private int skipIntegers(String formatString, int i) {
		char c = formatString.charAt(i);
		if (!Character.isDigit(c)) {
			if (isLengthModifier(c) || isConversionSpecifier(c)) {
				return i - 1;
			}
			return -1;
		}
		for (; Character.isDigit(formatString.charAt(i)); i++) {
			// Skip chars until a non-integer is found
		}
		return i - 1;
	}
Skips a series of numbers (field width or precision) within a format String.
returns the index of the format String at the last digit before another
non-digit character

@param formatString format String
@param i      index into formatStr
@return new index into formatString
Ghidra/Features/DecompilerDependent/src/main/java/ghidra/app/plugin/core/string/variadic/FormatStringParser.java