[Vala] Switch statement and substring

[Харин Роман <HarinRoman kranky-studio ru>]

Hi, all

There are something strange with string function "substring" in switch
statement. Second switch works fine, but first not. why? (const char* ?)

I write testcase.

-- 
Харин Роман <HarinRoman kranky-studio ru>
jabber://harinr jabber ru
монопофигист

/* valac test_switch.vala -o test_switch */

void test_switch (string input) {
    var st2 = input.substring (1,1);
    stdout.printf ("Input: \"%s\", substr: \"%s\",", input, st2);
    
    stdout.printf (" substr: ");
    
    /* THIS SWITCH WORKS INCORECTLY */
    switch (input.substring (1,1)) {
        case "a":
            stdout.printf ("A"); break;
        case "b":
            stdout.printf ("B"); break;
        default: 
            stdout.printf ("*"); break;
    }

    stdout.printf (", var: ");
    /* THIS SWITCH WORKS FINE */
    switch (st2) {
        case "a":
            stdout.printf ("A\n"); break;
        case "b":
            stdout.printf ("B\n"); break;
        default: 
            stdout.printf ("*\n"); break;
    }
}


void main () {
    test_switch ("1a");
    test_switch ("2b");
    test_switch ("3c");
}