public boolean chIsIn(final char... chars) {
        for (char c : chars) {
            if (ch == c) {
                return true;
            }
        }
        return false;
    }
Parses text until a 'stopper' char is reached. Places pos after this stopper char and returns parsed text.
Returns null if no stopper char is found

@param stopper               chars to stop parsing at
@param endIsDelim            if true, then 'end-of-expression' is treated like finding a stopper char
@param escapeChar            if not null, then characters escapced with this char will not be considered stopper chars but parsed as literal char
@param escapeDoubledStoppers if true, then doubled up stopper chars will not be considered stoppers but parsed as single literal chars
main/src/main/java/cgeo/geocaching/utils/TextParser.java