#;5> sub ; <TAB> here
Error: (substring=?) out of range
3
0
3

	Call history:

	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	
	utf8-srfi-13.scm:374: proc	  	<--