diff options
| -rw-r--r-- | lib.c | 2 | ||||
| -rw-r--r-- | txr.1 | 18 |
2 files changed, 15 insertions, 5 deletions
@@ -1438,6 +1438,8 @@ val replace_list(val list, val items, val from, val to) self, nao); while (iter && seq_peek(&item_iter, &item) && seq_peek(&wh_iter, &wh)) { + if (minusp(wh)) + wh = plus(wh, len ? len : (len = length(list))); if (lt(wh, idx)) { seq_geti(&wh_iter); seq_geti(&item_iter); @@ -27017,6 +27017,11 @@ and .meta index-list are of different lengths, then the shorter of the two determines the maximum number of elements which are overwritten. +Whenever a negative value occurs in +.meta index-list +the length of +.meta sequence +is added to that value. Furthermore, similar restrictions apply on .meta index-list as under the @@ -27030,7 +27035,8 @@ furthermore, if is a list, then .meta index-list must -be monotonically increasing. +be monotonically increasing, after consideration of the +displacement of negative values. If .meta sequence @@ -27067,11 +27073,13 @@ arguments are converted to single range object, whereas an .meta index-list is passed as-is. -It is an error if a -.code to -argument is given, and +It is an error if the .code from -is a list; the situation is diagnosed. If either +argument is a sequence, indicating an +.metn index-list , +and a +.code to +argument is also given; the situation is diagnosed. If either .code from or .code to |