Had some trouble writing missionscripts with a calculator and discovered some
errors in the SDK docs for the RPN string operations. “scmi” is not case
sensitive. “sstr” is case sensitive and backwards (both description and
example). “schr” I’m not sure about, because it’s not returning what I’m
expecting it to based on description. Either the docs are incorrect or this is
different behaviour for mission script xml. Location:
https://docs.flightsimulator.com/html/Additional_Information/Reverse_Polish_Notation.htm
Expression operators - String operators The RPN code in the examples here is
taken from my testcript, so the comment at the end of the line has the
returned value seen in the behaviour window in the sim. schr - Should
find specific symbol in a string. Don’t seem to be working as described, not
sure why?
'abcd' 'b' schr (>L:wTEST_stringSCHR21)
'abcd' 'r' schr (>L:wTEST_stringSCHR22)
'b' 'abcd' schr (>L:wTEST_stringSCHR23)
'r' 'abcd' schr (>L:wTEST_stringSCHR24)
scmi - (Compares two strings) Is NOT case sensitive, otherwise correct.
Match:
'left' 'Left' scmi 0 == if{ 1 } els{ 0 } (>L:wTEST_stringSCMI1)
'left' 'left' scmi 0 == if{ 2 } els{ 0 } (>L:wTEST_stringSCMI2)
No match:
'left' 'right' scmi 0 == if{ 3 } els{ 0 } (>L:wTEST_stringSCMI3)
sstr - Finds the position of substring B in A, not A in B (description
and example backwards) and IS case sensitive Example says this should return
2, but it returns -1:
'cx' 'abcxyz' sstr
Reversing A and B works:
'abcxyz' 'cx' sstr (>L:wTEST_stringSSTR4)
'abcxyz' 'yz' sstr (>L:wTEST_stringSSTR5)
'abcxyz' 'ab' sstr (>L:wTEST_stringSSTR6)
'abcxyz' 'rt' sstr (>L:wTEST_stringSSTR7)
'rt' 'abcxyz' sstr (>L:wTEST_stringSSTR8)
