for (i = 0; patterns_to_highlight[i].str != NULL; i++)
{
regcomp(&patterns_to_highlight[i].buffer, patterns_to_highlight[i].str, REG_ICASE);
for (i = 0; patterns_to_highlight[i].str != NULL; i++)
{
regcomp(&patterns_to_highlight[i].buffer, patterns_to_highlight[i].str, REG_ICASE);