Closed
Description
I noticed that the ProgressBar class uses the following to make sure the previous status is completely overwritten. However for me on a Mac with iTerm2/zsh it doesn't seem to work.
if (null !== $this->lastMessagesLength) {
foreach ($lines as $i => $line) {
if ($this->lastMessagesLength > Helper::strlenWithoutDecoration($this->output->getFormatter(), $line)) {
$lines[$i] = str_pad($line, $this->lastMessagesLength, "\x20", STR_PAD_RIGHT);
}
}
}However if I use the \033[2K ANSI escape sequence then it seems to work better:
if ($this->overwrite) {
// move back to the beginning of the progress bar before redrawing it
$this->output->write("\x0D"); // move back
$this->output->write("\033[2K"); // clear
} elseif ($this->step > 0) {
// move to new line
$this->output->writeln('');
}
if ($this->formatLineCount) {
$this->output->write(str_repeat("\033[1A\033[2K", $this->formatLineCount)); // move up and clear
}Is there a reason why Symfony doesn't use the escape code. I thought perhaps it doesn't work on Windows, but then neither should \x0D or all the other escape sequences Symfony uses.