diff options
Diffstat (limited to 'src/boot/strap/utility.clisp')
| -rw-r--r-- | src/boot/strap/utility.clisp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/boot/strap/utility.clisp b/src/boot/strap/utility.clisp index 02f52e9f..7bfc9387 100644 --- a/src/boot/strap/utility.clisp +++ b/src/boot/strap/utility.clisp @@ -302,3 +302,14 @@ ((OR (CHARACTERP |x|) (INTEGERP |x|)) (|removeScalar| |l| |x|)) (T (|removeValue| |l| |x|)))) +(DEFUN |charPosition| (|c| |s| |k|) + (PROG (|n|) + (RETURN + (PROGN + (SETQ |n| (LENGTH |s|)) + (LOOP + (COND + ((NOT (< |k| |n|)) (RETURN NIL)) + ((CHAR= (SCHAR |s| |k|) |c|) (RETURN |k|)) + (T (SETQ |k| (+ |k| 1))))))))) + |