unctrl.c

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#include <stdio.h>
#include <grass/gis.h>


char *G_unctrl(int c)
{
    static char buf[20];

    if (c < ' ')
        sprintf(buf, "ctrl-%c", c | 0100);
    else if (c < 0177)
        sprintf(buf, "%c", c);
    else if (c == 0177)
        sprintf(buf, "DEL/RUB");
    else
        sprintf(buf, "Mctrl-%c", (c & 77) | 0100);

    return buf;
}