Position

Position returns the position of the first occurrence of find in aString. 

If aString does not contain find, it returns a zero (0).   

If Position locates an occurrence of find, it returns the position of the first character of the occurrence in aString.

If you ask for the position of an empty string within an empty string, Position returns zero (0). 

By default, the search begins at the first character of aString. The start parameter can be used to specify the character where the search will begin in aString. 

The lengthFound parameter, returns the length of the string actually found by the search. This parameter is necessary to be able to correctly manage letters that can be written using one or more characters (e.g.: æ and ae, ß and ss, etc.).
If the * parameter is passed (see below), these letters are not considered as equivalent (æ # ae); in this mode, lengthFound is always equal to the length of find (if an occurrence is found). 

By default, the command makes global comparisons that take linguistic particularities and letters that may be written with one or more characters (for example æ = ae) into account. On the other hand, it is not diacritical (a=A, a=à and so on) and does not take "ignorable" characters into account (Unicode specification). Ignorable characters include all characters in unicode C0 Control subset (U+0000 to U+001F, ascii character control set) except printable ones (U+0009 TAB, U+0010 LF, U+0011 VT, U+0012 FF and U+0013 CR). 

To modify this functioning, you can pass: 

• (first syntax - * parameter) the asterisk * as the last parameter. In this case, comparisons will be based on character codes. You must pass the * parameter:
  • If you want to take special characters into account, used for example as delimiters (Char(1), etc.),
  • If the evaluation of characters must be case sensitive and take accented characters into account (a#A, a#à and so on).
    Note that in this mode, the evaluation does not handle variations in the way words are written.
    
    Note: In certain cases, using the * parameter can significantly accelerate the execution of the command. 
    
    
• (second syntax - options parameter) one or a combination of the following constants from the Strings theme:
  
  

  Constant	Value	Comment
  sk case insensitive	2	Strings are compared according to the current data language with no consideration of capitalization differences. Note that diacritical marks are taken into consideration. For example, "A" is considered the same as "a", however "a" is not considered the same as "à" .    Can be combined with:  sk char codes sk diacritic insensitive sk kana insensitive sk strict sk whole word (Position command only)
  sk char codes	1	Strings are compared according to character codes. Current data language settings are not taken into account during the comparison.    Can be combined with: sk case insensitive  Only for "a-z" or "A-Z" ranges. (e.g., Alpha = alpha, but Alpha # âlphà)
  sk diacritic insensitive	4	Strings are compared according to the current data language, however the diacritical mark (e.g., accent or symbol) of letters is ignored. For example, "a" is considered the same as "à".    Can be combined with: sk case insensitive sk kana insensitive sk strict sk width insensitive sk whole word (Position command only)
  sk kana insensitive	8	For Japanese language. Strings are compared according to the meaning (not the writing style) in the current data language. For example, "あ" is considered the same as "ア".  When this option is set, sk width insensitive is implicit (considered set), however, the opposite is not true.   Can be combined with: sk case insensitive sk diacritic insensitive sk strict sk width insensitive
  sk strict	0	Strings are compared for exact matches according to the current data language. In most cases, capitalization and diacritical marks of letters are taken into account during the comparison.    Can be combined with: sk case insensitive sk diacritic insensitive sk kana insensitive sk width insensitive
  sk whole word	32	Strings are compared according to the current data language. Only strings that are complete words are considered. Matching strings within other strings are not considered. For example, "where" is not considered when found within "somewhere".   Can be combined with:  sk case insensitive (Position command only) sk diacritic insensitive (Position command only)
  sk width insensitive	16	For Japanese language. Strings are compared by character width according to the current data language. For example, "ｱ" is considered the same as "ア".    Can be combined with: sk case insensitive sk diacritic insensitive sk kana insensitive sk strict

  
  
  

For information about defining the data language, see the Text comparison section in the Design Reference.

Warning: You cannot use the @ wildcard character with Position. For example, if you pass "abc@" in find, the command will actually look for "abc@" and not for "abc" plus any character.

This example illustrates the use of Position. The results, described in the comments, are assigned to the variable vlResult.

In the following example, the lengthFound parameter can be used to search for all the occurrences of "aegis" in a text, regardless of how it is written:

In the following example, you want to find all instances of a string and replace it: