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undo: do not mark the buffer as modified when pasting back nothing 

This completes the fix for https://savannah.gnu.org/bugs/?57915.
This commit is contained in:
Benno Schulenberg 2020-02-28 13:21:57 +01:00
parent 0568f7a2b6
commit bd88b8b5a6
1 changed files with 4 additions and 1 deletions
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5
src/text.c
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@ -669,6 +669,7 @@ void do_redo(void)
{
linestruct *line = NULL, *intruder;
char *data, *redidmsg = NULL;
bool suppress_modification = FALSE;
undostruct *u = openfile->undotop;
if (u == NULL || u == openfile->current_undo) {
@ -764,6 +765,8 @@ void do_redo(void)
goto_line_posx(u->head_lineno, u->head_x);
if (u->cutbuffer)
copy_from_buffer(u->cutbuffer);
else
suppress_modification = TRUE;
free_lines(u->cutbuffer);
u->cutbuffer = NULL;
break;
@ -814,7 +817,7 @@ void do_redo(void)
if (openfile->current_undo == openfile->last_saved) {
openfile->modified = FALSE;
titlebar(NULL);
} else
} else if (!suppress_modification)
set_modified();
}
#endif /* !NANO_TINY */