diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | Src/Zle/zle_utils.c | 27 |
2 files changed, 22 insertions, 11 deletions
diff --git a/ChangeLog b/ChangeLog index 0fe5c3668..266e7f9ed 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2012-10-09 Peter Stephenson <pws@csr.com> + * users/17314: Src/Zle/zle_utils.c: ensure an undo change number + uniquely specifies a point in editing history by incrementing + the value returned by the variable. + * unposted: Src/builtin.c: fix trivial typo with "functions +T". 2012-10-07 Peter Stephenson <p.w.stephenson@ntlworld.com> @@ -248,5 +252,5 @@ ***************************************************** * This is used by the shell to define $ZSH_PATCHLEVEL -* $Revision: 1.5741 $ +* $Revision: 1.5742 $ ***************************************************** diff --git a/Src/Zle/zle_utils.c b/Src/Zle/zle_utils.c index cf6787f3a..55fd2ffd2 100644 --- a/Src/Zle/zle_utils.c +++ b/Src/Zle/zle_utils.c @@ -1520,23 +1520,25 @@ setlastline(void) int undo(char **args) { - zlong last_change = (zlong)0; + zlong last_change; if (*args) - { last_change = zstrtol(*args, NULL, 0); - } + else + last_change = (zlong)-1; handleundo(); do { - if(!curchange->prev) + struct change *prev = curchange->prev; + if(!prev) return 1; - if (unapplychange(curchange->prev)) - curchange = curchange->prev; + if (prev->changeno < last_change) + break; + if (unapplychange(prev)) + curchange = prev; else break; - } while (*args ? curchange->changeno != last_change : - (curchange->flags & CH_PREV)); + } while (last_change >= (zlong)0 || (curchange->flags & CH_PREV)); setlastline(); return 0; } @@ -1660,6 +1662,11 @@ zlecallhook(char *name, char *arg) zlong get_undo_current_change(UNUSED(Param pm)) { - return undo_changeno; + /* + * Increment the number in case a change is in progress; + * we don't want to back off what's already been done when + * we return to this change number. This eliminates any + * problem about the point where a change is numbered. + */ + return ++undo_changeno; } - |