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There are 2,572 functions in this library.

IsControlChar ( f_Char )

Tests if a character is an ASCII control character

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Neal Elward - Show more from this author Extreme Reach

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Let ( c_Code = Code ( f_Char ) ; Case ( c_Code = 0 ; 1 ; c_Code = 1 ; 1 ; c_Code = 2 ; 1 ; c_Code = 3 ; 1 ; c_Code = 4 ; 1 ; c_Code = 5 ; 1 ; c_Code = 6 ; 1 ; c_Code = 7 ; 1 ; c_Code = 8 ; 1 ; c_Code = 11 ; 1 ; c_Code = 12 ; 1 ; c_Code = 14 ; 1 ; c_Code = 15 ; 1 ; c_Code = 16 ; 1 ; c_Code = 17 ; 1 ; c_Code = 18 ; 1 ; c_Code = 19 ; 1 ; c_Code = 20 ; 1 ; c_Code = 21 ; 1 ; c_Code = 22 ; 1 ; c_Code = 23 ; 1 ; c_Code = 24 ; 1 ; c_Code = 25 ; 1 ; c_Code = 26 ; 1 ; c_Code = 27 ; 1 ; c_Code = 28 ; 1 ; c_Code = 29 ; 1 ; c_Code = 30 ; 1 ; c_Code = 31 ; 1 ; c_Code = 127 ; 1 ; 0 ) ) Click to copy

This function will check if the passed character appears to be an ASCII control character. Control characters typically end up in FileMaker fields mistakenly, and can cause problems with XML exports (particularly if there is an XSL transformation).

A good way to use this function is to call it from another function that recurses through a string.

 

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