Issue #124, case 1: Added test for this case
Actual fix is in stx:libbasic, revision 3563e89f551b.
https://swing.fit.cvut.cz/projects/stx-jv/ticket/124#comment:19
/* XPM */
static char *CheckOn10_xp_xpm[] = {
/* width height ncolors chars_per_pixel */
"10 10 2 1",
/* colors */
"a c #21A121",
"b c none",
/* pixels */
"bbbbbbbbbb",
"bbbbbbbbbb",
"bbbbbbbbab",
"bbbbbbbaab",
"bbabbbaaab",
"bbaabaaabb",
"bbaaaaabbb",
"bbbaaabbbb",
"bbbbabbbbb",
"bbbbbbbbbb",
};