strdelete two work the other does not?

[DMS500Tech]

Same Scipt, 3 senerios, The first 2 work perfect everytime but the 3rd (searching for a "1")will not work. The first searches for "/" 2nd for "2" and they loop like they are suppose to. The third searches for a "1" and finds the first occurance then stops. I don't get it!

PROC MAIN
string FileName
integer position
FileName = "1/2/1/2/1/26/17"
position = 1
while (Position !=0)
strfind FileName "/" Position
if failure
Position = 0
else
strdelete FileName Position 1
endif
endwhile
usermsg FileName
endproc

PROC MAIN
string FileName
integer position
FileName = "1/2/1/2/1/26/17"
position = 1
while (Position !=0)
strfind FileName "2" Position
if failure
Position = 0
else
strdelete FileName Position 1
endif
endwhile
usermsg FileName
endproc

PROC MAIN
string FileName
integer position
FileName = "1/2/1/2/1/26/17"
position = 1
while (Position !=0)
strfind FileName "1" Position
if failure
Position = 0
else
strdelete FileName Position 1
endif
endwhile
usermsg FileName
endproc

 

[DMS500Tech]

Okay, I just tried a senerio that I had not tried earlier.
it is the first character that it the probelem. If the test string starts with a 1 and you search for a 1 it removes the first then stops. If the first character is changed to soemthing else it then loops correctly. same with the other 2 search character. If it is the first character in the string it removes the first then stops looping. If it is not the first character it loops correctly.
Is there a work around for this?
I really don't see why this is an issue unless it is because the characters shift left after the first loop. Can someone explain this to me.

 

[kodr]

Try this:

PROC MAIN
string FileName
integer position
FileName = "1/2/1/2/1/26/17"
position = 1
while (Position !=-1)
   strfind FileName "1" Position
   if failure
      Position = -1
   else
      strdelete FileName Position 1
   endif
endwhile
usermsg FileName
endproc

I think the problem was the '1' in the third example was in Position 0, and you were using that value as an escape from the while. By using -1, it is imposible to accidently escape if the first character is what you're looking for.

 

[DMS500Tech]

That did the trick. Thanks so much.