Ordinal comparison sorts non-alphanumeric chars (like underscore etc) differently than expected (i.e compared to filesystem sorting etc).
InvariantCulture comparison corrects this, without imposing cultural differences. (A possible alternative would be CurrentCulture comparison.)
The earlier code, when comparing a single digit-char against non-digit-char, used char.CompareTo() where the comparison method can not be specified.
To fix this, we now use the same Comparer for all non-all-digits string comparisons.
* Refactor the 2 do-loops into simpler while-loops and replace the use of "tmp1/2" char-arrays with calls to String.Substring().
* Rename the "loc1/2" variables to "subLen1/2", for clarity, since they represent the lengths of the two extracted Substrings.
These changes make the logic more compact and easier to follow.
- `ToUpper` is not necessary to compare digit char with non-digit char
- use numeric sorting for commit decorators with same type
Signed-off-by: leo <longshuang@msn.cn>
