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diff --git a/depends/libxcb-errors/xcb/xcb_errors.h b/depends/libxcb-errors/xcb/xcb_errors.h
new file mode 100644
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+++ b/depends/libxcb-errors/xcb/xcb_errors.h
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+#ifndef __XCB_ERRORS_H__
+#define __XCB_ERRORS_H__
+
+/* Copyright © 2015 Uli Schlachter
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+#include <xcb/xcb.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * A context for using this library.
+ *
+ * Create a context with @ref xcb_errors_context_new () and destroy it with @ref
+ * xcb_errors_context_free (). Except for @ref xcb_errors_context_free (), all
+ * functions in this library are thread-safe and can be called from multiple
+ * threads at the same time, even on the same context.
+ */
+typedef struct xcb_errors_context_t xcb_errors_context_t;
+
+/**
+ * Create a new @ref xcb_errors_context_t.
+ *
+ * @param conn A XCB connection which will be used until you destroy the context
+ * with @ref xcb_errors_context_free ().
+ * @param ctx A pointer to an xcb_cursor_context_t* which will be modified to
+ * refer to the newly created context.
+ * @return 0 on success, -1 otherwise. This function may fail due to memory
+ * allocation failures or if the connection ends up in an error state.
+ */
+int xcb_errors_context_new(xcb_connection_t *conn, xcb_errors_context_t **ctx);
+
+/**
+ * Free the @ref xcb_cursor_context_t.
+ *
+ * @param ctx The context to free.
+ */
+void xcb_errors_context_free(xcb_errors_context_t *ctx);
+
+/**
+ * Get the name corresponding to some major code. This is either the name of
+ * some core request or the name of the extension that owns this major code.
+ *
+ * @param ctx An errors context, created with @ref xcb_errors_context_new ()
+ * @param major_code The major code
+ * @return A string allocated in static storage that contains a name for this
+ * major code. This will never return NULL, but other functions in this library
+ * may.
+ */
+const char *xcb_errors_get_name_for_major_code(xcb_errors_context_t *ctx,
+		uint8_t major_code);
+
+/**
+ * Get the name corresponding to some minor code. When the major_code does not
+ * belong to any extension or the minor_code is not assigned inside this
+ * extension, NULL is returned.
+ *
+ * @param ctx An errors context, created with @ref xcb_errors_context_new ()
+ * @param major_code The major code under which to look up the minor code
+ * @param major_code The minor code
+ * @return A string allocated in static storage that contains a name for this
+ * major code or NULL for unknown codes.
+ */
+const char *xcb_errors_get_name_for_minor_code(xcb_errors_context_t *ctx,
+		uint8_t major_code,
+		uint16_t minor_code);
+
+/**
+ * Get the name corresponding to some core event code. If possible, you should
+ * use @ref xcb_errors_get_name_for_xcb_event instead.
+ *
+ * @param ctx An errors context, created with @ref xcb_errors_context_new ()
+ * @param event_code The response_type of an event.
+ * @param extension Will be set to the name of the extension that generated this
+ * event or NULL for unknown events or core X11 events. This argument may be
+ * NULL.
+ * @return A string allocated in static storage that contains a name for this
+ * major code. This will never return NULL, but other functions in this library
+ * may.
+ */
+const char *xcb_errors_get_name_for_core_event(xcb_errors_context_t *ctx,
+		uint8_t event_code, const char **extension);
+
+/**
+ * Get the name corresponding to some XGE or XKB event. XKB does not actually
+ * use the X generic event extension, but implements its own event multiplexing.
+ * This function also handles XKB's xkbType events as a event_type.
+ *
+ * If possible, you should use @ref xcb_errors_get_name_for_xcb_event instead.
+ *
+ * @param ctx An errors context, created with @ref xcb_errors_context_new ()
+ * @param major_code The extension's major code
+ * @param event_type The type of the event in that extension.
+ * @return A string allocated in static storage that contains a name for this
+ * event or NULL for unknown event types.
+ */
+const char *xcb_errors_get_name_for_xge_event(xcb_errors_context_t *ctx,
+		uint8_t major_code, uint16_t event_type);
+
+/**
+ * Get a human printable name describing the type of some event.
+ *
+ * @param ctx An errors context, created with @ref xcb_errors_context_new ()
+ * @param event The event to investigate.
+ * @param extension Will be set to the name of the extension that generated this
+ * event or NULL for unknown events or core X11 events. This argument may be
+ * NULL.
+ * @return A string allocated in static storage that contains a name for this
+ * event or NULL for unknown event types.
+ */
+const char *xcb_errors_get_name_for_xcb_event(xcb_errors_context_t *ctx,
+		xcb_generic_event_t *event, const char **extension);
+
+/**
+ * Get the name corresponding to some error.
+ *
+ * @param ctx An errors context, created with @ref xcb_errors_context_new ()
+ * @param error_code The error_code of an error reply.
+ * @param extension Will be set to the name of the extension that generated this
+ * event or NULL for unknown errors or core X11 errors. This argument may be
+ * NULL.
+ * @return A string allocated in static storage that contains a name for this
+ * major code. This will never return NULL, but other functions in this library
+ * may.
+ */
+const char *xcb_errors_get_name_for_error(xcb_errors_context_t *ctx,
+		uint8_t error_code, const char **extension);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __XCB_ERRORS_H__ */