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S9 LIB (string-last-position string1 string2) ==> integer | #f
(string-ci-last-position string1 string2) ==> integer | #f
(string-last-word-position string1 string2) ==> integer | #f
(string-ci-last-word-position string1 string2) ==> integer | #f
(load-from-library "string-last-position.scm")
Find the last occurrence of a small string STRING1 in a large
string STRING2. Return the position of the rightmost substring of
STRING2 beginning with STRING1. When STRING2 does not contain
STRING1, return #F. STRING-CI-LAST-POSITION performs the same
function, but ignores case.
STRING-LAST-WORD-POSITION (STRING-CI-LAST-WORD-POSITION) differs from
STRING-LAST-POSITION (STRING-CI-LAST-POSITION) in that is matches only
full words, where a full word is a subsequence of characters that
is delimited on both sides by one of the following:
- the beginning of the string;
- the end of the string;
- a non-alphabetic character.
(string-last-position "a" "aaaaa") ==> 4
(string-ci-last-position "A" "ab ac") ==> 3
(string-last-position "ax" "ab ac") ==> #f
(string-last-word-position "a" "ab a c") ==> 3
(string-last-word-position "a" "ab ac") ==> #f
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