";

    const gchar *const candidates[] = {first, second, third};

    g_message("first is: %s", first);

    g_message("first is: %s", candidates[0]);

  #+END_SRC

  the g_message() call output garbage.

  add setlocale(LC_ALL, "en_US.UTF-8"); worked.

  default locale must be C.    // confirmed. default locale is C.

- TODO if default locale is C, always set locale for all my glib programs.

  #include <locale.h>

  setlocale(LC_ALL, "en_US.UTF-8");

  is there a method call to use system locale instead of "C" locale?

  can I assume en_US.UTF-8 exist? I don't think so.

  any UTF-8 will do.

  https://docs.gtk.org/glib/running.html#locale

  A number of interfaces in GLib depend on the current locale in which an

  application is running. Therefore, most GLib-using applications should call

  setlocale (LC_ALL, "") to set up the current locale.

  // good.

- warning still persist after adding setlocale() call.

** 2023-08-16 what's new in gtk4? should I upgrade?

- Gtk – 4.0: Migrating from GTK 3.x to GTK 4

  https://docs.gtk.org/gtk4/migrating-3to4.html

- 

** 2019-09-02 support user configuration of theme and panel orientation.

is it supported by zero-el?

- 2023-08-01

 * limitations under the License.

 */

#include <stdlib.h>

#include <locale.h>

#include <gtk/gtk.h>

#ifdef G_OS_UNIX

#include <glib-unix.h>

	GtkApplication *app = NULL;

	int status = 0;

	// use current system locale instead of C locale.

	setlocale(LC_ALL, "");

	parse_command_line_args(argc, argv, &appdata);

	app = gtk_application_new(ZERO_PANEL_GTK_APP_ID,

				  G_APPLICATION_FLAGS_NONE);