===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/arguments.c,v
retrieving revision 1.28
retrieving revision 1.29
diff -c -r1.28 -r1.29
*** src/usr.bin/tmux/arguments.c	2020/03/17 16:02:38	1.28
--- src/usr.bin/tmux/arguments.c	2020/03/21 13:16:15	1.29
***************
*** 1,4 ****
! /* $OpenBSD: arguments.c,v 1.28 2020/03/17 16:02:38 nicm Exp $ */
  
  /*
   * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: arguments.c,v 1.29 2020/03/21 13:16:15 nicm Exp $ */
  
  /*
   * Copyright (c) 2010 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 339,344 ****
--- 339,394 ----
  	if (errstr != NULL) {
  		*cause = xstrdup(errstr);
  		return (0);
+ 	}
+ 
+ 	*cause = NULL;
+ 	return (ll);
+ }
+ 
+ /* Convert an argument to a number which may be a percentage. */
+ long long
+ args_percentage(struct args *args, u_char ch, long long minval,
+     long long maxval, long long curval, char **cause)
+ {
+ 	const char		*errstr;
+ 	long long 	 	 ll;
+ 	struct args_entry	*entry;
+ 	struct args_value	*value;
+ 	size_t			 valuelen;
+ 	char			*copy;
+ 
+ 	if ((entry = args_find(args, ch)) == NULL) {
+ 		*cause = xstrdup("missing");
+ 		return (0);
+ 	}
+ 	value = TAILQ_LAST(&entry->values, args_values);
+ 	valuelen = strlen(value->value);
+ 
+ 	if (value->value[valuelen - 1] == '%') {
+ 		copy = xstrdup(value->value);
+ 		copy[valuelen - 1] = '\0';
+ 
+ 		ll = strtonum(copy, 0, 100, &errstr);
+ 		free(copy);
+ 		if (errstr != NULL) {
+ 			*cause = xstrdup(errstr);
+ 			return (0);
+ 		}
+ 		ll = (curval * ll) / 100;
+ 		if (ll < minval) {
+ 			*cause = xstrdup("too large");
+ 			return (0);
+ 		}
+ 		if (ll > maxval) {
+ 			*cause = xstrdup("too small");
+ 			return (0);
+ 		}
+ 	} else {
+ 		ll = strtonum(value->value, minval, maxval, &errstr);
+ 		if (errstr != NULL) {
+ 			*cause = xstrdup(errstr);
+ 			return (0);
+ 		}
  	}
  
  	*cause = NULL;