Function tabs_to_spaces

library/modules/DFSDL.cpp:238–244

convert tabs to spaces so they don't get converted to '?'

// convert tabs to spaces so they don't get converted to '?'
static char * tabs_to_spaces(char *str) {
    for (char *c = str; *c; ++c) {
        if (*c == '\t')
            *c = ' ';
    }
    return str;
}

static string normalize_newlines(const string & str, bool to_spaces = false) {
    string normalized_str = str;