@EXECSTR has trouble with Unicode when n < 0

[Charles Dye]

@EXECSTR doesn't appear to recognize UTF-16 output when n < 0 and //UnicodeOutput=No :

C:\>ver /r

TCC  30.00.22 x64   Windows 10 [Version 10.0.19044.3324]
TCC Build 22   Windows 10 Build 19044
Registered to COE-LN00074120

C:\>type test1.btm
@echo off
for /l %i in ( -10, 1, 10 ) echo %i - %@execstr[%i,babble.exe]

C:\>option //unicodeoutput=yes

C:\>test1.btm
-10 - ABCDE αβγδε АБВГД אבגדה
-9 - ABCDE αβγδε АБВГД אבגדה
-8 - ABCDE αβγδε АБВГД אבגדה
-7 - ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
-6 - ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ αβγδεζηθικλμνξοπρςστυφχψω
-5 - АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ абвгдежзийклмнопрстуфхцчшщъыьэюя
-4 - אבגדהוזחטיךכלםמןנסעףפץצקרשת
-3 - ابةتثجحخدذرزسشصضطظعغ
-2 - ᚠᚡᚢᚣᚤᚥᚦᚧᚨᚩᚪᚫᚬᚭᚮᚯᚰᚱᚲᚳᚴᚵᚶᚷᚸᚹᚺᚻᚼᚽᚾᚿᛀᛁᛂᛃᛄᛅᛆᛇᛈᛉᛊᛋᛌᛍᛎᛏᛐᛑᛒᛓᛔᛕᛖᛗᛘᛙᛚᛛᛜᛝᛞᛟᛠᛡᛢᛣᛤᛥᛦᛧᛨᛩᛪ
-1 -    
0 - ABCDE αβγδε АБВГД אבגדה
1 - ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
2 - ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ αβγδεζηθικλμνξοπρςστυφχψω
3 - АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ абвгдежзийклмнопрстуфхцчшщъыьэюя
4 - אבגדהוזחטיךכלםמןנסעףפץצקרשת
5 - ابةتثجحخدذرزسشصضطظعغ
6 - ᚠᚡᚢᚣᚤᚥᚦᚧᚨᚩᚪᚫᚬᚭᚮᚯᚰᚱᚲᚳᚴᚵᚶᚷᚸᚹᚺᚻᚼᚽᚾᚿᛀᛁᛂᛃᛄᛅᛆᛇᛈᛉᛊᛋᛌᛍᛎᛏᛐᛑᛒᛓᛔᛕᛖᛗᛘᛙᛚᛛᛜᛝᛞᛟᛠᛡᛢᛣᛤᛥᛦᛧᛨᛩᛪ
7 -    
8 -
9 -
10 -

C:\>option //unicodeoutput=no

C:\>test1.btm
-10 - A
-9 - A
-8 -
-7 -
-6 -
-5 -
-4 -
-3 -
-2 -
-1 -
0 - ABCDE αβγδε АБВГД אבגדה
1 - ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
2 - ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ αβγδεζηθικλμνξοπρςστυφχψω
3 - АБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ абвгдежзийклмнопрстуфхцчшщъыьэюя
4 - אבגדהוזחטיךכלםמןנסעףפץצקרשת
5 - ابةتثجحخدذرزسشصضطظعغ
6 - ᚠᚡᚢᚣᚤᚥᚦᚧᚨᚩᚪᚫᚬᚭᚮᚯᚰᚱᚲᚳᚴᚵᚶᚷᚸᚹᚺᚻᚼᚽᚾᚿᛀᛁᛂᛃᛄᛅᛆᛇᛈᛉᛊᛋᛌᛍᛎᛏᛐᛑᛒᛓᛔᛕᛖᛗᛘᛙᛚᛛᛜᛝᛞᛟᛠᛡᛢᛣᛤᛥᛦᛧᛨᛩᛪ
7 -    
8 -
9 -
10 -

C:\>