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This is the {{str letter}} meta-template.

It takes a string as parameter, and returns its length of preceding letters.

If the parameter is empty or undefined it is considered to be of zero length:

{{str letter}} returns 0

{{str letter|}} returns 0

{{str letter| }} returns 0

The count is interrupted by numbers, symbols, and punctuation:

{{str letter|12345}} returns 0

{{str letter|12345abc}} returns 0

{{str letter|abcdef?}} returns 6

{{str letter|abc def}} returns 3

{{str letter|ABcD123}} returns 4

{{str letter|abc, def}} returns 3

{{str letter|abc(def)}} returns 3

{{str letter|abc xyzabcdefghijklmnopqrstuvwxyz}} returns 3

{{str letter|ÁbČĐÈęFğ}} returns 8

{{str letter|NR<ref>a reference</ref>}} returns 2

{{str letter|abcdefghijklmnopqrstuvwx}} returns 24

{{str letter|abcdefghijklmnopqrstuvwxyz}} returns 26