Search for occurrence of character within a string without using the common lisp library?

Question

I need to extract certain information from buffer names, and I'm doing so by extracting substrings based on the position of unique characters within a buffer name string.

So, I currently am doing something like this:

(substring (buffer-name) (1+ (search "%" (buffer-name))) (search "&" (buffer-name)))

But when I do flycheck it complains: "function 'search' from cl pacakge called at runtime".

Is there a good method of search for the first occurrence of a character within a string that I can use that doesn't require calling (require 'cl-lib) [or (eval-when-compile (require 'cl-lib)), which produces the same complaint]? Or would I have to write the string out to a temporary buffer?

Answer 1

It looks like you ultimately want the characters between % and & in the buffer name?

You might do this:

(let ((s (buffer-name)))
  (string-match "%\\(.*?\\)&" s)
  (match-string 1 s))