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X11: Fix CJK IME input when locale CTYPE is "C"
Fixes #1587. Fixes #1636.
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@ -167,6 +167,7 @@ information on what to include when reporting a bug.
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- [X11] Bugfix: Window position events were not emitted during resizing (#1613)
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- [X11] Bugfix: `glfwFocusWindow` could terminate on older WMs or without a WM
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- [X11] Bugfix: Querying a disconnected monitor could segfault (#1602)
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- [X11] Bugfix: IME input of CJK was broken for "C" locale (#1587,#1636)
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- [Wayland] Removed support for `wl_shell` (#1443)
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- [Wayland] Bugfix: The `GLFW_HAND_CURSOR` shape used the wrong image (#1432)
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- [Wayland] Bugfix: `CLOCK_MONOTONIC` was not correctly enabled
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@ -1831,6 +1831,10 @@ typedef struct GLFWgamepadstate
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* bundle, if present. This can be disabled with the @ref
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* GLFW_COCOA_CHDIR_RESOURCES init hint.
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*
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* @remark @x11 This function will set the `LC_CTYPE` category of the
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* application locale according to the current environment if that category is
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* still "C". This is because the "C" locale breaks Unicode text input.
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*
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* @thread_safety This function must only be called from the main thread.
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*
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* @sa @ref intro_init
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@ -936,15 +936,12 @@ Cursor _glfwCreateCursorX11(const GLFWimage* image, int xhot, int yhot)
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int _glfwPlatformInit(void)
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{
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#if !defined(X_HAVE_UTF8_STRING)
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// HACK: If the current locale is "C" and the Xlib UTF-8 functions are
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// unavailable, apply the environment's locale in the hope that it's
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// both available and not "C"
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// This is done because the "C" locale breaks wide character input,
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// which is what we fall back on when UTF-8 support is missing
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// HACK: If the application has left the locale as "C" then both wide
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// character text input and explicit UTF-8 input via XIM will break
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// This sets the CTYPE part of the current locale from the environment
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// in the hope that it is set to something more sane than "C"
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if (strcmp(setlocale(LC_CTYPE, NULL), "C") == 0)
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setlocale(LC_CTYPE, "");
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#endif
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#if defined(__CYGWIN__)
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_glfw.x11.xlib.handle = _glfw_dlopen("libX11-6.so");
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