quote:

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is 0 length string same as if it contains null?
NOT.

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quote:

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Are you saying that if a string doesn't exist in the other string, we should assign that a negative value as well?

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Well, not exactly, if Lonkero permits me to take the service ...

Of course if a string is simply not present in another string, no use to return another value than zero, as the documentation states.
But, the problem in our case is that we can't really prevent some people (and me, Oh God For One ! I was ) to hammering the null string is present in every string and HowEver not to be satisfied at all with a return value of 1 as it actually is.

The special case of the empty string :

It is PRESENT, but DIFFERENT FROM EACH (every ?) CHARACTER in the string ... Sure you Follow me ...

So :

Present => return value <> 0 (>0 accordin' to the doc.)
Diff. From Each Character => return value = 0

That's why a returned value < 0 wouldn't have been illogical to my mind.

But, although I initiated the topic in that way, I would now perfectly agree with the fact, that it wouldn't be very efficient and certainly would have a malicious effect in some existing code ...

'Hope to be boring ...

quote:

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kix, as it's script-language, can determine pretty much what strings contain

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quote:

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and if you try to add to the end of string manually the null character what happens?
cause that's allowed in c...

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code:

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printf("String length is %d\n",strlen("\0\0\0\0\0"));

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code:

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KIX32.EXE (204800 bytes)

Is a DOS executable
  Size of header.....: 00000040h / 64 bytes
  File size in header: 00000490h / 1168 bytes
  Entrypoint.........: 00000040h / 64
  Overlay size.......: 00031B70h / 203632
  No relocation entries

PE EXE at offset 256/00000100h
  Entrypoint:              0001BDC8h / 114120 (RVA: 0001BDC8h) (.text)
  Calculated PE EXE size:  00032000h / 204800
  Calculated overlay size: 00000000h / 0
  Image base:              00400000h
  Required CPU type:       80386
  Required OS:             4.00 - Win 95 or NT 4
  Subsystem:               Console
  Linker version:          6.00
  Flags:
    Relocation info stripped from file
    File is executable
    Line numbers stripped from file
    Local symbols stripped from file
    Machine based on 32-bit-word architecture
  Stack reserve: 00100000h / 1048576
  Stack commit:  00001000h / 4096
  Heap reserve:  00100000h / 1048576
  Heap commit:   00001000h / 4096

Sections according to section table (section align = 00001000h):
  Name      Virt size     RVA     Phys size  Phys offs
  .text     00023914h  00001000h  00024000h  00001000h
  .rdata    0000264Eh  00025000h  00003000h  00025000h
  .data     0001B6D4h  00028000h  00009000h  00028000h
  .rsrc     000003F0h  00044000h  00001000h  00031000h

Listing of all used data directory entries (used: 3, total: 16):
           Import Table - offset: 000261FCh - RVA: 000261FCh (.rdata)
        Ressource Table - offset: 00031000h - RVA: 00044000h (.rsrc)
   Import Address Table - offset: 00025000h - RVA: 00025000h (.rdata)

Resources at offset 00031000h (RVA 00044000h):
  Version:
     ID: 0x00000001h RVA: 0x00044060h; Offset: 0x0003105Fh; Size: 908 bytes
VersionInfo resource:
  Fileversion:    4.02.00 (0)
  Productversion: 4.02.00 (63)
  Target OS:      32 bit Windows running with MS-DOS

  Total resource size: 996 bytes (ressources: 908 bytes, table: 88 bytes)

Processed with:
  Found compiler 'Visual C++ 5.0 ?'
  Seems to be compiled by MS Visual C++ 6.0

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However, since the KiXtart 2001 manual already tells us, I guess I did not need to trace the file type.

From page 111 of the 2001 manual you have.

About KiXtart
KiXtart 2001 is a spare time project of Ruud van Velsen of Microsoft Netherlands.

KiXtart was developed on Windows XP using Microsoft Visual Studio, Microsoft Visual C 6.0 SP4, Microsoft Assembler 6.1 and the Windows 32 Software Development Kit.

The SPK format used by the PLAY command was originally designed by Gordon E. Peterson II. The SPK files were translated from BASIC and Assembler programs gathered from various public domain sources

quote:

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For example:
INSTR("abc","A") = INSTR("abc","") = 1 should NOT be true.

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