Here is a brief summary of some recently introduced functions.
Repeatedly evaluate the body of the expression so long as the first
element of the body tests true. Then return
expression is evaluated only for its side effects.)
(let ((foo 2)) (while (> foo 0) (insert (format "foo is %d.\n" foo)) (setq foo (1- foo)))) ⇒ foo is 2. foo is 1. nil
insert function inserts its arguments at point; the
format function returns a string formatted from its arguments
message formats its arguments;
\n produces a new
Search for a pattern, and if the pattern is found, move point to rest just after it.
Takes four arguments, like
nilor an error message.
Bind some variables locally to particular values, and then evaluate the remaining arguments, returning the value of the last one. While binding the local variables, use the local values of variables bound earlier, if any.
(let* ((foo 7) (bar (* 3 foo))) (message "`bar' is %d." bar)) ⇒ `bar' is 21.
Return the position of the start of the text found by the last regular expression search.
t for true if the text after point matches the argument,
which should be a regular expression.
t for true if point is at the end of the accessible part
of a buffer. The end of the accessible part is the end of the buffer
if the buffer is not narrowed; it is the end of the narrowed part if
the buffer is narrowed.