TSE: Issue: StrFind() ignores the 'i'gnore search option

[knud van eeden]

Hello,

PROC Main()

  STRING s[255] = "f:\4dos"

  Warn( StrFind( "^[a-z]:", s, "x" ) ) // gives 1 as expected

  Warn( StrFind( "^[A-Z]:", s, "ix" ) ) // gives 0 and that is not expected, because of the 'i' (=ignore case) in the search options

 END

Tested and in all the same incorrect result in:

1. TSE for Microsoft Windows version 4.50.RC24

2. TSE for Microsoft Windows version 4.50.13 clean

3. TSE for Linux WSL Ubuntu version 4.50.13 clean

4. TSE for Linux non-WSL Ubuntu version 4.50.13 clean

with friendly greetings

Knud van Eeden

[S.E. Mitchell]

This one is somewhat non-obvious.
In essence, the ignore-case option only applies to string literals.
The code does not parse character classes in respect to the ignore-case option.
It might be pretty hard to implement. You'd not only have to take A-Z
into account but hex, octal and decimal constants that can also be
used in character classes.