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								#include <stdio.h>
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								#include <stdlib.h>
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								#include <string.h>
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								#include "../debug.h"
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								#include "helpline.h"
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								#include "ui.h"
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								char ui_helpline__current[512];
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								static void nop_helpline__pop(void)
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								{
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								}
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								static void nop_helpline__push(const char *msg __maybe_unused)
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								{
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								}
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								static struct ui_helpline default_helpline_fns = {
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									.pop	= nop_helpline__pop,
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									.push	= nop_helpline__push,
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								};
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								struct ui_helpline *helpline_fns = &default_helpline_fns;
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								void ui_helpline__pop(void)
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								{
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									helpline_fns->pop();
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								}
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								void ui_helpline__push(const char *msg)
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								{
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									helpline_fns->push(msg);
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								}
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								void ui_helpline__vpush(const char *fmt, va_list ap)
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								{
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									char *s;
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									if (vasprintf(&s, fmt, ap) < 0)
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										vfprintf(stderr, fmt, ap);
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									else {
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										ui_helpline__push(s);
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										free(s);
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									}
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								}
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								void ui_helpline__fpush(const char *fmt, ...)
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								{
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									va_list ap;
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									va_start(ap, fmt);
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									ui_helpline__vpush(fmt, ap);
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									va_end(ap);
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								}
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								void ui_helpline__puts(const char *msg)
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								{
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									ui_helpline__pop();
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									ui_helpline__push(msg);
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								}
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