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tweaks: do not needlessly renumber the lines in the buffer 

For cuts, pastes, and inserts, the lines have already been renumbered;
for indents, comments, and replacements, the line numbers cannot have
changed.  (And anyway, variable 'f' is not set for those cases.)

Only when lines get split (ENTER) or fused together (JOIN) do the later
lines need to be renumbered.  This mirrors what is done for do_redo().
master
Benno Schulenberg 2018-03-03 21:23:02 +01:00
parent f9103a5cb5
commit 9bf57e5ca0
1 changed files with 2 additions and 5 deletions
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7
src/text.c
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@ -732,7 +732,6 @@ void do_undo(void)
while (openfile->current_undo->type != SPLIT_BEGIN)
do_undo();
u = openfile->current_undo;
f = openfile->current;
case SPLIT_BEGIN:
undidmsg = _("text add");
break;
@ -753,18 +752,17 @@ void do_undo(void)
free(f->data);
f->data = data;
splice_node(f, t);
renumber(t);
goto_line_posx(u->lineno, u->begin);
break;
case CUT_TO_EOF:
case CUT:
undidmsg = _("text cut");
undo_cut(u);
f = fsfromline(u->lineno);
break;
case PASTE:
undidmsg = _("text uncut");
undo_paste(u);
f = fsfromline(u->mark_begin_lineno);
break;
case ENTER:
if (f->next == NULL) {
@ -778,6 +776,7 @@ void do_undo(void)
strlen(&u->strdata[from_x]) + 1);
strcat(f->data, &u->strdata[from_x]);
unlink_node(f->next);
renumber(f);
goto_line_posx(u->lineno, to_x);
break;
case INDENT:
@ -829,8 +828,6 @@ void do_undo(void)
if (undidmsg && !pletion_line)
statusline(HUSH, _("Undid action (%s)"), undidmsg);
renumber(f);
openfile->current_undo = openfile->current_undo->next;
openfile->last_action = OTHER;
openfile->mark = NULL;